TABLE_CONSTRAINTS Rowset

The TABLE_CONSTRAINTS rowset identifies the table constraints defined in the catalog that are owned by a given user.

The TABLE_CONSTRAINTS rowset contains the following columns:

Column name Type indicator Description
CONSTRAINT_CATALOG DBTYPE_WSTR Catalog name. NULL if the provider does not support catalogs.
CONSTRAINT_SCHEMA DBTYPE_WSTR Unqualified schema name. NULL if the provider does not support schemas.
CONSTRAINT_NAME DBTYPE_WSTR Constraint name.
TABLE_CATALOG DBTYPE_WSTR Catalog name in which the table is defined. NULL if the provider does not support catalogs.
TABLE_SCHEMA DBTYPE_WSTR Unqualified schema name in which the table is defined. NULL if the provider does not support schemas.
TABLE_NAME DBTYPE_WSTR Table name.
CONSTRAINT_TYPE DBTYPE_WSTR Constraint type, that is, one of:
  • “UNIQUE”

  • “PRIMARY KEY”

  • “FOREIGN KEY”

  • “CHECK”
IS_DEFERRABLE DBTYEP_BOOL Specifies values as either of:
  • VARIANT_TRUE, which indicates that the table constraint is deferrable.

  • VARIANT_FALSE, which indicates that the table constraint is not deferrable.
INITIALLY_DEFERRED DBTYPE_BOOL Specifies values as either of:
  • VARIANT_TRUE, which indicates that the table constraint is initially deferred.

  • VARIANT_FALSE, which indicates that the table constraint is initially immediate.
DESCRIPTION DBTYPE_WSTR Human-readable description of the column.

Default Sort Order: CONSTRAINT_CATALOG, CONSTRAINT_SCHEMA, CONSTRAINT_NAME, TABLE_CATALOG, TABLE_SCHEMA, TABLE_NAME, CONSTRAINT_TYPE.