非常妙的SQL SERVER语句集锦(推荐)

概述说明：复制表(只复制结构,源表名：a 新表名：b) SQL: select * into b from a where 1<>1 说明：拷贝表(拷贝数据,源表名：a 目标表名：b) SQL: insert into b(a, b, c) select d,e,f from a; 说明：显示文章、提交人和最后回复时间 SQL: select a.title,a.username,b.adddate from table a,(sel… 说明：复制表(只复制结构,源表名：a 新表名：b)

sql: select * into b from a where 1<>1

说明：拷贝表(拷贝数据,源表名：a 目标表名：b)

sql: insert into b(a,b,c) select d,e,f from a;

说明：显示文章、提交人和最后回复时间

sql: select a.Title,a.username,b.adddate from table a,(select max(adddate) adddate from table where table.Title=a.Title) b

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

说明：日程安排提前五分钟提醒

sql: select * from 日程安排 where datediff(’minute’,f开始时间,getdate())>5

说明：两张关联表，删除主表中已经在副表中没有的信息

sql:

delete from info where not exists ( select * from infobz where info.infID=infobz.infID )

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,’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

说明：--

sql:

select * from studentinfo where not exists(select * from student where studentinfo.ID=student.ID) and 系名称=’"&strdepartmentname&"’ and 专业名称=’"&strprofessionname&"’ order by 性别,生源地,高考总成绩

说明：

从数据库中去一年的各单位电话费统计(电话费定额贺电化肥清单两个表来源）

sql:

SELECT a.userper,a.tel,a.standfee,TO_CHAR(a.telFeedate,’yyyy’) AS telyear,

SUM(decode(TO_CHAR(a.telFeedate,’mm’),’01’,a.factration)) AS JAN,’02’,a.factration)) AS FRI,’03’,a.factration)) AS MAR,’04’,a.factration)) AS APR,’05’,a.factration)) AS MAY,’06’,a.factration)) AS JUE,’07’,a.factration)) AS Jul,’08’,a.factration)) AS AGU,’09’,a.factration)) AS SEP,’10’,a.factration)) AS OCT,’11’,a.factration)) AS NOV,’12’,a.factration)) AS DEC

FROM (SELECT a.userper,b.telFeedate,b.factration

FROM TELFEESTAND a,TELFEE b

WHERE a.tel = b.telfax) a

GROUP BY a.userper,’yyyy’)

说明：四表联查问题：

sql: select * from a left inner join b on a.a=b.b right inner join c on a.a=c.c inner join d on a.a=d.d where .....

说明：得到表中最小的未使用的ID号

sql:

SELECT (CASE WHEN EXISTS(SELECT * FROM Handle b WHERE b.HandleID = 1) THEN MIN(HandleID) + 1 ELSE 1 END) as HandleID

FROM Handle

WHERE NOT HandleID IN (SELECT a.HandleID - 1 FROM Handle a) 总结

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