TABLE_CONSTRAINTS Rowset

  • Article

GUID: DBSCHEMA_TABLE_CONSTRAINTS

Number of restriction columns: 7

Restriction columns: CONSTRAINT_CATALOG, CONSTRAINT_SCHEMA, CONSTRAINT_NAME, TABLE_CATALOG, TABLE_SCHEMA, TABLE_NAME, CONSTRAINT_TYPE

Default sort order: CONSTRAINT_CATALOG, CONSTRAINT_SCHEMA, CONSTRAINT_NAME, TABLE_CATALOG, TABLE_SCHEMA, TABLE_NAME, CONSTRAINT_TYPE

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

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. One of the following:

  • "UNIQUE"

  • "PRIMARY KEY"

  • "FOREIGN KEY"

  • "CHECK"

IS_DEFERRABLE

DBTYPE_BOOL

VARIANT_TRUE ? The table constraint is deferrable.

VARIANT_FALSE ? The table constraint is not deferrable.

INITIALLY_DEFERRED

DBTYPE_BOOL

VARIANT_TRUE ? The table constraint is initially deferred.

VARIANT_FALSE ? The table constraint is initially immediate.

DESCRIPTION

DBTYPE_WSTR

Human-readable description of the column