Help Center/ Data Warehouse Service / Standard Data Warehouse (9.1.0.x)/ DWS System Catalogs and Views/ System Catalogs/ PG_ATTRDEF

Updated on 2025-10-09 GMT+08:00

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PG_ATTRDEF

PG_ATTRDEF stores default values of columns.

**Table 1** PG_ATTRDEF columns
Column	Type	Description
adrelid	OID	Table to which the column belongs
adnum	Smallint	Column No.
adbin	pg_node_tree	Internal representation of the column's default value
adsrc	Text	Internal representation of the human-readable default value
adbin_on_update	pg_node_tree	Internal representation of the value of on_update_expr
adsrc_on_update	Text	Internal representation of the human-readable value of on_update_expr

Parent Topic: System Catalogs

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