这是获取数据库中所有主键列表的最佳方式 - 还是有更好的方法？
SELECT
KCU.TABLE_NAME AS Table_Name,
KCU.CONSTRAINT_NAME AS Constraint_Name,
KCU.COLUMN_NAME AS COLUMN_NAME
FROM
INFORMATION_SCHEMA.TABLE_CONSTRAINTS TC
JOIN INFORMATION_SCHEMA.KEY_COLUMN_USAGE KCU
ON KCU.CONSTRAINT_SCHEMA = TC.CONSTRAINT_SCHEMA
AND KCU.CONSTRAINT_NAME = TC.CONSTRAINT_NAME
AND KCU.TABLE_SCHEMA = TC.TABLE_SCHEMA
AND KCU.TABLE_NAME = TC.TABLE_NAME
WHERE
TC.CONSTRAINT_TYPE = 'PRIMARY KEY'
ORDER BY
KCU.TABLE_SCHEMA, KCU.TABLE_NAME, KCU.CONSTRAINT_NAME