sqlÖеÄÓαê
declare @id varchar(10)
declare @nm varchar(10)
declare @table as table(emp varchar(10),empname varchar(10))
declare CurEmp cursor for select top 6 empid,empname from employee
open CurEmp
fetch next from CurEmp into @id,@nm
While @@fetch_status=0
begin
insert @table(emp,empname) values(@id,@nm)
fetch next from CurEmp into @id,@nm
end
close CurEmp
deallocate CurEmp
select * from @table
Èç¹ûÐèÒª´Óijһ½á¹û¼¯ÖÐÖðÒ»µØ¶ÁȡһÌõ¼Ç¼£¬¿ÉÒÔÓÃÓαêʵÏÖ£¬ÉÏÃæÊǸö¼òµ¥µÄÀý×Ó
Ïà¹ØÎĵµ£º
SQLÖеÄʱ¼äº¯Êý·Ç³£ÓÐÓã¬ÌرðÊÇÔÚÎÒÃǽøÐгõʼ¸³Öµ¡¢¸´ÔÓ²éѯµÄʱºò£¬¾ÍÏÔµÃÌØ±ð·½±ã¡£
1¡¢»ñµÃϵͳµ±Ç°Ê±¼ä
select getdate()
2¡¢DateName ( datepart , date )·µ»Ø±íʾָ¶¨ÈÕÆÚµÄÖ¸¶¨ÈÕÆÚ²¿·ÖµÄ×Ö·û´®¡£
--½ñÌìÊÇ2009-2-24--ÐÇÆÚ¶þ
SELECT DATENAME(year, getdate()) AS 'Year&nbs ......
Ò»£ºsql loader µÄÌØµã
oracle×Ô¼º´øÁ˺ܶàµÄ¹¤¾ß¿ÉÒÔÓÃÀ´½øÐÐÊý¾ÝµÄÇ¨ÒÆ¡¢±¸·ÝºÍ»Ö¸´µÈ¹¤×÷¡£µ«ÊÇÿ¸ö¹¤¾ß¶¼ÓÐ×Ô¼ºµÄÌØµã¡£
±ÈÈç˵expºÍimp¿ÉÒÔ¶ÔÊý¾Ý¿âÖеÄÊý¾Ý½øÐе¼³öºÍµ¼³öµÄ¹¤×÷£¬ÊÇÒ»ÖֺܺõÄÊý¾Ý¿â±¸·ÝºÍ»Ö¸´µÄ¹¤¾ß£¬Òò´ËÖ÷ÒªÓÃÔÚÊý¾Ý¿âµÄÈȱ¸·ÝºÍ»Ö¸´·½Ãæ¡£ÓÐ×ÅËٶȿ죬ʹÓüòµ¥£¬¿ì½ÝµÄÓŵ㣻ͬʱҲÓÐһР......
±í:TABLEA
¿Í»§±àºÅ Ó¦ÊÕ½ð¶î ÊÕ¿î½ð¶î
1001 100 80
1001 200 180&nb ......
µÚ¶þ²¿·Ö
1.ËùÓÐÄÐÉúµÄÐÕÃû¡¢ÄêÁä:
Select Sname£¬Sage
from student;
2.ËùÓÐÄêÁä´óÓÚ20£¬¼ÆËã»ú¿ÆÑ§ÏµÑ§ÉúÃûµ¥:
SELECT Sname
from Student
WHERE Sage>20 AND Sdept='CS';
3.³É¼¨´óÓÚ60µÄѧÉúѧºÅ:
SELECT Sno
from SC
WHERE Grade>60;
4.³É¼¨ÔÚ70µ½80Ö®¼äµÄѧÉúѧºÅ:
SELECT Sno
from SC
......
±³¾°£ºÏµÍ³ÒªÖ§³Ö¶àÖÖÊý¾Ý¿â£¬Í³Ò»insertµÄʱºò»ñÈ¡×Ô¶¯Ôö³¤ÁеĴ¦Àí·½Ê½
ÎÊÌâ1£ºinsert select·½°¸
sqlserver2000Äܹ»Ê¹ÓÃinsertSql SELECT @@IDENTITY AS 'Identity'µÄ·½Ê½À´»ñµÃ£¬µ«ÊÇmysqlÔòÖ»ÄÜʹÓÃexecuteUpdate(insertSql);
executeQuery('SELECT last_insert_id() ')ÕâÑùµÄ·½Ê½£¬·ñÔò»áÅ׳öÒì³££ºjava.sql.SQ ......