1. 说明:复制表(只复制结构,源表名:a,新表名:b) SQL: select*into b from a where1<>1; 2. 说明:拷贝表(拷贝数据,源表名:a,目标表名:b) SQL: insertinto b(a, b, c) select d, e, f from b; 3. 说明:显示文章、提交人和最后回复时间 SQL: select a.title, a.username, b.adddate fromtable a,( selectmax(adddate) adddate fromtablewheretable.title=a.title) b
4. 说明:外连接查询(表名1:a,表名2:b) SQL: select a.a, a.b, a.c, b.c, b.d, b.f from a LEFT OUT JOIN b ON a.a = b.c;
5. 说明:日程安排提前五分钟提醒 SQL: select* from 日程安排 wheredatediff(’’minute’’, f开始时间, getdate())>5
6. 说明:两张关联表,删除主表中已经在副表中没有的信息 SQL: deletefrom info wherenotexists( select* from infobz where info.infid=infobz.infid );
7. 说明:—— SQL: SELECT A.NUM, A.NAME, B.UPD_DATE, B.PREV_UPD_DATE FROM TABLE1,(SELECT X.NUM, X.UPD_DATE, Y.UPD_DATE PREV_UPD_DATE FROM (SELECT NUM, UPD_DATE, INBOUND_QTY, STOCK_ONHAND FROM TABLE2 WHERE TO_CHAR(UPD_DATE,’’YYYY/MM’’) = TO_CHAR(SYSDATE, ’’YYYY/MM’’)) X, (SELECT NUM, UPD_DATE, STOCK_ONHAND FROM TABLE2 WHERE TO_CHAR(UPD_DATE,’’YYYY/MM’’) = TO_CHAR(TO_DATE(TO_CHAR(SYSDATE, ’’YYYY/MM’’) || ’’/01’’,’’YYYY/MM/DD’’) -1, ’’YYYY/MM’’) ) Y, WHERE X.NUM = Y.NUM (+)AND X.INBOUND_QTY + NVL(Y.STOCK_ONHAND,0) <> X.STOCK_ONHAND ) B WHERE A.NUM = B.NUM;
8. 说明:—— SQL: select* from studentinfo wherenotexists(select*from student where studentinfo.id=student.id) and 系名称=’’"&strdepartmentname&"’’ and 专业名称=’’"&strprofessionname&"’’ orderby 性别, 生源地, 高考总成绩;
--贴点:【SQL SERVER 数据库实用SQL语句】
1.按姓氏笔画排序:
Select*From TableName OrderBy CustomerName Collate Chinese_PRC_Stroke_ci_as
2.分页SQL语句
select*from(select (row_number() OVER (ORDERBY tab.ID Desc)) as rownum,tab.*from 表名 As管理员在2009年8月13日编辑了该文章文章。