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
table_catalog
sql_identifier
Name of the database that contains the table that contains the column that is restricted by this constraint (always the current database)
table_schema
sql_identifier
Name of the schema that contains the table that contains the column that is restricted by this constraint
table_name
sql_identifier
Name of the table that contains the column that is restricted by this constraint
column_name
sql_identifier
Name of the column that is restricted by this constraint
ordinal_position
cardinal_number
Ordinal position of the column within the constraint key (count starts at 1)
position_in_unique_constraint
cardinal_number
For a foreign-key constraint, ordinal position of the referenced column within its unique constraint (count starts at 1); otherwise null