11/12/2022 0 Comments Tableplus enum![]() ![]() Join the underlying partitioned Tables from this PartitionedTable and other on the key columns, then apply Return typeĭHError – partitioned_transform ( other, func ) ¶ Other in the same relative order as the partitioned table. Basically, merge stacks constituent tables on top of each In the merged result,ĭata from a constituent table is contiguous, and data from constituent tables appears in the same order theĬonstituent table appears in the PartitionedTable. Makes a new Table that contains all the rows from all the constituent tables. Returns a Table containing all the keys of the underlying partitioned table. Return typeĪlias of io. property key_columns : List ¶ Whether the underlying partitioned table is refreshing. Key_values ( Union ]) – the value(s) of the key column(s) Return typeĭHError – property is_refreshing : bool ¶ If there are multiple matching rows, a DHError is thrown. ![]() If there are no matching rows, the result is None. Gets a single constituent table by its corresponding key column value(s). Unique_keys ( bool) – whether the keys in ‘table’ are guaranteed to be uniqueĬonstituent_column ( str) – the constituent column name in ‘table’Ĭonstituent_table_columns ( list ) – the column definitions of the constituent tableĬonstituent_changes_permitted ( bool) – whether the values of the constituent column can changeĭHError – get_constituent ( key_values ) ¶ Key_cols ( Union ]) – the key column name(s) of ‘table’ Table ( Table) – the underlying partitioned table Consequently the constituent column can’t be emptyĬonstituent_changes_permitted: the value of table.is_refreshing Parameters When they are None, their values willĬolumn. Note: key_cols, unique_keys, constituent_column, constituent_table_columns,Ĭonstituent_changes_permitted must either be all None or all have values. Tables ( List ) – the constituent tablesĬonstituent_table_columns ( List ) – a list of column definitions compatible with all the constituentĭHError – classmethod from_partitioned_table ( table, key_cols = None, unique_keys = None, constituent_column = None, constituent_table_columns = None, constituent_changes_permitted = None ) ¶Ĭreates a PartitionedTable from the provided underlying partitioned Table. When constituent_table_columns isn’t provided, it will be set to the columnĭefinitions of the first table in the provided constituent tables. The result PartitionedTable has no key columns, and both its unique_keys and constituent_changes_permitted Parametersįilters ( Union, Sequence ]) – the filter condition expression(s) orĭHError – classmethod from_constituent_tables ( tables, constituent_table_columns = None ) ¶Ĭreates a PartitionedTable with a single column named ‘_CONSTITUENT_’ containing the provided constituent The filter method creates a new partitioned table containing only the rows meeting the filter criteria.įilters can not use the constituent column. Returns all the current constituent tables. List property constituent_tables : List ¶ All constituent tables in a partitioned table have the The column definitions for constituent tables. Str property constituent_table_columns : List ¶ The name of the column containing constituent tables. Refreshing if it contains any refreshing constituents. Also note that the underlying partitioned table must be If the underlying partitioned table is refreshing. Note, it is possible for constituent changes to not be permitted even if constituent tables are refreshing or ![]() has no modifies that include the constituent column If constituent changes are not permitted, the underlying partitioned table:Ĥ. property constituent_changes_permitted : bool ¶Ĭan the constituents of the underlying partitioned table change? Specifically, can the values of the Key values can be used to retrieve constituent tables from the partitioned table andĬan be used to perform operations with other like-keyed partitioned tables. class PartitionedTable ( j_partitioned_table ) ¶Ī partitioned table is a table containing tables, known as constituent tables.Įach constituent table has the same schema.ġ. class AsOfMatchRule ( value ) ¶Īn enum defining matching rules on the final column to match by in as-of join and reverse as-of join Instruments for working with Deephaven refreshing and static data. ![]() This module implements the Table, PartitionedTable and PartitionedTableProxy classes which are the main Toggle table of contents sidebar deephaven.table ¶ ![]()
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