在SQL中检索列信息(复合键)

SELECT CONSTRAINT_NAME, TABLE_NAME, COLUMN_NAME, ORDINAL_POSITION, POSITION_IN_UNIQUE_CONSTRAINT
FROM INFORMATION_SCHEMA.KEY_COLUMN_USAGE
WHERE TABLE_NAME = 'your_table_name' AND CONSTRAINT_NAME = 'your_constraint_name';

SELECT tc.CONSTRAINT_NAME, tc.TABLE_NAME, ccu.COLUMN_NAME, ccu.ORDINAL_POSITION, ccu.POSITION_IN_UNIQUE_CONSTRAINT
FROM INFORMATION_SCHEMA.TABLE_CONSTRAINTS AS tc
JOIN INFORMATION_SCHEMA.CONSTRAINT_COLUMN_USAGE AS ccu
ON tc.CONSTRAINT_NAME = ccu.CONSTRAINT_NAME
WHERE tc.TABLE_NAME = 'your_table_name' AND tc.CONSTRAINT_TYPE = 'PRIMARY KEY';

EXEC sp_pkeys 'your_table_name';