Help Center> GaussDB(DWS)> 8.2.0> System Catalogs and System Views> System Catalogs> PG_ATTRDEF

Updated on 2022-12-05 GMT+08:00

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PG_ATTRDEF

PG_ATTRDEF stores default values of columns.

**Table 1** PG_ATTRDEF columns
Name	Type	Description
adrelid	oid	Table to which the column belongs
adnum	smallint	Number of the column
adbin	pg_node_tree	Internal representation of the default value of the column
adsrc	text	Internal representation of the 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

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