的in查询 SELECT * FROM commodity
WHERE id IN (SELECT cid FROM specifications s WHERE s.id<600);
的EXISTS查询 SELECT * FROM commodity
WHERE exists(SELECT c.*
FROM specifications s,commodity c
快捷提问内创建一个类的对象有关代码如下: public class Test {
public final static Test t1 = new Test("test 1");
public final static Test t2 = new Test("test 2");
public final static Test t3 = new Test("tes
我的查询有以下结果集(不包括一些select语句,连接和where子句,因为我只需要如何完成的一般方法此): Select *
From hsi.itemdata
Where hsi.itemdata.itemtypenum in ('965','502','530','336','513','506','507','514','515','516')
ItemTypeNum | Ite