ÓÐûÓÐÕâÑùµÄsqlÓï¾ä - MS-SQL Server / »ù´¡Àà
±ÈÈçÎÒÖ»ÖªµÀproducts±íÀïÃæµÄÒ»¸ö×ֶΣºmodelºÅvarchar ÎÒÏë¸ÄÕâ¸ömodelºÅ¡£¿ÉÒÔÅúÁ¿¸üÐÂÂ𣿠sqlÓï¾äÔõôд
update products set model='12121212' SQL code: update products set model='ʵ¼ÊmodelºÅ' ÒýÓà SQL code update products set model='ʵ¼ÊmodelºÅ' ÎÒµÄÒâ˼ÊÇÕâÑùµÄ ±ÈÈ磺 ÖªµÀÓÐmodelºÅ£¨1¡¢2¡¢3¡£¡£¡££©ÎÒÏë°ÑmodelºÅÓÃÅúÁ¿µÄ¸Ä³Émodel£¨01¡¢02¡¢03¡£¡£¡££© ¸Äµ¥¸öÖ±½ÓÓà update products set products_model = '01' WHERE products_model = '1';¾ÍÐÐÁË ÎÒÏëÓÃÅúÁ¿µÄ ¿´Ðв»ÐÐ SQL code: update products set modele=stuff(model,1,0,'0')ÒýÓà SQL code update products set modele=stuff(model,1,0,'0') ÄãÕâ¸ö¹À¼Æ²»Ðаɡ£¡£Stuff(expression1_Str,startIndex,lengthInt,expression2_Str)º¯Êý¹²ÓÐËĸö²ÎÊý£¬Æä¹¦ÄÜÊǽ«expression1_StrÖÐ×ÔstartIndexλÖÃÆðɾ³ýlengthInt¸ö×Ö·û£¬È»ºó½«expression2²åÈëµ½ expression1_StrÖеÄstartIndexλÖá£ÒýÓà ÒýÓà 5 Â¥ v1ctory1216 µÄ»Ø¸´: SQL code update products set modele=stuff(model,1,0,'0') ÄãÕâ¸ö¹À¼Æ²»Ðаɡ£¡£Stuff(expression1_Str,startIndex,l
Ïà¹ØÎÊ´ð£º
tab1 ×Ö¶Î:billdate,goodsid,incount,inmoney,outcount,outmoney,endprice,endcount,endamt tab2 ×Ö¶Î:goodsid,goodskind£¨ÉÌÆ·ÀàÐÍ£© tab3 ×Ö¶Î:goodskind£¨ÉÌÆ·ÀàÐÍ£©,kindname ½á¹û£º µÃµ½ÉÌÆ·ÀàÐÍÔÚÒ»¶Îʱ¼ä ......
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 ......
ÕâÀïÏëÁ˽âÏ£¬¹ØÓÚSQL ServerÖзÖÒ³ºÍOracleÖзÖÒ³£» ƽ³£Ð´Ó¦ÓóÌÐòµÄʱºò£¬±ÈÈçÓõÄÓïÑÔÊÇJava£¬ÓиöÁбíÒ³Ãæ£¬ÐèÒª¶ÔÊý¾Ý·ÖÒ³ÏÔʾ£» ÕâÀïÒª·ÖÒ³ÄѵÀ²»ÐèÒª½èÖúJava£¬¶øÖ±½ÓsqlÄÜÖªµÀ·ÖÒ³Âð£¬ÆðÂëÒ²Òª´«¸öÒ³Âë½ ......
ͨ¹ýNAME×Ö¶ÎÌõ¼þ²éѯһ¸öÊý¾Ý±í£¬¼ÙÉèÎÒÓÐ100¸öÐÕÃû£¬ÓÐÒÔÏÂÁ½¸ö·½·¨£¬ ·½·¨1£º °Ñ100¸öName ×é³ÉÒ»¸öSQLÓï¾ä£¬±ÈÈç Select * from tmp_table where Name='ÕÅÈý' or Name ='ÀîËÄ' Or ...Or Name='µÚÒ»°Ù¸öÐÕÃû' ......
select o_customer,o_price from orders having o_price >=avg(o_price) select o_customer,o_price from orders where o_price >=(select avg(o_price) from orders) ÎҸоõûÓÐÇø±ð°¡£¬ÔõôÔÚmysql»áÓÐ ......