SQL语句复制表的方法

T_SQL语句复制表的方法

我在SQL SERVER2000中有现个数据库DATAHR及DEMO,它们的结构是一样，其它有一个表名为：GBITEM.现在我想将DEMO数据库的表名：GBITEM的全部内容复制到DATAHR数据库的表名为：GBITEM中。请问此T-SQL语句应该怎么写？谢谢高人指点！

如果目的表已经存在:
insert into DATAHR.DBO.GBITEM
select * from DEMO.DBO.GBITEM
如果目的表不存在:
select * into DATAHR.DBO.GBITEM
from DEMO.DBO.GBITEM

--备份数据库OFSys
BACKUP DATABASE OFSys to disk = 'e:/OFSys'
还原
restore database test from disk = 'c:\test'

精妙SQL语句
精妙SQL语句
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
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 b;

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,(selectmax(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 bON a.a = b.c

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

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 whereinfo.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, UPD_DATE, STOCK_ONHAND

FROM TABLE2

WHERE TO_CHAR(UPD_DATE,'YYYY/MM') =

TO_CHAR(TO_DATE(TO_CHAR(SYSDATE, 'YYYY/MM')&#124;&#124; '/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 studentwhere 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

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)) ASJAN,

SUM(decode(TO_CHAR(a.telfeedate, 'mm'), '02', a.factration)) ASFRI,

SUM(decode(TO_CHAR(a.telfeedate, 'mm'), '03', a.factration)) ASMAR,

SUM(decode(TO_CHAR(a.telfeedate, 'mm'), '04', a.factration)) ASAPR,

SUM(decode(TO_CHAR(a.telfeedate, 'mm'), '05', a.factration)) ASMAY,

SUM(decode(TO_CHAR(a.telfeedate, 'mm'), '06', a.factration)) ASJUE,

SUM(decode(TO_CHAR(a.telfeedate, 'mm'), '07', a.factration)) ASJUL,

SUM(decode(TO_CHAR(a.telfeedate, 'mm'), '08', a.factration)) ASAGU,

SUM(decode(TO_CHAR(a.telfeedate, 'mm'), '09', a.factration)) ASSEP,

SUM(decode(TO_CHAR(a.telfeedate, 'mm'), '10', a.factration)) ASOCT,

SUM(decode(TO_CHAR(a.telfeedate, 'mm'), '11', a.factration)) ASNOV,

SUM(decode(TO_CHAR(a.telfeedate, 'mm'), '12', a.factration)) ASDEC

FROM (SELECT a.userper, a.tel, a.standfee, b.telfeedate,b.factration

FROM TELFEESTAND a, TELFEE b

WHERE a.tel = b.telfax) a

GROUP BY a.userper, a.tel, a.standfee, TO_CHAR(a.telfeedate,'yyyy')

说明：四表联查问题：

SQL: select * from a left inner join b on a.a=b.b right innerjoin 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

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来自: http://hi.baidu.com/seething/blog/item/98f152e75b2e1a2eb8382079.html