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JScript code:

select * from mtab
select * from mtab where id=10
select * (select * from mmtab where id=10) where id=10
//È¡µÃ (select * from mmtab where id=10)
select * (select * from mmtab where (id=10 and zz=5)) where id=10
//È¡µÃ (select * fro ......

SQLÎĵÄÎÊÌâ - MS-SQL Server / Ó¦ÓÃʵÀý

select kes.k from  
(SELECT acct.KesKigo+acct.KesNo as ak from acct) as a,
(SELECT count(acct.KesKigo+acct.KesNo) as k from acct, fd_user where acct.ActNo = fd_user.ActNo 
 group by acct.KesKigo+acct.KesNo) as kes
where kes.k = a.ak
Õâ¸öSQL´íÔÚÄÄÄØ
Ö´Ðб¨µÄ´íÊÇ£º構ÎÄ´íÎ ......

mysqlÇøÃ»¸ßÊÖ - MS-SQL Server / »ù´¡Àà

ÎÒ¾õµÃmysqlºÍsqlserverÓй²Í¬µÄµØ·½£º
ÓиöÎÊÌâÊǹØÓÚ±íµÄËøÎÊÌ⣺
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select * from user where id in lock share mode£¨¹²ÏíËø)
  update user set name='55' where id=1£¨´ËÊ ......

ÇóÒ»¾äSQLÓï¾ä - MS-SQL Server / »ù´¡Àà

СµÜ×î½üºýÍ¿À²
  Ïò¸÷λÇë½ÌÒ»ÏÂ
  ÎÒÓÐÒ»Õűíst
  ×ֶΣº
  Id chengji
  ±íÖеÄÊý¾ÝÓУº
  1 ʤ
  2 ¸º
  1 ¸º
  1 ¸º
  ÎÒÏëµÃµ½ÕâÑùµÄ½á¹û;
  id ʤ ¸º
  ......

sql·ÖÒ³ÎÊÌâ - .NET¼¼Êõ / ASP.NET

select top 3 stuid from pagesize where stuid not in (select top 3 stuid from pagesize order by id asc) order by id ascÕâÀïµÄ·ÖÒ³sqlÓï¾äΪʲôҪ¼ÓÉÏÅÅÐòÄØ£¿²»ÅÅÐò²»ÐÐÂð£¿ÎÒ¿´µ½ºÜ¶àsqlÓï¾ä·ÖÒ³´úÂëÔÚÀ¨ºÅÍâÃæºÍÀïÃæ¶¼ÓÐÅÅÐò£¡ÄܾßÌå˵ÏÂʲôÂ𣿻òÕßÓÐÆäËûµÄÀý×ÓÀ´ËµÒ»Ï£¡£¿£¿
id stuid
1 1
2 2
3 2
......

SQL²éѯÎÊÌâ - MS-SQL Server / »ù´¡Àà

ÓÐÁ½¸ö±í
#TeacherPlan(TeacherID,CourseID)
Ö÷¼ü£ºTeacherID,CourseID
#CourseTable(TeacherID,CourseID,Times)
Ö÷¼ü£ºTeacherID,CourseID,Times
ÈçºÎËæ»úµÃµ½Ò»¸ö#TeacherPlan±íÖеÄTeacherID£¬ ʹµÃ#TeacherPlan±íÖжÔÓ¦µÄCourseID=¡¯1¡¯£¬²¢ÇÒ#CourseTable±íÖиÃTeacherIDµÄ×ܼǼÊý<a£¨aΪһ¸öÕûÊý£©
±ÈÈ磺 ......
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