ÇóÒ»ÌõÅÅÐòSQL - ÆäËûÊý¾Ý¿â¿ª·¢ / MySQL/Postgresql
±íA
×Ö¶Î:fid,title
fid,title
1 ÕÅÈý
1 ÍõÎå
1 ÕÅËÄ
1 ÕŶþ
1 ÍõËÄ
3 ÕÅÈý·¢²¼
4 ÍõÎå·¢²¼
5 ÕÅÈý·¢²¼
6 ÕÅÈý·¢²¼2
fid=1µÄtitleÊÇÐÕÃû£¬²»µÈÓÚ1µÄtitleÊÇÐÅÏ¢ÇÒ°üº¬·¢²¼È˵ÄÐÕÃû£¬ÈçºÎÓÃSQLÁгö¸÷¸öÈ˵ķ¢²¼ÊýÁ¿µÝ¼õÅÅÐò
(²»Òª¸ß¹ÀÄãµÄººÓï±í´ïÄÜÁ¦»òÕßÎҵĺºÓïÀí½âÄÜÁ¦)
½¨ÒéÄãÁгöÄãµÄ±í½á¹¹£¬²¢Ìṩ²âÊÔÊý¾ÝÒÔ¼°»ùÓÚÕâЩ²âÊÔÊý¾ÝµÄËù¶ÔÓ¦ÕýÈ·½á¹û¡£
²Î¿¼Ò»ÏÂÕâ¸öÌù×ÓµÄÌáÎÊ·½Ê½http://topic.csdn.net/u/20091130/20/8343ee6a-417c-4c2d-9415-fa46604a00cf.html
1. ÄãµÄ create table xxx .. Óï¾ä
2. ÄãµÄ insert into xxx ... Óï¾ä
3. ½á¹ûÊÇʲôÑù£¬£¨²¢¸øÒÔ¼òµ¥µÄËã·¨ÃèÊö£©
4. ÄãÓõÄÊý¾Ý¿âÃû³ÆºÍ°æ±¾(¾³£ÓÐÈËÔÚMS SQL server°æÎÊ MySQL)
ÕâÑùÏë°ïÄãµÄÈË¿ÉÒÔÖ±½Ó´î½¨ºÍÄãÏàͬµÄ»·¾³£¬²¢ÔÚ¸ø³ö·½°¸Ç°½øÐвâÊÔ£¬±ÜÃâÎÄ×ÖÃèÊöÀí½âÉϵÄÎó²î¡£
MySQL
create table test1
(fid,title)
insert into test1 select '1','ÕÅÈý'
insert into test1 select '1','ÍõÎå'
insert into test1 select '1','ÍõËÄ'
insert into test1 select '2','ÐÅÏ¢XÍõËÄ·¢²¼'
insert into test1 select '3','ÐÅÏ¢XÍõÎå·¢²¼'
insert into test1 select '4','ÐÅÏ¢XXÍõÎå'
insert into test1 select '3','ÐÅÏ¢XXÍõËÄ·¢²¼'
insert into test1 select '3','ÐÅÏ¢XXXÍõËÄ·¢²¼'
insert into test1 select '1','XXXÕÅÈý·¢²¼'
/*
ÒªµÃµ½ÕâÑùµÄÅÅÐб¨±í£º
n
Ïà¹ØÎÊ´ð£º
ÐèÇóÈçÏ£º
ѧԺ academy£¨aid,aname£©
°à¼¶ class£¨cid,cname,aid£©
ѧÉú stu(sid,sname,aid,cid)
סËÞÇø region(rid,rname)
ËÞÉáÂ¥ build(bid,rid,bnote) bnoteÊÇ¡®ÄС¯/¡®Å®¡¯
ËÞÉá dorm(did,rid,bid£¬bedn ......
ÓÐÕâÑùÒ»ÌõSQL
Select Get_Costtaxrate(col1), Get_Tcostvalue(col1) from a
ÆäÖÐGet_Costtaxrate¡¢Get_Tcostvalue¶¼ÊǺ¯Êý£¬ÕâÁ½¸öº¯ÊýÀïÃæ¶¼ÊDzéÕÒÒ»¸ö´ó±í£¬Get_Tcostvalue»¹ÐèÒªµ÷ÓÃGet_C ......
sp ³ÌÐò
delimiter //
create procedure ma()
begin
declare i int default 0;
while i<11 do
set i=i+1;
select i;
end while;
end //
delimiter ;
1+2+...+9+10
ΪʲôÕâ¸ö³ÌÐòÎÞ·¨ÊµÏÖÀÛ¼ÓЧ¹û
/ ......
ÕâÀïÏëÁ˽âÏ£¬¹ØÓÚSQL ServerÖзÖÒ³ºÍOracleÖзÖÒ³£»
ƽ³£Ð´Ó¦ÓóÌÐòµÄʱºò£¬±ÈÈçÓõÄÓïÑÔÊÇJava£¬ÓиöÁбíÒ³Ãæ£¬ÐèÒª¶ÔÊý¾Ý·ÖÒ³ÏÔʾ£»
ÕâÀïÒª·ÖÒ³ÄѵÀ²»ÐèÒª½èÖúJava£¬¶øÖ±½ÓsqlÄÜÖªµÀ·ÖÒ³Âð£¬ÆðÂëÒ²Òª´«¸öÒ³Âë½ ......
½«Ò»¸ö²éѯÓï¾ä¸³¸øÒ»¸ö±äÁ¿£¬ÈçÏ£º
DECLARE @STR NVARCHAR(MAX)
SET @STR='SELECT * from SALE_PROD'
ÔõôÑù²ÅÄÜÖ´ÐÐËüÄØ£¿
Çë¸ßÊÖ£¬ÈÊÐÖ£¬ÏÀ½ã°ï°ïæ°¡
¶àл£¬¿ÉÒÔÀ²£¬¸ßÊÖ°¡
Ö±½ÓÖ´ÐоÍÐÐÁË
exec ......