国产成人精品亚洲777人妖,欧美日韩精品一区视频,最新亚洲国产,国产乱码精品一区二区亚洲

您的位置:首頁(yè)技術(shù)文章
文章詳情頁(yè)

MS-SQL server數(shù)據(jù)庫(kù)開(kāi)發(fā)精典技巧

瀏覽:140日期:2023-10-30 08:43:34

1.按姓氏筆畫(huà)排序:Select * From TableName Order By CustomerName Collate Chinese_PRC_Stroke_ci_as

2.數(shù)據(jù)庫(kù)加密:select encrypt('原始密碼')select pwdencrypt('原始密碼')select pwdcompare('原始密碼','加密后密碼') = 1--相同;否則不相同 encrypt('原始密碼')select pwdencrypt('原始密碼')select pwdcompare('原始密碼','加密后密碼') = 1--相同;否則不相同

3.取回表中字段:declare @list varchar(1000),@sql nvarchar(1000) select @list=@list+','+b.name from sysobjects a,syscolumns b where a.id=b.id and a.name='表A'set @sql='select '+right(@list,len(@list)-1)+' from 表A' exec (@sql)

4.查看硬盤(pán)分區(qū):EXEC master..xp_fixeddrives

5.比較A,B表是否相等:if (select checksum_agg(binary_checksum(*)) from A) = (select checksum_agg(binary_checksum(*)) from B)print '相等'elseprint '不相等'

6.殺掉所有的事件探察器進(jìn)程:DECLARE hcforeach CURSOR GLOBAL FOR SELECT 'kill '+RTRIM(spid) FROM master.dbo.sysprocessesWHERE program_name IN('SQL profiler',N'SQL 事件探查器')EXEC sp_msforeach_worker '?''www.mypchelp.cn7.記錄搜索:開(kāi)頭到N條記錄Select Top N * From 表-------------------------------N到M條記錄(要有主索引ID)Select Top M-N * From 表 Where ID in (Select Top M ID From 表) Order by ID; Desc----------------------------------N到結(jié)尾記錄Select Top N * From 表 Order by ID Desc

8.如何修改數(shù)據(jù)庫(kù)的名稱(chēng):sp_renamedb 'old_name', 'new_name'

9:獲取當(dāng)前數(shù)據(jù)庫(kù)中的所有用戶(hù)表select Name from sysobjects where xtype='u' and status>=0

10:獲取某一個(gè)表的所有字段select name from syscolumns where id=object_id('表名')

11:查看與某一個(gè)表相關(guān)的視圖、存儲(chǔ)過(guò)程、函數(shù)select a.* from sysobjects a, syscomments b where a.id = b.id and b.text like '%表名%'

12:查看當(dāng)前數(shù)據(jù)庫(kù)中所有存儲(chǔ)過(guò)程select name as 存儲(chǔ)過(guò)程名稱(chēng) from sysobjects where xtype='P'

13:查詢(xún)用戶(hù)創(chuàng)建的所有數(shù)據(jù)庫(kù)select * from master..sysdatabases D where sid not in(select sid from master..syslogins where name='sa')或者select dbid, name AS DB_NAME from master..sysdatabases where sid <> 0x01

14:查詢(xún)某一個(gè)表的字段和數(shù)據(jù)類(lèi)型select column_name,data_type from information_schema.columnswhere table_name = '表名'

[n].[標(biāo)題]:Select * From TableName Order By CustomerName

[n].[標(biāo)題]:Select * From TableName Order By CustomerName

主站蜘蛛池模板: 白水县| 綦江县| 连平县| 惠水县| 三亚市| 即墨市| 神木县| 高平市| 易门县| 元氏县| 贵港市| 巩义市| 博客| 句容市| 古交市| 梨树县| 策勒县| 新兴县| 丹凤县| 娄烦县| 东港市| 萨嘎县| 稷山县| 临潭县| 长汀县| 英吉沙县| 庆云县| 宝清县| 汝州市| 濮阳县| 丹凤县| 绵阳市| 嘉善县| 灌南县| 正阳县| 大冶市| 万山特区| 甘南县| 抚州市| 高尔夫| 商城县|