OmnisciServer

Public API

class modin.experimental.engines.omnisci_on_native.frame.omnisci_worker.OmnisciServer

Wrapper class for OmniSci backend.

static cast_to_compatible_types(table)

Cast PyArrow table to be fully compatible with OmniSci.

Parameters

table (pyarrow.Table) – Source table.

Returns

Table with fully compatible types with OmniSci.

Return type

pyarrow.Table

classmethod executeDDL(query)

Execute DDL SQL query.

Parameters

query (str) – SQL query.

classmethod executeDML(query)

Execute DML SQL query.

Parameters

query (str) – SQL query.

Returns

Execution result.

Return type

pyarrow.Table

classmethod executeRA(query)

Execute calcite query.

Parameters

query (str) – Serialized calcite query.

Returns

Execution result.

Return type

pyarrow.Table

classmethod put_arrow_to_omnisci(table, name=None)

Import Arrow table to OmniSci engine.

Parameters

  • table (pyarrow.Table) – A table to import.

  • name (str, optional) – A table name to use. None to generate a unique name.

Returns

Imported table name.

Return type

str

classmethod put_pandas_to_omnisci(df, name=None)

Import pandas.DataFrame to OmniSci backend.

Parameters

  • df (pandas.DataFrame) – A frame to import.

  • name (str, optional) – A table name to use. None to generate a unique name.

Returns

Imported table name.

Return type

str

classmethod start_server()

Initialize OmniSci server.

Do nothing if it is initiliazed already.

classmethod stop_server()

Destroy OmniSci server if any.