Question

我想通过执行例如：以下查询来检索数据库中的数据：

  Select * from Employee emp
inner join Department dept on emp.empid=dept.empid
where dept.OrderID like '%1' OR
      dept.OrderID  like '%,1' OR
      dept.OrderID  like '%,1,%' OR
      dept.OrderID  like '1,%'
order by ..;

**以上条件是 - ＆gt; 1 OR 2,1或2,1,3或1,2

而不是上述查询中的＆＃39; ，我希望传递select语句（从订单中选择OrderID，其中OrderName =＆＃39; ABCD＆＃39; < /强>）。

我已经尝试但没有明白语法。请任何人都可以建议我如何正确执行此操作。感谢。

Answer 1

试试这个：

     Select * from Employee emp
    inner join Department dept on emp.empid=dept.empid
    where dept.OrderID like CONCAT('%', (select OrderID from Orders where OrderName= 'ABCD')) OR
          dept.OrderID  like CONCAT('%,', (select OrderID from Orders where OrderName= 'ABCD')) OR
          dept.OrderID  like CONCAT('%,', (select OrderID from Orders where OrderName= 'ABCD'), ',%') OR
          dept.OrderID  like CONCAT((select OrderID from Orders where OrderName= 'ABCD'), ',%')
order by ..;

在SQLworkbench中查询LIKE子句和Select语句

1 个答案: