SQL Server·ÖÒ³3ÖÖ·½°¸
SQL Server·ÖÒ³3ÖÖ·½°¸±ÈÆ´
´Ë×ªÔØÔ´×ÔÀîºé¸ùµÄblog.×÷ÕßÊÇ΢ÈíµÄMVP!Ï£Íû´ó¼Ò²Î¿¼ÒÔÏÂ3ÖÖ·½°¸,°´Êµ¼ÊÇé¿öÑ¡Ôñ!
½¨Á¢±í£º
CREATE TABLE [TestTable] (
[ID] [int] IDENTITY (1, 1) NOT NULL ,
[FirstName] [nvarchar] (100) COLLATE Chinese_PRC_CI_AS NULL ,
[LastName] [nvarchar] (100) COLLATE Chinese_PRC_CI_AS NULL ,
[Country] [nvarchar] (50) COLLATE Chinese_PRC_CI_AS NULL ,
[Note] [nvarchar] (2000) COLLATE Chinese_PRC_CI_AS NULL
) ON [PRIMARY]
GO
²åÈëÊý¾Ý£º(2ÍòÌõ£¬Óøü¶àµÄÊý¾Ý²âÊÔ»áÃ÷ÏÔһЩ)
SET IDENTITY_INSERT TestTable ON
declare @i int
set @i=1
while @i<=20000
begin
insert into TestTable([id], FirstName, LastName, Country,Note) values(@i, 'FirstName_XXX','LastName_XXX','Country_XXX','Note_XXX')
set @i=@i+1
end
SET IDENTITY_INSERT TestTable OFF
-------------------------------------
·ÖÒ³·½°¸Ò»£º(ÀûÓÃNot InºÍSELECT TOP·ÖÒ³)
Óï¾äÐÎʽ£º
SELECT TOP 10 *
from TestTable
WHERE (ID NOT IN
(SELECT TOP 20 id
from TestTable
ORDER BY id))
ORDER BY ID
SELECT TOP Ò³´óС *
from TestTable
WHERE (ID NOT IN
(SELECT TOP Ò³´óС*Ò³Êý id
from ±í
ORDER BY id))
ORDER BY ID
-------------------------------------
·ÖÒ³·½°¸¶þ£º(ÀûÓÃID´óÓÚ¶àÉÙºÍSELECT TOP·ÖÒ³£©
Óï¾äÐÎʽ£º
SELECT TOP 10 *
from TestTable
WHERE (ID >
(SELECT MAX(id)
from (SELECT TOP 20 id
from TestTable
ORDER BY
Ïà¹ØÎĵµ£º
PL/SQL×î²îʵ¼ù
http://benben.javaeye.com/blog/278164
1. ³¬³¤µÄPL/SQL´úÂë
Ó°Ï죺¿Éά»¤ÐÔ£¬ÐÔÄÜ
Ö¢×´£º
ÔÚ¸´ ......
ALTER function [dbo].[split]
(
@SourceSql varchar(8000),
@StrSeprate varchar(10)
)
returns @temp table(F1 varchar(100))
as
begin
declare @i int
set @SourceSql = rtrim(ltrim(@SourceSql))
set @i = charindex(@StrSeprate,@SourceSql)
while @i >= 1
begin
if len( ......
Ò»¡¢»ù´¡
1¡¢ËµÃ÷£º´´½¨Êý¾Ý¿â
CREATE DATABASE database-name
2¡¢ËµÃ÷£ºÉ¾³ýÊý¾Ý¿â
drop database dbname
3¡¢ËµÃ÷£º±¸·Ýsql server
--- ´´½¨ ±¸·ÝÊý¾ÝµÄ device
USE master
EXEC sp_addumpdevice 'disk', 'testBack', 'c:\mssql7backup\MyNwind_1.dat'
--- ¿ªÊ¼ ±¸·Ý
BACKUP DATABASE pubs TO testBack
4¡¢Ë ......
SELECT SERVERPROPERTY('productversion'), SERVERPROPERTY ('productlevel'), SERVERPROPERTY ('edition')
productversion£º²úÆ·°æ±¾£¨ÀýÈ磬10.0.1600.22£©
productlevel£º²úÆ·¼¶±ð£¨ÀýÈ磬RTM£©
edition£º°æ±¾£¨ÀýÈ磬 Enterprise£¨ÆóÒµ°æ£©¡¢Developer Edition£¨¿ª·¢°æ£©£©
SELECT @@VERSION
΢Èí¾ßÌå˵Ã÷£º
......
ÔÚÐÔÄÜÉÏ£¬mysqlÊÇÏ൱³öÉ«µÄ£¬×ÀÃæ¸ñʽmyisamÊý¾Ý¿âÓë´ÅÅ̷dz£µØ¼æÈݶø²»Õ¼Óùý¶àµÄcpuºÍÄڴ棬mysqlÄÚ²¿ºÜ¶àʱºò¶¼Ê¹ÓÃ64λÕûÊý´¦Àí¡£yahoo¾ÍʹÓÃmysqlºǫ́Êý¾Ý¿â¡£
µ«mysqlȱÉÙһЩ¸½¼Ó¹¦ÄÜ£¬Ã»ÓÐSqlServerÈ«Ãæ¡£
sqlserverÎȶ¨ÐÍÇ¿£¬µ«±ØÐëÔö¼Ó¶îÍ⸴ÔÓ²Ù×÷£¬´ÅÅÌ´æ´¢£¬ÄÚ´æËðºÄµÈ£¬¶ÔÓ²¼þÈí¼þÒªÇ󶼺ܸߡ£
ÕâÁ½¸öÊý ......