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Version: v0.3.0

Python API Reference

connect​

infinity.connect(uri)

Connects to the local directory or the Infinity server, and gets an Infinity object.

NOTE

You must have an Infinity object ready to perform database-specific operations.

Parameters​

uri: Required​

The uri here can be either a local directory in str format or a NetworkAddress object:

  • "/path/to/save/to": str - A local directory storing the Infinity data. Used when Infinity is imported as a Python module.
  • NetworkAddress: Used in client-server mode, when you have deployed Infinity as a separate server and wish to connect to it remotely. A NetworkAddress object comprises two fields:
    • "<SERVER_IP_ADDRESS>": str - The IP address of the Infinity server.
    • <PORT>: int - The SDK port number on which the Infinity server listens. Defaults to 23817.
IMPORTANT

When connecting to Infinity in client-server mode, ensure that the client version exactly matches the server version. For example:

Client versionServer version
v0.1.0v0.1.0
v0.1.1v0.1.1
v0.2.0v0.2.0
v0.2.1v0.2.1
v0.3.0.dev6v0.3.0.dev6

If the versions do not match, please update your client or server to ensure compatibility.

In client-server mode, also ensure that your server version matches the version specified in your configuration file. Here, the matching rule is less strict than an exact match:

  • The major and minor versions must be identical.
  • The patch version may differ.

This allows for bug fixes without requiring changes to the configuration file.

Configuration versionCompatible server version
v0.1.0v0.1.0, v0.1.1
v0.2.0v0.2.0, v0.2.1

Returns​

  • Success: An infinity.local_infinity.infinity.LocalInfinityConnection object in Python module mode or an infinity.remote_thrift.infinity.RemoteThriftInfinityConnection object in client-server mode.
  • Failure: InfinityException
    • error_code: int - A non-zero value indicating a specific error condition.
    • error_msg: str - A message providing additional details about the error.

Examples​

Connect to the local directory of Infinity​

From v0.2.1 onwards, Infinity also gives you the option to connect to the Infinity service just like calling a Python module. If you have installed Infinity via pip install infinity-sdk==<v0.2.1_OR_HIGHER>, you can connect to Infinity and save all related data in a local directory:

import infinity
infinity_object = infinity.connect("/path/to/save/to")

Connect to Infinity in client-server mode​

If you have deployed Infinity as a separate server, connect to it via its IP address. If your Infinity is running on your local machine, you can also use infinity.common.LOCAL_HOST to replace "<SERVER_IP_ADDRESS>" in the following code snippet.

import infinity
# If Infinity is deployed on the local machine, use infinity.LOCAL_HOST to replace <SERVER_IP_ADDRESS>
infinity_object = infinity.connect(infinity.NetworkAddress("192.168.1.101", 23817))

disconnect​

infinity_object.disconnect()

Disconnects the client from the Infinity server in client-server mode, or destructs the Infinity object and releases all associated resources when Infinity is imported as a Python module.

Returns​

A structure containing the following attributes:

  • error_code: int
    • 0: The operation succeeds.
    • A non-zero value indicates a specific error condition.
  • error_msg: str
    When error_code is non-zero, error_msg provides additional details about the error.

Examples​

infinity_object.disconnect()

create_database​

infinity_object.create_database(db_name, conflict_type = ConflictType.Error)

Creates a database with a specified name.

Parameters​

db_name: str, Required​

A non-empty string indicating the name of the database, which must adhere to the following requirements:

  • Permitted characters include:
    • English letters (a-z, A-Z)
    • Digits (0-9)
    • "_" (underscore)
  • Must begin with an English letter or underscore.
  • Maximum 65,535 characters.
  • Case-insensitive.

conflict_type: ConflictType, Optional​

  • Error: Raise an error if a database with the same name exists.
  • Ignore: Ignore the database creation request and keep the existing database with the same name.
NOTE

You may want to import the infinity.common package to set ConflictType:

from infinity.common import ConflictType
NOTE

If ConflictType is not set, it defaults to Error.

Returns​

  • Success: An infinity.local_infinity.db.LocalDatabase object in Python module mode or an infinity.remote_thrift.db.RemoteDatabase object in client-server mode.
  • Failure: InfinityException
    • error_code: int - A non-zero value indicating a specific error condition.
    • error_msg: str - A message providing additional details about the error.

Examples​

# Create a database named 'my_database':
# If the specified database already exists, raise an error. 
infinity_object.create_database("my_database")
# Create a database named 'my_database':
# If the specified database already exists, raise an error (same as above). 
infinity_object.create_database("my_database", infinity.common.ConflictType.Error)
from infinity.common import ConflictType
# Create a database named 'my_database':
# If the specified database already exists, silently ignore the operation and proceed. 
infinity_object.create_database("my_database", ConflictType.Ignore)

drop_database​

infinity_object.drop_database(db_name, conflict_type = ConflictType.Error)

Deletes a database by its name.

Parameters​

db_name: str, Required​

A non-empty string indicating the name of the database to delete.

conflict_type: ConflictType, Optional​

  • Error: Raise an error if the specified database does not exist.
  • Ignore: Ignore the operation and proceed regardless, if the specified database does not exist.
NOTE

You may want to import the infinity.common package to set ConflictType:

from infinity.common import ConflictType
NOTE

If ConflictType is not set, it defaults to Error.

Returns​

A structure containing the following attributes:

  • error_code: int
    • 0: The operation succeeds.
    • A non-zero value indicates a specific error condition.
  • error_msg: str
    When error_code is non-zero, error_msg provides additional details about the error.

Examples​

# Delete a database named 'my_database':
# If the specified database does not exist, raise an error. 
infinity_object.drop_database("my_database")
# Delete a database named 'my_database':
# If the specified database does not exist, raise an error (same as above). 
infinity_object.drop_database("my_database", infinity.common.ConflictType.Error)
from infinity.common import ConflictType
# Delete a database named 'my_database':
# If the specified database does not exist, silently ignore the operation and proceed.
infinity_object.drop_database("my_database", ConflictType.Ignore)

list_databases​

Infinity.list_databases()

Retrieves a list of all available databases within the Infinity system.

Returns​

A structure containing the following attributes:

  • db_names: list[str] A list of strings indicating the names of all available databases.
  • error_code: int
    • 0: The operation succeeds.
    • A non-zero value indicates a specific error condition.
  • error_msg: str
    When error_code is non-zero, error_msg provides additional details about the error.

Examples​

res = infinity_object.list_databases() 
print(res.db_names) # ['my_database', 'database_1']

get_database​

Infinity.get_database(database_name)

Retrieves a database object by its name.

Parameters​

db_name: str, Required​

A non-empty string indicating the name of the database to retrieve.

Returns​

  • Success: An infinity.local_infinity.db.LocalDatabase object in Python module mode or an infinity.remote_thrift.db.RemoteDatabase object in client-server mode.
  • Failure: InfinityException
    • error_code: int - A non-zero value indicating a specific error condition.
    • error_msg: str - A message providing additional details about the error.

Examples​

db_object = infinity_object.get_database("my_database")

create_table​

db_object.create_table(table_name, columns_definition, conflict_type = ConflictType.Error)

Creates a table with a specified name and defined columns.

NOTE

Call create_database() or get_database() to get a database object for all table-specific operations.

Parameters​

table_name: str, Required​

A non-empty string indicating the name of the table, which must adhere to the following requirements:

  • Permitted characters include:
    • English letters (a-z, A-Z)
    • Digits (0-9)
    • "_" (underscore)
  • Must begin with an English letter or underscore.
  • Maximum 65,535 characters.
  • Case-insensitive.

columns_definition: dict[str, dict[str, Any]], Required​

Definitions for all table columns as a dictionary. Each key in the dictionary is a column name (str), with a corresponding 'value' dictionary defining the column's data type and default value information in key-value pairs:

  • Data type ("type")
    The data type of the column.
    • Numeric:
    • "int8"
    • "int16"
    • "int"/"int32"/"integer"
    • "int64"
    • "float"/"float32"
    • "double"/"float64"
    • "float16"
    • "bfloat16"
  • String: "varchar"
  • Dense vector: e.g., "vector,128,float"
    • vector: The column is a dense vector column.
    • The second item in the string: The dimension of the dense vector.
    • The third item in the string: The element type of the dense vector. Can be:
      • "int8"
      • "int16"
      • "int"/"int32"/"integer"
      • "int64"
      • "float"/"float32"
      • "double"/"float64"
      • "float16"
      • "bfloat16"
  • Sparse vector: e.g., "sparse,128,float,int"
    • sparse: The column is a sparse vector column.
    • The second item in the string: The dimension of the sparse vector.
    • The third item in the string: The element type of the sparse vector. Can be:
      • "int8"
      • "int16"
      • "int"/"int32"/"integer"
      • "int64"
      • "float"/"float32"
      • "double"/"float64"
      • "float16"
      • "bfloat16"
    • The fourth item in the string: The data type of the sparse vector indices. Can be:
      • int8
      • int16
      • int/int32/integer
      • int64
  • Tensor vector: e.g., "tensor,4,float"
    • tensor: The column is a tensor column.
    • The second item in the string: The dimension of each vector unit in the tensor.
    • The third item in the string: The element type of the tensors. Can be:
      • "int8"
      • "int16"
      • "int"/"int32"/"integer"
      • "int64"
      • "float"/"float32"
      • "double"/"float64"
      • "float16"
      • "bfloat16"
  • Tensor array: e.g., "tensorarray,6,float"
    • tensorarray: The column is a tensor-array column.
    • The second item in the string: The dimension of each vector unit in the tensor arrays.
    • The third item in the string: The element type of the tensors. Can be:
      • "int8"
      • "int16"
      • "int"/"int32"/"integer"
      • "int64"
      • "float"/"float32"
      • "double"/"float64"
      • "float16"
      • "bfloat16"
  • Multivector: e.g., "multivector,128,float"
    • multivector: The column is a multi-vector column.
    • The second item in the string: The dimension of each vector unit.
    • The third item in the string: The element type of the tensors. Can be:
      • "int8"
      • "int16"
      • "int"/"int32"/"integer"
      • "int64"
      • "float"/"float32"
      • "double"/"float64"
      • "float16"
      • "bfloat16"
  • Default value ("default")
    The default value for unspecified cells in that column.

conflict_type: ConflictType, Optional​

  • Error: Raise an error if a table with the same name exists.
  • Ignore: Ignore the table creation request and keep the existing table with the same name.
NOTE

You may want to import the infinity.common package to set ConflictType:

from infinity.common import ConflictType
NOTE

If ConflictType is not set, it defaults to Error.

Returns​

  • Success: An infinity.local_infinity.table.LocalTable object in Python module mode or an infinity.remote_infinity.table.RemoteTable object in client-server mode.
  • Failure: InfinityException:
    • error_code: int - A non-zero value indicating a specific error condition.
    • error_msg: str - A message providing additional details about the error.

Examples​

Create a table with an integer column only​

# The `create_table`method supports creating integer columns in the following data types:
# - int8
# - int16
# - int/int32/integer
# - int64
db_object.create_table("my_table", {"c1": {"type": "int", "default": 1}})

Create a table with a float column only​

# The `create_table`method supports creating float columns in the following data types:
# - float/float32
# - double/float64
# - float16
# - bfloat16
db_object.create_table("my_table", {"c1": {"type": "float64"}})

Create a table with a string column only​

db_object.create_table("my_table", {"c1": {"type": "varchar"}})

Create a table with a bool column only​

db_object.create_table("my_table", {"c1": {"type": "bool"}})

Create a table with a vector column only​

NOTE

You can build a HNSW index on the vector column to speed up the match_dense search.

# Create a table with a vector column only:  
# - `vector`: The column is a vector column
# - `128`: The vector dimension
# - `float`: The primitive data type of the vectors. Can be `float`/`float32`, `float16`, `bfloat16`, `uint8` or `int8`
db_object.create_table("my_table", {"c1": {"type": "vector,128,float"}}, None)

Create a table with a multi-vector column only​

NOTE

You can build an HNSW index on the multi-vector column to accelerate match_dense search.

# Create a table with a multi-vector column only:  
# - `multivector`: The column is a multi-vector column
# - `128`: The basic vector dimension
# - `float`: The primitive data type of the basic vectors. Can be `float`/`float32`, `float16`, `bfloat16`, `uint8` or `int8`
db_object.create_table("my_table", {"c1": {"type": "multivector,128,float"}}, None)

Create a table with a sparse vector column only​

NOTE

You can build a BMP index on the sparse vector column to speed up the match_sparse search.

from infinity.common import ConflictType
# Create a table with a vector column only:  
# - `sparse`: The column is a sparse vector column
# - `128`: The sparse vector dimension
# - `float`: The primitive data type of the sparse vectors. Can be `float`/`float32` or `double`/`float64`
# - `int`: The data type of the sparse vector indices. Can be `int8`, `int16`, `int`/`int32`/`integer`, or `int64`
db_object.create_table("my_table", {"c1": {"type": "sparse,128,float,int"}}, ConflictType.Error)

Create a table with a tensor column only​

from infinity.common import ConflictType
# Create a table with a tensor column only:  
# - `tensor`: The column is a tensor column
# - `4`: Dimension of each vector unit in the tensor
# - `float`: The primitive data type of the tensors. Can be `float`/`float32`, `float16`, `bfloat16` or `bit`
db_object.create_table("my_table", {"c1": {"type": "tensor,4,float"}}, ConflictType.Ignore)

Create a table with a tensor array column only​

from infinity.common import ConflictType
# Create a table with a tensor array column only:  
# - `tensorarray`: The column is a tensor array column
# - `6`: Dimension of each vector unit in the tensor arrays
# - `float`: The primitive data type of the tensor arrays. Can be `float`/`float32`, `float16`, `bfloat16` or `bit`
db_object.create_table("my_table", {"c1": {"type": "tensorarray,6,float"}}, ConflictType.Ignore)

drop_table​

db_object.drop_table(table_name, conflict_type = ConflictType.Error)

Deletes a table from the database by its name.

Parameters​

table_name: str, Required​

A non-empty string indicating the name of the table to delete.

conflict_type: ConflictType, Optional​

  • Error: Raise an error if the specified table does not exist.
  • Ignore: Ignore the operation and proceed regardless, if the specified table does not exist.
NOTE

You may want to import the infinity.common package to set ConflictType:

from infinity.common import ConflictType
NOTE

If ConflictType is not set, it defaults to Error.

Returns​

A structure containing the following attributes:

  • error_code: int
    • 0: The operation succeeds.
    • A non-zero value indicates a specific error condition.
  • error_msg: str
    When error_code is non-zero, error_msg provides additional details about the error.

Examples​

# Delete a table named 'my_table':
# If the specified table does not exist, raise an error. 
db_object.drop_table("my_table")
# Delete a table named 'my_table':
# If the specified table does not exist, raise an error (same as above). 
db_object.drop_table("my_table", infinity.common.ConflictType.Error)
from infinity.common import ConflictType
# Delete a table named 'my_table':
# If the specified table does not exist, silently ignore the operation and proceed.
db_object.drop_table("my_table", ConflictType.Ignore)

get_table​

db_object.get_table(table_name)

Retrieves a table object by its name.

Parameters​

table_name: str, Required​

A non-empty string indicating the name of the table to retrieve.

Returns​

  • Success: An infinity.local_infinity.table.LocalTable object in Python module mode or an infinity.remote_infinity.table.RemoteTable object in client-server mode.
  • Failure: InfinityException:
    • error_code: int - A non-zero value indicating a specific error condition.
    • error_msg: str - A message providing additional details about the error.

Examples​

table_object = db_object.get_table("my_table")

list_tables​

db_object.list_tables()

Retrieves a list of all available tables within the current database.

Returns​

A structure containing the following attributes:

  • error_code: int
    • 0: The operation succeeds.
    • A non-zero value indicates a specific error condition.
  • error_msg: str
    When error_code is non-zero, error_msg provides additional details about the error.
  • table_names: list[str] - A list of strings indicating the names of all available tables in the current database.

Examples​

res = db_object.list_tables()
res.table_names # ['my_table, 'tensor_table', 'sparse_table']

create_index​

table_object.create_index(index_name, index_info, conflict_type = ConflictType.Error)

Creates an index on a specified column.

NOTE

Call create_table() or get_table() to get a database object for all index-specific operations.

Parameters​

index_name: str Required​

A non-empty string indicating the name of the index, which must adhere to the following requirements:

  • Permitted characters include:
    • English letters (a-z, A-Z)
    • Digits (0-9)
    • "_" (underscore)
  • Must begin with an English letter or underscore.
  • Maximum 65,535 characters.
  • Case-insensitive.

index_info: IndexInfo(), Required​

An IndexInfo structure contains three fields,column_name, index_type, and index_param_list.

  • column_name: str, Required
    The name of the column to build index on. Must not be empty.
  • index_type: IndexType, Required
    Index type. You may want to import infinity.index to set IndexType: from infinity.index import IndexType
    • Hnsw: An HNSW index.
    • FullText: A full-text index.
    • Secondary: A secondary index. Works with structured data only.
    • BMP: A Block-Max Pruning index. Works with sparse vectors only.
  • index_param_list: dict[str, str]
    A dictionary specifying the parameter settings for the selected index type. Each key-value pair in the dictionary corresponds to a parameter and its value:
    • Parameter settings for an HNSW index:
      • "M": Optional - Defaults to"16".
      • "ef_construction": Optional - Defaults to"50".
      • "metric" Required - The distance metric to use in similarity search.
        • "ip": Inner product.
        • "l2": Euclidean distance.
        • "cosine": Cosine similarity.
      • "encode": Optional
        • "plain": (Default) Plain encoding.
        • "lvq": Locally-adaptive vector quantization. Works with float vector element only.
    • Parameter settings for a full-text index:
      • "ANALYZER": Optional
        • "standard": (Default) Standard analyzer, segmented by tokens, lowercase processing, provides stemming outputs.
        • "chinese": Simplified Chinese
        • "tradition": Traditional Chinese
        • "japanese": Japanese
        • "ngram": N-gram
    • Parameter settings for a secondary index:
      No parameters are required. For now, use an empty list [].
    • Parameter settings for a BMP index:
      • block_size: Optional - The size of the block in a BMP index. Range: "1" ~ "256". Defaults to "16".
      • "compress_type": Optional
        • "compress": (Default) Store the block-max index in sparse format. Works best with small block size situations.
        • "raw": Store the block-max index without compression.
NOTE

Import the infinity.index package to set IndexInfo, and IndexType.

from infinity.index import IndexInfo, IndexType

conflict_type: ConflictType, Optional​

  • Error: Raise an error if an index with the same name exists.
  • Ignore: Ignore the index creation request and keep the existing table with the same name.
NOTE

You may want to import the infinity.common package to set ConflictType:

from infinity.common import ConflictType
NOTE

If ConflictType is not set, it defaults to Error.

Returns​

A structure containing these attributes:

  • error_code: int
    • 0: The operation succeeds.
    • A non-zero value indicates a specific error condition.
  • error_msg: str
    When error_code is non-zero, error_msg provides additional details about the error.

Examples​

Create an HNSW index​

from infinity.index import IndexInfo, IndexType
# Create a table named "test_index_hnsw" with a 1024-dimensional float vector column "c1"
table_object = db_object.create_table("test_index_hnsw", {"c1": {"type": "vector,1024,float"}}, None)
# Create an HNSW index named "my_index" on column "c1" with default parameter settings:
# - "M": "16", 
# - "ef_construction": "50",
# - "encode": "plain"
# Only the "metric" parameter (required) is explicitly set to L2 distance. 
table_object.create_index("my_index",IndexInfo("c1", IndexType.Hnsw, {"metric": "l2"}), None)
from infinity.index import IndexInfo, IndexType
# Create a table named "test_index_hnsw" with a 1024-dimensional float vector column "c1"
table_object = db_object.create_table("test_index_hnsw", {"c1": {"type": "vector,1024,float"}}, None)
# Create an HNSW index named "my_index" on column "c1"
# Settings for "M", "ef_construction", and "metric" are the same as above, except:
# "encoding" is set to "lvq" 
table_object.create_index(
    "my_index",
        IndexInfo(
            "c1",
            IndexType.Hnsw,
            {
              "M": "16",
              "ef_construction": "50",
              "metric": "l2",
              "encode": "lvq"
            }
        ),
    None
)

Create a full-text index​

from infinity.index import IndexInfo, IndexType
# Create a table named "test_index_fulltext" with a varchar column "body"
table_object = db_object.create_table("test_index_fulltext", {"body": {"type": "varchar"}}, None)
# Create a full-text index named "my_index" on column "body" with default parameter settings:
# - "ANALYZER": "standard"
table_object.create_index(
    "my_index",
        IndexInfo(
            "body", 
            IndexType.FullText, 
        ),
    None
)
from infinity.index import IndexInfo, IndexType
# Create a table named "test_index_fulltext" with a varchar column "body"
table_object = db_object.create_table("test_index_fulltext", {"body": {"type": "varchar"}}, None)
# Create a full-text index named "my_index" on column "body"
# Setting "ANALYZER" to "standard" (same as the above)
table_object.create_index(
    "my_index",
        IndexInfo(
            "body", 
            IndexType.FullText, 
            {
                "ANALYZER": "standard"
            }
        ),
    None
)
from infinity.index import IndexInfo, IndexType
# In the following code snippet, you will see an index built on three columns
# IMPORTANT: For now, multi-column index works with full-text index ONLY. 
# Create a table named "test_index_fulltext" with three varchar columns "doctitle", "docdate", and "body"
table_object = db_object.create_table("test_index_fulltext", {"doctitle": {"type": "varchar"}, "docdate": {"type": "varchar"}, "body": {"type": "varchar"}}, None)
# Create a full-text index named "my_index" on three columns "doctitle", "docdate", and "body" with default parameter settings:
# - "ANALYZER": "standard"
table_object.create_index(
    "my_index",
    [
        IndexInfo("doctitle", IndexType.FullText),
        IndexInfo("docdate", IndexType.FullText),
        IndexInfo("body", IndexType.FullText),
    ],
    None
)

Create a secondary index​

from infinity.index import IndexInfo, IndexType
# Create a table named "test_index_secondary" with a varchar column "body"
table_object = db_object.create_table("test_index_secondary", {"c1": {"type": "varchar"}}, None)
# Create a secondary index named "my_index" on column "c1"
table_object.create_index(
    "my_index",
        IndexInfo(
            "c1", 
            IndexType.Secondary 
        ),
    None
)

Create a BMP index​

from infinity.index import IndexInfo, IndexType
# Create a table named "test_index_bmp" with a sparse vector column "c1"
table_object = db_object.create_table("test_index_bmp", {"c1": {"type": "sparse,30000,float,int16"}}, None)
# Create a BMP index named "my_index" on column "c1" with default parameter settings:
# - "block_size": "16"
# - "compress_type": "compress"
table_object.create_index(
    "my_index",
        IndexInfo(
            "c1",
            IndexType.BMP
        ),
    None
)
from infinity.index import IndexInfo, IndexType
# Create a table named "test_index_bmp" with a sparse vector column "c1"
table_object = db_object.create_table("test_index_bmp", {"c1": {"type": "sparse,30000,float,int16"}}, None)
# Create a BMP index named "my_index" on column "c1"
# Settings for "block_size" and "compress_type" are the same as above
table_object.create_index(
    "my_index",
        IndexInfo(
            "c1",
            IndexType.BMP,
            {
              "block_size": "16",
              "compress_type": "compress"
            }
        ),
    None
)

drop_index​

table_object.drop_index(index_name, conflict_type = ConflictType.Error)

Deletes an index by its name.

Parameters​

index_name: str, Required​

A non-empty string indicating the name of the index to delete.

conflict_type: ConflictType, Optional​

  • Error: Raise an error if an index with the specified name does not exist.
  • Ignore: Ignore the index creation request if the index does not exist.
NOTE

You may want to import the infinity.common package to set ConflictType:

from infinity.common import ConflictType
NOTE

If ConflictType is not set, it defaults to Error.

Returns​

A structure containing these attributes:

  • error_code: int
    • 0: The operation succeeds.
    • A non-zero value indicates a specific error condition.
  • error_msg: str
    When error_code is non-zero, error_msg provides additional details about the error.

Examples​

table_object.drop_index("my_index")

list_indexes​

table_object.list_indexes()

Retrieves a list of all available indexes built on the current table.

Returns​

A structure containing the following attributes:

  • error_code: int
    • 0: The operation succeeds.
    • A non-zero value indicates a specific error condition.
  • error_msg: str
    When error_code is non-zero, error_msg provides additional details about the error.
  • table_names: list[str] - A list of strings indicating the names of all available indexes.

Examples​

res = table_object.list_indexes()
res.index_names # ['my_index', 'tensor_index', 'sparse_index']

insert​

table_object.insert(data)

Inserts rows of data into the current table.

Parameters​

data: dict[str, Any], Required​

Data to insert. Infinity supports inserting multiple rows to a table at one time in the form of dict[str, Any] (one row) or list[dict[str, Any]] (multiple rows), with each key-value pair corresponding to a column name and a table cell value.

NOTE
  • When inserting incomplete rows of data, ensure that all uninserted columns have default values when calling create_table(). Otherwise, an error will occur.
  • You are not allowed to insert both complete and incomplete rows of data in one request. For information about setting default column values, see create_table().
NOTE

Batch row limit: 8,192. You are allowed to insert a maximum of 8,192 rows at once.

Returns​

A structure containing the following attributes:

  • error_code: int
    • 0: The operation succeeds.
    • A non-zero value indicates a specific error condition.
  • error_msg: str
    When error_code is non-zero, error_msg provides additional details about the error.

Examples​

Insert primitives​

# Create a table with four primitive columns:
table_instance = db_instance.create_table("primitive_table", {
    "c1": {"type": "int8", "default": 0},
    "c2": {"type": "int16", "default": 0},
    "c3": {"type": "int", "default": 0},
    "c4": {"type": "int32", "default": 0},   # Same as int
    "c5": {"type": "integer", "default": 0}, # Same as int
    "c6": {"type": "int64", "default": 0},
    "c7": {"type": "varchar"},
    "c8": {"type": "float", "default": 1.0},
    "c9": {"type": "float32", "default": 1.0}, # Same as float
    "c10": {"type": "double", "default": 1.0},
    "c11": {"type": "float64", "default": 1.0}, # Same as double
    "c12": {"type": "bool", "default": False},
})

# Insert an incomplete row, with remaining cells defaulting to their column defaults:
table_instance.insert({"c1": 1, "c7": "Tom", "c12": True})

Insert vectors​

# Create a table with a integer column and a 3-d vector column:
table_object = db_object.create_table("vector_table", {"c1": {"type": "integer", "default": 2024}, "vector_column": {"type": "vector,3,float"}})

# Insert one incomplete row into the table:
# Note that the 'c1' cell defaults to 0. 
table_object.insert({"vector_column": [1.1, 2.2, 3.3]})

# Insert two incomplete rows into the table:
# Note that the 'c1' cells default to 0. 
table_object.insert([{"vector_column": [1.1, 2.2, 3.3]}, {"vector_column": [4.4, 5.5, 6.6]}])

Insert sparse vectors​

from infinity.common import SparseVector
# Create a table with a integer column and a 100-d sparse vector column:
table_object = db_object.create_table("sparse_vector_table", {"c1": {"type": "integer"}, "sparse_column": {"type": "sparse,100,float,int"}})

# Insert one row into the table:
# `indices` specifies the correspoing indices to the values in `values`.
# Note that the second row sets "c1" as 2024 by default. 
table_object.insert([{"c1": 2022, "sparse_column": SparseVector([10, 20, 30], [1.1, 2.2, 3.3])}, {"sparse_column": SparseVector([70, 80, 90], [7.7, 8.8, 9.9])}])

Insert tensors​

# Create a table with a tensor column: 
table_object = db_object.create_table("tensor_table", {"c1": {"type": "integer", "default": 2024}, "tensor_column": {"type": "tensor,4,float"}})

# Insert one row into the table:
table_instance.insert([{"tensor_column": [[1.0, 0.0, 0.0, 0.0], [1.1, 0.0, 0.0, 0.0]]}])

Insert tensor arrays​

# Creat a table with only one tensor array column:
table_object = db_object.create_table("tensor_array_table", {"tensor_array_column": {"type": "tensorarray,2,float"}})
table_object.insert([{"tensor_array_column": [[[1.0, 2.0], [3.0, 4.0]], [[5.0, 6.0]]]}])

import_data​

table_object.import_data(filepath, import_options)

Imports data from a specified file into the current table.

Parameters​

file_path: str, Required​

Absolute path to the file for export.

import_options: dict[str, bool | str]​

Example: {"header":True, "delimiter": "\t", file_type}

  • header: bool
    Whether to display table header or not. Works with .csv files only:

    • True: Display table header.
    • False: (Default) Do not display table header.

  • delimiter: str, Optional, Defaults to ","
    Delimiter to separate columns. Works with .csv files only.

  • file_type: str, Required
    The type of the imported file. Supported file types include:

    • csv
    • json
    • jsonl

Returns​

A structure containing the following attributes:

  • error_code: int
    • 0: The operation succeeds.
    • A non-zero value indicates a specific error condition.
  • error_msg: str
    When error_code is non-zero, error_msg provides additional details about the error.

Examples​

Import a csv file​

table_object.import_data(os.getcwd() + "/your_file.csv", {"header": False, "file_type": "csv", "delimiter": "\t"})

Import a jsonl file​

table_object.import_data(os.getcwd() + "/your_file.jsonl", {"file_type": "jsonl"})

export_data​

table_object.export_data(filepath, export_options, columns = None)

Exports data in the current table to a specified file.

Parameters​

file_path: str, Required​

Absolute path to the file for export.

export_options: dict[str, Any], Required​

Example: {"header": False, "delimiter": "\t", "file_type": "jsonl", "offset": 2, "limit": 5}

  • header: bool, Optional
    Whether to display table header or not. Works with .csv files only:

    • True: Display table header.
    • False: (Default) Do not display table header.

  • delimiter: str, Optional, Defaults to ","
    Delimiter to separate columns. Works with .csv files only.

  • file_type: str, Required
    The type of the exported file. Supported file types include:

    • csv
    • jsonl

  • offset: int, Optional
    Index specifying the starting row for export. Usually used in conjunction with limit. If not specified, the file export starts from the first row.

  • limit: int, Optional
    The maximum number of rows to export. Usually used in conjunction with offset. If the table's row count exceeds offset + limit, the excess rows are excluded from the export.

  • row_limit: int, Optional
    Used when you have a large table and need to break the output file into multiple parts. This argument sets the row limit for each part. If you specify test_export_file.csv as the file name, the exported files will be named test_export_file.csv, test_export_file.csv.part1, test_export_file.csv.part2, and so on.

columns: [str], Optional​

Columns to export to the output file, for example, ["num", "name", "score"]. If not specified, the entire table is exported.

Returns​

A structure containing the following attributes:

  • error_code: int
    • 0: The operation succeeds.
    • A non-zero value indicates a specific error condition.
  • error_msg: str
    When error_code is non-zero, error_msg provides additional details about the error.

Examples​

Export your table to a csv file​

table_object.export_data(os.getcwd() + "/export_data.csv", {"header": True, "file_type": "csv", "delimiter": ",", "offset": 2, "limit": 7, "row_limit": 3}, ["num", "name", "score"])

Export your table to a jsonl file​

table_object.export_data(os.getcwd() + "/export_data.jsonl", {"file_type": "jsonl", "offset": 1, "limit": 8, "row_limit": 2}, ["num", "name", "score"])

delete​

table_object.delete(cond = None)

Deletes rows from the table based on the specified condition.

Parameters​

cond: str, Optional​

A string that defines the condition for selecting rows to delete. The parameter can be an expression, a function, or any other form of conditional logic that evaluates to True for the rows that should be deleted. If cond is not specified or set to None, the method will delete all rows in the table.

NOTE
  • The cond parameter currently supports 'and' and 'or' logical expressions only.
  • cond must not be an empty string.

Returns​

A structure containing the following attributes:

  • error_code: int
    • 0: The operation succeeds.
    • A non-zero value indicates a specific error condition.
  • error_msg: str
    When error_code is non-zero, error_msg provides additional details about the error.

Examples​

Remove all rows in the table​

# Clear all data in the current table
table_object.delete()
# Clear all data in the current table
table_object.delete(None)

Conditional row deletion​

# Create a table named "my_table" with two columns:
# - Integer column "c1"
# - Vector column "vec"
table_object = db_instance.create_table("my_table", {"c1": {"type": "integer"}, "vec": {"type": "vector,4,float"},})
# Insert two rows of data into the "my_table"
table_object.insert([{"c1": 90, "vec": [1.0, 1.2, 0.8, 0.9],}, {"c1": 80, "vec": [4.0, 4.2, 4.3, 4.5],},])
# Delete rows where "c1" equals 1
table_object.delete("c1 = 90")
# Create a table named "my_table" with one integer column "c1"
table_object = db_instance.create_table("my_table", {"c1": {"type": "integer"}})
# Insert three rows of data into the "my_table"
table_object.insert([{"c1": 90}, {"c1": 80}, {"c1": 95}])
# Delete rows where "c1" is between 70 and 90 (inclusive)
table_object.delete("c1 >= 70 and c1 <= 90")

update data​

table_object.update(cond, data)

Searches for rows that match the specified condition and updates them accordingly.

Parameters​

cond: str, Required​

A string that defines the condition for selecting rows to update. It represents a logical expression, a function, or any other form of conditional logic that evaluates to True for the rows that should be updated. If cond is not specified or set to Null, the method will update all rows in the table.

data: dict[str, Any], Required​

A non-empty dictionary where each key indicates a column name and each value indicates the new value for the corresponding cell.

Returns​

A structure containing the following attributes:

  • error_code: int
    • 0: The operation succeeds.
    • A non-zero value indicates a specific error condition.
  • error_msg: str
    When error_code is non-zero, error_msg provides additional details about the error.

Examples​

# Update rows where column "c1" equals 1, setting "c2" to 90 and "c3" to 900
table_object.update("c1 = 1", {"c2": 90, "c3": 900})
# Update rows where column "c1" is greater than 2, setting "c2" to 100 and "c3" to 1,000
table_object.update("c1 > 2", {"c2": 100, "c3": 1000})

output​

table_object.output(columns)

This method allows you to customize the output of your query by selecting specific columns, applying aggregation functions, or performing arithmetic operations.

Parameters​

columns: list[str], Required​

A non-empty list of strings specifying the columns to include in the output. Each string in the list can represent:

  • A user-defined column name: The name of the column to include in the output, e.g., "body".
  • All user-defined columns: Use a wildcard "*" to select all columns.
  • A special system column: system-generated columns include:
    • _row_id: An automatically generated, unique identifier for each row in the table. It serves as a unique key for each row but does not necessarily correspond to the actual row number. When the data in a row is updated, the _row_id for that row is also changed to reflect the update.
    • _score: A BM25 score used in full-text search.
    • _similarity: Used by IP and cosine metrics in dense or sparse vector search.
    • _distance: Used by L2 metric in dense vector search.
  • An aggregation function: Apply an aggregation operation on specified columns. Supported aggragation functions include:
    • count
    • min
    • max
    • sum
    • avg
  • An arithmetic function: Apply an arithmetic operation on specified columns (e.g., c1+5).
NOTE

The list must contain at least one element. Empty lists are not allowed.

Returns​

An infinity.local_infinity.table.LocalTable object in Python module mode or an infinity.remote_thrift.table.RemoteTable object in client-server mode.

NOTE

This method specifies the projection columns for the current table but does not directly produce displayable data. To display the query results, use output() in conjunction with methods like to_result(), to_df(), to_pl(), or to_arrow() to materialize the data.

Examples​

Select columns to display​

# Select all columns
table_object.output(["*"]).to_pl()
# Select columns "num" and "body"
table_object.output(["num", "body"]).to_df()
# Select a system-generated column "_row_id"
table_object.output(["_row_id"]).to_pl()

Perform aggregation or arithmetic operations on selected columns​

# Specify that the output should display the average value of all cells in column "c2"
table_object.output(["avg(c2)"]).to_pl()
# Select column "c1" and request all cells in this column to be displayed with their original values increased by 5
table_object.output(["c1+5"]).to_pl()
# Specify that the output should display the result of an arithmetic operation combining two aggregation functions
table_object.output(["min(c1) + max(c2)"]).to_pl()
# Specify that the output should display the row number of the current table
table_object.output(["count(*)"]).to_pl()
# Select column "num" and request all cells in this column to be displayed with their original values divided by 10
table_object.output(["num / 10"]).to_pl()
# Select column "num" and display all its cells as absolute values
table_object.output(["abs(num)"]).to_pl()
# Specify that the output should display the result of three multiplied by five
# Note that no columns are involved in this example!
# Either of the following works: 
table_object.output(["3 * 5"]).to_pl()

filter​

table_object.filter(cond)

Creates a filtering condition expression for the current table.

NOTE

This method creates a filtering condition for your query. To display the results, you must chain it with output(columns), which specifies the columns to output, and a method such as to_pl(), to_df(), or to_arrow() to format the query results.

Parameters​

cond: str, Required​

A non-empty string representing the filter condition. It comprises one or multiple expressions combined by 'and' or 'or' logical operators, where each expression uses comparison operators to set criteria for keeping or removing rows.

NOTE

Currently, only 'and' and 'or' logical expressions are supported.

Returns​

An infinity.local_infinity.table.LocalTable object in Python module mode or an infinity.remote_thrift.table.RemoteTable object in client-server mode.

NOTE

This method specifies a filtering condition for the rows in the current table but does not directly produce displayable data. To display the query results, use filter() in conjunction with methods like to_result(), to_df(), to_pl(), or to_arrow() to materialize the data.

Examples​

table_object.output(["c1", "c2"]).filter("(-7 < c1 or 9 >= c1) and (c2 = 3)").to_pl()
table_object.output(["*"]).filter("c2 = 3").to_pl()

match_dense​

table_object.match_dense(vector_column_name, embedding_data, embedding_data_type, distance_type, topn, knn_params = None)

Creates a dense vector search expression to identify the top n closest rows to the given dense vector. Suitable for working with dense vectors (dense embeddings) or multi-vectors (multiple dense embeddings in one row).

NOTE

To display your query results, you must chain this method with output(columns), which specifies the columns to output, and a method such as to_pl(), to_df(), or to_arrow() to format the query results.

Parameters​

vector_column_name: str, Required​

A non-empty string indicating the name of the vector multi-vector column to search on.

embedding_data: list/np.ndarray, Required​

The query vector data to compare against. This should be provided as a list or a one-dimensional NumPy array of numerical values.

embedding_data_type: str, Required​

Specifies the data type of the embedding vector. Commonly used types (values) include:

  • "float"
  • "uint8".

distance_type: str, Required​

The distance metric to use in similarity search.

  • "ip": Inner product.
  • "l2": Euclidean distance.
  • "cosine": Cosine similarity.

topn: int, Required​

An integer indicating the number of nearest neighbours to return.

knn_params: dict[str, str], Optional​

A dictionary representing additional KNN or ANN search parameters. Currently only "ef" is supported.

  • "ef": str, Recommended value: one to ten times the value of topn.
    • For example, if you set topn to 10, you can set "ef" to "50".
    • If you set "ef" too high, search performance may worsen.
    • If you do not set "ef" or set it to a value lower than topn, the search uses the topn value as the value for "ef".

Returns​

  • Success: An infinity.local_infinity.table.LocalTable object in Python module mode or an infinity.remote_thrift.table.RemoteTable object in client-server mode.
  • Failure: InfinityException
    • error_code: int A non-zero value indicating a specific error condition.
    • error_msg: str A message providing additional details about the error.

Examples​

# Find the 100 nearest neighbors using Euclidean distance
# If no vector index is created on the column being queried, then the vector search defaults to a brute-force search.
# In such case, set `knn_params` to `None` or leave it blank.
table_object.output(["*"]).match_dense("vec", [0.1,0.2,0.3], "float", "l2", 100).to_pl()
NOTE

knn_params settings will not take effect here because no index has been created.

Perform a vector search in HNSW​

  1. Ensure that you have successfully built an HNSW index. If uncertain, you can rebuild the index, setting ConflictType to Ignore.
  2. Set the ef value as follows:
from infinity.index import IndexInfo, IndexType
table_object.create_index("my_index", IndexInfo("vec", IndexType.Hnsw, {"ef_construction": "50"}))
# Find the 2 nearest neighbors using cosine distance
# If an HNSW index is successfully built on the column being queried, then the vector search uses this index,
# regardless of whether `knn_params` is set.
# If you leave `knn_params` blank, the search uses the `topn` value as the value for `"ef"`.
table_object.output(["*"]).match_dense("vec", [1, 2, 3], "uint8", "cosine", 2).to_pl()
from infinity.index import IndexInfo, IndexType
table_object.create_index("my_index", IndexInfo("vec", IndexType.Hnsw, {"ef_construction": "50"}))
# Find the 2 nearest neighbors using inner product distance
# If an HNSW index is successfully built on the column being queried, then the vector search uses this index,
# regardless of whether `knn_params` is set.
table_object.output(["*"]).match_dense("vec", [0.1,0.2,0.3], "float", "ip", 2, {"ef": "100"}).to_pl()
NOTE

If the HNSW index is not created successfully, the search will fall back to a brute-force search.

match_sparse​

table_object.match_sparse(vector_column_name, sparse_data, distance_type, topn, opt_params)

Creates a sparse vector search expression to identify the top n closest rows to the given sparse vector. Suitable for working with sparse vectors (sparse embeddings).

NOTE

To display your query results, you must chain this method with output(columns), which specifies the columns to output, and a method such as to_pl(), to_df(), or to_arrow() to format the query results.

Parameters​

vector_column_name: str, Required​

A non-empty string indicating the name of the column to query on.

sparse_data: SparseVector(list[int], list[int] | list[float]), Required​

The query sparse vector data to compare against. The sparse_data parameter should be provided as a SparseVector object, which has two members:

  • indices: A list of the indices, each corresponding to a non-zero value in the sparse vector.
  • values: A list of the corresponding values for each index in the indices list.
NOTE

If you have a dictionary of indices and values, you can create a SparseVector object using the SparseVector class. For example:

from infinity.common import SparseVector
dic_sparse_vector = {"indices": [0, 10, 20], "values": [0.1, 0.2, 0.3]}
sparse_vector = SparseVector(**dic_sparse_vector)

distance_type: str, Required​

A non-empty string indicating the distance type for the search. Currently, only "ip" (inner product) is supported.

topn: int, Required​

An integer indicating the number of nearest neighbours to return.

opt_params: dict[str, str], Optional​

A dictionary representing additional parameters for the sparse vector search. Following are parameters for the BMP index:

  • "alpha": str
    "0.0" ~ "1.0" (default: "1.0") - A "Termination Conditions" parameter. The smaller the value, the more aggressive the pruning.
  • "beta": str
    "0.0" ~ "1.0" (default: "1.0") - A "Query Term Pruning" parameter. The smaller the value, the more aggressive the pruning.

Returns​

  • Success: An infinity.local_infinity.table.LocalTable object in Python module mode or an infinity.remote_thrift.table.RemoteTable object in client-server mode.
  • Failure: InfinityException
    • error_code: int A non-zero value indicating a specific error condition.
    • error_msg: str A message providing additional details about the error.

Examples​

# As demonstrated in the following example:
# The sparse vector search is performed on column "sparse_column" to find the 100 nearest neighbors using inner product
# SparseVector([0, 10, 20], [0.1, 0.2, 0.3]) represents the sparse vector to compare against:
# - 0: the index of 0.1
# - 10: the index of 0.2
# - 20: the index of 0.3
# If no sparse vector index is created on the column being queried, then the search defaults to a brute-force search.
# In such case, set `opt_params` to `None` or leave it blank.
from infinity.common import SparseVector
table_object.output(["*"]).match_sparse('sparse_column', SparseVector([0, 10, 20], [0.1, 0.2, 0.3]), 'ip', 100).to_df()
NOTE

opt_params settings will not take effect here because no index has been created.

Perform a sparse vector search in BMP​

from infinity.index import IndexInfo, IndexType
table_object.create_index("my_index", [IndexInfo("sparse_column", IndexType.BMP)])
# Find the 100 nearest neighbors using inner product
# If a BMP index is successfully built on the column being queried, then the sparse vector search uses this index,
# regardless of whether `opt_params` is set.
# If you leave `opt_params` blank, the search takes the default settings for `"alpha"` and `"beta"`.
from infinity.common import SparseVector
table_object.output(["*"]).match_sparse('sparse_column', SparseVector([0, 10, 20], [0.1, 0.2, 0.3]), 'ip', 100, {"alpha": "1.0", "beta": "1.0"}).to_df()
from infinity.index import IndexInfo, IndexType
table_object.create_index("my_index", IndexInfo("sparse_column", IndexType.BMP))
# Find the 100 nearest neighbors using inner product
# If a BMP index is successfully built on the column being queried, then the sparse vector search uses this index,
# regardless of whether `opt_params` is set.
# You can set the values of `"alpha"` or `"beta"` in `opt_params`, which overrides the default settings.
from infinity.common import SparseVector
table_object.output(["*"]).match_sparse('sparse_column', SparseVector([0, 10, 20], [8, 10, 66]), 'ip', 100, {"alpha": "1.0", "beta": "1.0"}).to_df()

match_text​

table_object.match_text(fields, matching_text, topn, extra_options)

Creates a full-text search expression on the specified field(s)/column(s) to identify the most relevant rows.

NOTE

To display your query results, you must chain this method with output(columns), which specifies the columns to output, and a method such as to_pl(), to_df(), or to_arrow() to format the query results.

Parameters​

fields: str, Required​

A non-empty, comma-separated string of column names on which the full-text search will be performed.

NOTE

Ensure that a full-text index has been successfully built on each column involved before executing a full-text search; otherwise, an error will occur.

NOTE

To display your query results, you must chain this method with output(columns), which specifies the columns to output, and a method such as to_pl(), to_df(), or to_arrow() to format the query results.

matching_text: str, Required​

A non-empty text string to search for. You can use various search options within the matching text, including:

  • Single terms: "blooms"
  • OR multiple terms: "Bloom OR filter", "Bloom || filter" or just "Bloom filter"
  • Phrase search: '"Bloom filter"'
  • AND multiple terms: "space AND efficient", "space && efficient" or "space + efficient"
  • Escaping reserved characters: "space\-efficient"
  • Sloppy phrase search: '"harmful chemical"~10'
  • Field-specific search: "title:(quick OR brown) AND body:foobar"

topn: int, Required​

Specifies the number of the most relevant rows to retrieve, e.g., assign 10 to obtain the ten most relevant rows.

extra_options: dict, Optional​

An optional dictionary specifying the following search options:

  • "default_field": str, Optional
    • If "fields" is an empty string, this parameter specifies the default field to search on.
  • "operator": str, Optional
    • If not specified, the search follows Infinity's full-text search syntax, meaning that logical and arithmetic operators, quotation marks and escape characters will function as full-text search operators, such as:
      • AND operator: AND, &&, +
      • OR operator: OR, ||
      • NOT operator: NOT, !, -
      • PAREN operator: (, ), need to appear in pairs, and can be nested.
      • COLON operator: :: Used to specify field-specific search, e.g., body:foobar searches for foobar in the body field.
      • CARAT operator: ^: Used to boost the importance of a term, e.g., quick^2 brown boosts the importance of quick by a factor of 2, making it twice as important as brown.
      • TILDE operator: ~: Used for sloppy phrase search, e.g., "harmful chemical"~10 searches for the phrase "harmful chemical" within a tolerable distance of 10 words.
      • SINGLE_QUOTED_STRING: Used to search for a phrase, e.g., 'Bloom filter'.
      • DOUBLE_QUOTED_STRING: Used to search for a phrase, e.g., "Bloom filter".
      • Escape characters: Used to escape reserved characters, e.g., space\-efficient. Starting with a backslash \ will escape the following characters:
        ' ', '+', '-', '=', '&', '|', '!', '(', ')', '{', '}', '[', ']', '^', '"', '~', '*', '?', ':', '\', '/'
    • If specified, Infinity's full-text search syntax will not take effect, and the specified operator will be interpolated into matching_text.
      Useful for searching text including code numbers like "A01-233:BC".
      • {"operator": "or"}: Interpolates the OR operator between words in matching_text to create a new search text.
        For example, reinterprets "A01-233:BC" as '"A01" OR "-233" OR "BC"'.
      • {"operator": "and"}: Interpolates the AND operator between words in matching_text to create a new search text.
        For example, reinterprets "A01-233:BC" as '"A01" AND "-233" AND "BC"'.

Returns​

  • Success: An infinity.local_infinity.table.LocalTable object in Python module mode or an infinity.remote_thrift.table.RemoteTable object in client-server mode.
  • Failure: InfinityException
    • error_code: int A non-zero value indicating a specific error condition.
    • error_msg: str A message providing additional details about the error.

Examples​


questions = [
    r"blooms",  # single term
    r"Bloom filter",  # OR multiple terms
    r'"Bloom filter"',  # phrase: adjacent multiple terms
    r"space efficient",  # OR multiple terms
    r"space\-efficient",  # Escape reserved character '-', equivalent to: `space efficient`
    r'"space\-efficient"',  # phrase and escape reserved character, equivalent to: `"space efficient"`
    r'"harmful chemical"~10',  # sloppy phrase, refers to https://www.elastic.co/guide/en/elasticsearch/reference/current/query-dsl-match-query-phrase.html
    r'title:(quick OR brown) AND body:foobar', # search `(quick OR brown)` in the `title` field. keep fields empty.
]
for question in questions:
    table_object.output(["*"]).match_text('body', question, 2).to_df()
    table_object.output(["*"]).match_text('', question, 2, {'default_field': 'body'}).to_df()

fusion​

table_object.fusion(method, topn, fusion_params = None)

Creates a reranking expression for multiple retrieval ways to identify the top n closest rows.

NOTE

To display your query results, you must chain this method with output(columns), which specifies the columns to output, and a method such as to_pl(), to_df(), or to_arrow() to format the query results.

Parameters​

method: str, Required​

A non-empty string indicating the reranking methods to use:

  • "rrf": Reciprocal rank fusion
    RRF is a method for combining multiple result sets with varying relevance indicators into a single result set. It requires no tuning, and the relevance indicators need not be related to achieve high-quality results. RRF is particularly useful when you are uncertain of the relative importance of each retrieval way.
    RRF uses the following formula to calculate the score for ranking each document:

    score = 0.0
    for q in queries:
        if d in result(q):
            score += 1.0 / ( k + rank( result(q), d ) )
    return score

    # Where
    # k is the ranking constant,
    # q is a query in a set of queries,
    # d is a document in the result set of q,
    # result(q) is the result set of q, and
    # rank( result(q), d ) is the rank of d within the result(q), starting from 1.

  • "weighted_sum"
    The weighted sum approach assigns different weights to different retrieval ways, allowing you to emphasize specific ways. This is particularly useful when you are certain of each path's relative importance.

  • "match_tensor"
    Infinity's tensor-based late interaction reranking approach.

topn: int, Required​

An integer indicating the number of the most relevant rows to retrieve.

fusion_params: dict[str, Any], Optional​

A dictionary representing additional options for the selected reranking method:

  • RRF-specific options: Optional
    Settings when employing RRF for reranking.

    • "rank_constant": The smoothing constant for RRF reranking, e.g., {"rank_constant": 60}. Defaults to 60.

  • weighted_sum-specific options: Optional
    Settings when employing Weighted Sum for reranking.

    • "weights": Specifies the weight for each retrieval way. For example, {"weights": "1,2,0.5"} sets weights of 1, 2, and 0.5 for the first, second, and third retrieval ways, respectively. The default weight of each retrieval way is 1.0. If "weight" is not specified, all retrieval ways will be assiged the default weight of 1.0.

  • match_tensor-specific options: Optional
    Settings when employing match_tensor for reranking.

    • "field": The name of the tensor column for reranking.
    • "data": The tensor data to compare against. This should be provided as a list of lists or a two-dimensional NumPy array of numerical values.
    • "data_type": The element data type of the query tensor. Usually "float".

Returns​

  • Success: An infinity.local_infinity.table.LocalTable object in Python module mode or an infinity.remote_thrift.table.RemoteTable object in client-server mode.
  • Failure: InfinityException
    • error_code: int A non-zero value indicating a specific error condition.
    • error_msg: str A message providing additional details about the error.

Examples​

The following code snippets illustrate the use of fused reranking in a three-way retrieval.

Use RRF for reranking​

from infinity.common import SparseVector
table_object.output(["num", "body", "vec", "sparse_column", "year", "tensor", "_score"])
            .match_dense("vec", [3.0, 2.8, 2.7, 3.1], "float", "cosine", 3)
            .match_sparse("sparse_column", SparseVector([0, 20, 80], [1.0, 2.0, 3.0]), "ip", 3)
            .match_text("body", "blooms", 10)
            .filter("year < 2024")
            .fusion("rrf", 2)
            .to_pl()
from infinity.common import SparseVector
table_object.output(["num", "body", "vec", "sparse_column", "year", "tensor", "_score"])
            .match_dense("vec", [3.0, 2.8, 2.7, 3.1], "float", "cosine", 3)
            .match_sparse("sparse_column", SparseVector([0, 20, 80], [1.0, 2.0, 3.0]), "ip", 3)
            .match_text("body", "blooms", 10)
            .filter("year < 2024")
            .fusion("rrf", 2, {"rank_constant": 30})
            .to_pl()

Use Weighted Sum for reranking​

from infinity.common import SparseVector
table_object.output(["num", "body", "vec", "sparse_column", "year", "tensor", "_score"])
            .match_dense("vec", [3.0, 2.8, 2.7, 3.1], "float", "cosine", 3)
            .match_sparse("sparse_column", SparseVector([0, 20, 80], [1.0, 2.0, 3.0]), "ip", 3)
            .match_text("body", "blooms", 10)
            .filter("year < 2024")
            .fusion("weighted_sum", 2, {"weights": "1,2,0.5"})
            .to_pl()

Use tensor reranking​

from infinity.common import SparseVector
table_object.output(["num", "body", "vec", "sparse_column", "year", "tensor", "_score"])
            .match_dense("vec", [3.0, 2.8, 2.7, 3.1], "float", "cosine", 3)
            .match_sparse("sparse_column", SparseVector([0, 20, 80], [1.0, 2.0, 3.0]), "ip", 3)
            .match_text("body", "blooms", 10)
            .filter("year < 2024")
            .fusion("match_tensor", 2, {"field": "tensor", "data_type": "float", "data": [[0.0, -10.0, 0.0, 0.7], [9.2, 45.6, -55.8, 3.5]]})
            .to_pl()

to_result​

table_object.to_result()

Returns the query result as a tuple.

NOTE

Call to_result() in a chain after (not necessarily "immediately after") output(columns) on the same table object.

NOTE

We recommend calling to_df(), to_pl(), or to_arrow() to format your results.

Returns​

tuple[dict[str, list[Any]], dict[str, Any]]

to_df​

table_object.to_df()

Returns the query result in pandas DataFrame format.

NOTE

Call to_df() in a chain after (not necessarily "immediately after") output(columns) on the same table object.

Examples​

# Format columns "c1" and C2" of the current table into a pandas DataFrame
res = table_object.output(["c1", "c2"]).to_df()

Returns​

A pandas.DataFrame object.

to_pl​

table_object.to_pl()

Returns the query result in Polas DataFrame format.

NOTE

Call to_pl() in a chain after (not necessarily "immediately after") output(columns) on the same table object.

Returns​

A polas.DataFrame object.

Examples​

# Format a vector search result into a Polas DataFrame. 
res = table_object.output(["*"]).match_dense("vec", [3.0, 2.8, 2.7, 3.1], "float", "ip", 10).to_pl()

to_arrow​

table_object.to_arrow()

Returns the query result in Apache Arrow Table format.

NOTE

Call to_arrow() in a chain after (not necessarily "immediately after") output(columns) on the same table object.

Returns​

A pyarrow.Table object.

Examples​

# Format the current table object into an Apache Arrow Table. 
res = table_object.output(["*"]).filter("score >= 90").to_arrow()