tlc.core.objects.tables.from_table.virtual_columns_added_table#

Module Contents#

Classes#

Class

Description

VirtualColumn

Defines a single column within a VirtualColumnsAddedTable

VirtualColumnsAddedTable

A procedural table where an input table are augmented by virtual columns (i.e. virtual properties) according to user-configurable procedures.

API#

class tlc.core.objects.tables.from_table.virtual_columns_added_table.VirtualColumn(schema_expression: str = '', value_expression: str = '')#

Bases: abc.ABC

Defines a single column within a VirtualColumnsAddedTable

static schema() → tlc.core.schema.Schema#

Defines the schema for a single virtual column

class tlc.core.objects.tables.from_table.virtual_columns_added_table.VirtualColumnsAddedTable(url: tlc.core.url.Url | None = None, created: str | None = None, dataset_name: str | None = None, row_cache_url: tlc.core.url.Url | None = None, row_cache_populated: bool = False, virtual_columns: list[tlc.core.objects.tables.from_table.virtual_columns_added_table.VirtualColumn] | None = None, init_parameters: Any = None)#

Bases: tlc.core.objects.table.Table

A procedural table where an input table are augmented by virtual columns (i.e. virtual properties) according to user-configurable procedures.

Parameters:

  • url – The URL of the table.

  • created – The creation time of the table.

  • description – The description of the table.

  • row_cache_url – The URL of the row cache.

  • row_cache_populated – Whether the row cache is populated.

  • override_table_rows_schema – The schema to override the table rows schema.

  • init_parameters – The initial parameters of the table.