SQL 常用语句，子查询整理 一、SQL 子查询语句 1、单行子查询 select ename,deptno,sal from emp where deptno=(select deptno from dept where loc='NEW YORK')； 2、多行子查询 SELECT ename,job,sal FROM EMP WHERE deptno in ( SELECT deptno FROM dept WHERE dname LIKE ...

时间:2024-12-05 21:51栏目:行业资料