36.19. constraint_table_usage

36.19. `constraint_table_usage`
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The view constraint_table_usage identifies all tables in the current database that are used by some constraint and are owned by a currently enabled role. (This is different from the view table_constraints , which identifies all table constraints along with the table they are defined on.) For a foreign key constraint, this view identifies the table that the foreign key references. For a unique or primary key constraint, this view simply identifies the table the constraint belongs to. Check constraints and not-null constraints are not included in this view.

Table 36.17. constraint_table_usage Columns

Column Type Description
`table_catalog` `sql_identifier` Name of the database that contains the table that is used by some constraint (always the current database)
`table_schema` `sql_identifier` Name of the schema that contains the table that is used by some constraint
`table_name` `sql_identifier` Name of the table that is used by some constraint
`constraint_catalog` `sql_identifier` Name of the database that contains the constraint (always the current database)
`constraint_schema` `sql_identifier` Name of the schema that contains the constraint
`constraint_name` `sql_identifier` Name of the constraint

Column Type

Description

table_catalog sql_identifier

Name of the database that contains the table that is used by some constraint (always the current database)

table_schema sql_identifier

Name of the schema that contains the table that is used by some constraint

table_name sql_identifier

Name of the table that is used by some constraint

constraint_catalog sql_identifier

Name of the database that contains the constraint (always the current database)

constraint_schema sql_identifier

Name of the schema that contains the constraint

constraint_name sql_identifier

Name of the constraint

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36.18. `constraint_column_usage`	Home	36.20. `data_type_privileges`