在SQL Server数据库中如何查看一个登录名(login)的具体权限呢,如果使用SSMS的UI界面查看登录名的具体权限的话,用户数据库非常多的话,要梳理完它所有的权限,操作又耗时又麻烦,个人十分崇尚简洁、高效的方法,反感那些需要大量手工操作的UI界面操作方式,哪怕就是脚本,如果不能一次搞定,手工多操作几次(例如,切换数据库),都是不可接受的。最近遇到这个需求,就完善了一下之前的脚本get_login_rights_script.sql,输入登录名参数,将这个登录名所拥有的服务器角色、数据库角色、以及所授予具体对象的相关权限使用脚本查询出来,脚本分享如下:

--==================================================================================================================

--        ScriptName            :            get_login_rights_script.sql

--        Author                :            潇湘隐者    

--        CreateDate            :            2015-12-18

--        Description           :            查看某个登录名被授予的数据库对象的权限的脚本(授权脚本和回收权限脚本)

--        Note                  :             

/******************************************************************************************************************

        Parameters              :                                    参数说明

********************************************************************************************************************

            @login_name         :            你要查看权限的登录名(需要输入替换的参数)

********************************************************************************************************************

   Modified Date    Modified User     Version                 Modified Reason

********************************************************************************************************************

    2018-08-03        潇湘隐者         V01.00.00        新建该脚本。

    2019-04-04        潇湘隐者         V01.01.00        Fix掉一个bug,某个表只允许更新某个字段,但是这里显示更新整个表。

    2019-09-25        潇湘隐者         V01.02.00        解决只能查看某个用户数据库,不能查看所有数据库的权限问题。

    2019-09-25        潇湘隐者         V01.03.00        解决数据库名包含中划线[-], 出现下面错误问题


-------------------------------------------------------------------------------------------------------------------

Msg 911, Level 16, State 1, Line 1

Database 'xxxx' does not exist. Make sure that the name is entered correctly.

-------------------------------------------------------------------------------------------------------------------

   2019-09-26         潇湘隐者         V01.04.00        解决系统表和系统视图大小写问题(排序规则区分大小时,会报错)

   2019-09-26         潇湘隐者         V01.04.00        加入数据库角色详细信息


*******************************************************************************************************************/

 

DECLARE @login_name     NVARCHAR(32)= 'test1';

DECLARE @database_name  NVARCHAR(64);

DECLARE @cmdText        NVARCHAR(MAX);

 

 

IF OBJECT_ID('TempDB.dbo.#databases') IS NOT NULL

    DROP TABLE dbo.#databases;

 

CREATE TABLE #databases

(

    database_id     INT,

    database_name   sysname

);

 

IF OBJECT_ID('tempdb.dbo.#user_db_roles') IS NOT NULL 

    DROP TABLE dbo.#user_db_roles;

 

 

CREATE TABLE dbo.#user_db_roles

(

     [DB_NAME]                NVARCHAR(64)

    ,[USER_NAME]              NVARCHAR(64)

    ,[ROLE_NAME]              NVARCHAR(64)

    ,[PRINCIPAL_TYPE_DESC]    NVARCHAR(64)

    ,[CLASS_DESC]             NVARCHAR(64)

    ,[PERMISSION_NAME]        NVARCHAR(64)

    ,[OBJECT_NAME]            NVARCHAR(128)

    ,[PERMISSION_STATE_DESC]  NVARCHAR(128)

);

 

IF OBJECT_ID('tempdb.dbo.#user_object_rights') IS NOT NULL

    DROP TABLE dbo.#user_object_rights;

 

CREATE TABLE dbo.#user_object_rights

(    

    [DATABASE_NAME]        NVARCHAR(128),

    [SCHEMA_NAME]          NVARCHAR(64),

    [OBJECT_NAME]          NVARCHAR(128),

    [USER_NAME]            NVARCHAR(32),

    [PERMISSIONS_TYPE]     CHAR(12),

    [PERMISSION_NAME]      NVARCHAR(128),

    [PERMISSION_STATE]     NVARCHAR(64),

    [CLASS_DESC]           NVARCHAR(64),

    [COLUMN_NAME]          NVARCHAR(32),

    [STATE_DESC]           NVARCHAR(64),

    [GRANT_STMT]           NVARCHAR(MAX),

    [REVOKE_STMT]          NVARCHAR(MAX)

)

 

INSERT  INTO #databases

SELECT  database_id ,

        name

FROM    sys.databases

WHERE name NOT IN ('model') AND state = 0; --state_desc=ONLINE 

 

 

--登录名授予的服务器角色

SELECT  UserName          = u.name ,

        ServerRole        = g.name ,

        Type              = u.type,

        Type_Desc         = u.Type_Desc,

        Create_Date       = u.create_date,

        Modify_Date       = u.modify_date, 

        DenyLogin         = l.denylogin

FROM    sys.server_role_members m

        INNER JOIN sys.server_principals g ON g.principal_id = m.role_principal_id

        INNER JOIN sys.server_principals u ON u.principal_id = m.member_principal_id

        INNER JOIN sys.syslogins l ON u.name = l.name

WHERE l.name=@login_name

ORDER BY u.name,g.name;

 

 

WHILE 1= 1

BEGIN

 

 

    SELECT TOP 1 @database_name= database_name   

    FROM #databases

    ORDER BY database_id;

 

    IF @@ROWCOUNT =0 

        BREAK;

 

 

    SET @cmdText =  N'USE ' + QUOTENAME(@database_name) + N';' +CHAR(10)

 

    --登录名授予的数据库角色

    /********************************************************************************

    SELECT @cmdText += N'INSERT INTO #user_db_roles

                        SELECT  DB_NAME()     AS [DB_NAME]

                               ,M.NAME        AS [USER_NAME]

                               ,R.NAME        AS [ROLE_NAME]

                        FROM    sys.database_role_members RM

                                INNER JOIN sys.database_principals R ON RM.ROLE_PRINCIPAL_ID = R.PRINCIPAL_ID

                                INNER JOIN sys.database_principals M ON RM.MEMBER_PRINCIPAL_ID = M.PRINCIPAL_ID

                        WHERE M.NAME=@p_login_name' + CHAR(10);

    

    EXEC SP_EXECUTESQL @cmdText, N'@p_login_name NVARCHAR(32)',@p_login_name=@login_name;

    ***********************************************************************************/

    SELECT @cmdText += N'INSERT INTO #user_db_roles

                       SELECT  DB_NAME() AS [DB_NAME] ,

                               u.name AS [USER_NAME] ,

                               r.name AS [ROLE_NAME] ,

                               t.[PRINCIPAL_TYPE_DESC] ,

                               t.[CLASS_DESC] ,

                               t.[PERMISSION_NAME] ,

                               t.[OBJECT_NAME] ,

                               t.PERMISSION_STATE_DESC

                       FROM    sys.database_role_members AS m

                               INNER JOIN sys.database_principals AS r ON r.principal_id = m.role_principal_id

                               INNER JOIN sys.database_principals AS u ON u.principal_id = m.member_principal_id

                               LEFT JOIN ( SELECT  USER_NAME(p.grantee_principal_id) AS principal_name ,

                                                   dp.type_desc AS PRINCIPAL_TYPE_DESC ,

                                                   p.class_desc AS CLASS_DESC ,

                                                   p.permission_name AS [PERMISSION_NAME] ,

                                                   OBJECT_NAME(p.major_id) AS [OBJECT_NAME] ,

                                                   p.state_desc AS [PERMISSION_STATE_DESC]

                                           FROM    sys.database_permissions p

                                                   INNER JOIN sys.database_principals dp ON p.grantee_principal_id = dp.principal_id

                                         ) t ON t.principal_name = r.name

                       WHERE   u.name = @p_login_name;' + CHAR(10);

    

    EXEC SP_EXECUTESQL @cmdText, N'@p_login_name NVARCHAR(32)',@p_login_name=@login_name;

 

    SET @cmdText =  N'USE ' +QUOTENAME(@database_name)  + N';' +CHAR(10);

 

    --查看具体对象的授权问题

    SELECT @cmdText +=N'INSERT INTO dbo.#user_object_rights

                        (    [DATABASE_NAME]        ,

                            [SCHEMA_NAME]           ,

                            [OBJECT_NAME]           ,

                            [USER_NAME]             ,

                            [PERMISSIONS_TYPE]      ,

                            [PERMISSION_NAME]       ,

                            [PERMISSION_STATE]      ,

                            [CLASS_DESC]            ,

                            [COLUMN_NAME]           ,

                            [STATE_DESC]            ,

                            [GRANT_STMT]            ,

                            [REVOKE_STMT]        

                        )

                        SELECT DB_NAME()                    AS  [DATABASE_NAME]

                             , sys.schemas.NAME             AS  [SCHEMA_NAME]

                             , ob.NAME                      AS  [OBJECT_NAME]

                             , sys.database_principals.NAME AS  [USER_NAME]

                             , dp.TYPE                      AS  [PERMISSIONS_TYPE]

                             , dp.PERMISSION_NAME           AS  [PERMISSION_NAME]

                             , dp.STATE                     AS  [PERMISSION_STATE]

                             , dp.CLASS_DESC                AS  [CLASS_DESC]

                             , sc.name                      AS  [COLUMN_NAME]

                             , dp.STATE_DESC                AS  [STATE_DESC]

                             , dp.STATE_DESC + '' '' + dp.PERMISSION_NAME + '' ON [''+ sys.schemas.NAME + ''].['' + ob.NAME + ''] TO ['' + sys.database_principals.NAME + ''];'' COLLATE LATIN1_GENERAL_CI_AS 

                                                            AS  [GRANT_STMT] 

                             , ''REVOKE '' + dp.PERMISSION_NAME + '' ON [''+ sys.schemas.NAME + ''].['' + ob.NAME + ''] FROM ['' + sys.database_principals.NAME + ''];'' COLLATE LATIN1_GENERAL_CI_AS 

                                                            AS  [REVOKE_STMT]

                        FROM sys.database_permissions  dp

                        LEFT OUTER JOIN sys.objects  ob ON dp.MAJOR_ID = ob.OBJECT_ID 

                        LEFT OUTER JOIN sys.schemas ON  ob.SCHEMA_ID = sys.schemas.SCHEMA_ID 

                        LEFT OUTER JOIN sys.database_principals ON dp.GRANTEE_PRINCIPAL_ID = sys.database_principals.PRINCIPAL_ID 

                        LEFT OUTER JOIN sys.columns sc ON ob.object_id = sc.object_id AND sc.column_id = dp.minor_id

                        WHERE sys.database_principals.NAME =@p_login_name

                        ORDER BY PERMISSIONS_TYPE;'

 

    --PRINT(@cmdText);

    EXEC SP_EXECUTESQL @cmdText, N'@p_login_name NVARCHAR(32)',@p_login_name=@login_name;

 

    DELETE FROM #databases WHERE database_name=@database_name;

END

 

SELECT * FROM tempdb.dbo.#user_db_roles;

SELECT * FROM tempdb.dbo.#user_object_rights;

 

 

IF OBJECT_ID('TempDB.dbo.#databases') IS NOT NULL

    DROP TABLE dbo.#databases;

IF OBJECT_ID('tempdb.dbo.#user_db_roles') IS NOT NULL 

    DROP TABLE dbo.#user_db_roles;

IF OBJECT_ID('tempdb.dbo.#user_object_rights') IS NOT NULL

    DROP TABLE dbo.#user_object_rights;

---------------------------------------------------------------分割线-------------------------------------------------------------------------------

最近在使用过程中,发现这个SQL漏掉了查询登录名所授予的服务器级权限,今天有空,特此补充,修改一下这篇博客的内容。

--==================================================================================================================

--        ScriptName            :            get_login_rights_script.sql

--        Author                :            潇湘隐者    

--        CreateDate            :            2015-12-18

--        Description           :            查看某个登录名被授予的数据库对象的权限的脚本(授权脚本和回收权限脚本)

--        Note                  :            

/*******************************************************************************************************************

        Parameters            :                                    参数说明

********************************************************************************************************************

            @login_name       :            你要查看权限的登录名(需要输入替换的参数)

********************************************************************************************************************

        Notice                :            由于系统视图的缺陷,此脚本无法显示服务器角色public、数据库角色public

********************************************************************************************************************

   Modified Date    Modified User     Version                 Modified Reason

********************************************************************************************************************

    2018-08-03        潇湘隐者         V01.00.00        新建该脚本。

    2019-04-04        潇湘隐者         V01.01.00        Fix掉一个bug,某个表只允许更新某个字段,但是这里显示更新整个表。

    2019-09-25        潇湘隐者         V01.02.00        解决只能查看某个用户数据库,不能查看所有数据库的权限问题。

    2019-09-25        潇湘隐者         V01.03.00        解决数据库名包含中划线[-], 出现下面错误问题

    2019-09-26        潇湘隐者         V01.04.00        解决系统表和系统视图大小写问题(排序规则区分大小时,会报错)

    2019-09-26        潇湘隐者         V01.04.00        加入数据库角色详细信息

    2019-11-22        潇湘隐者         V01.04.00        解决SQL不能查询到授予的服务器级权限的Bug

*******************************************************************************************************************/

--==================================================================================================================

 

DECLARE @login_name     NVARCHAR(32)= 'test';

DECLARE @database_name  NVARCHAR(64);

DECLARE @cmdText        NVARCHAR(MAX);

 

 

IF OBJECT_ID('TempDB.dbo.#databases') IS NOT NULL

    DROP TABLE dbo.#databases;

 

CREATE TABLE #databases

(

    database_id        INT,

    database_name      sysname

);

 

IF OBJECT_ID('tempdb.dbo.#user_db_roles') IS NOT NULL 

    DROP TABLE dbo.#user_db_roles;

 

--CREATE TABLE dbo.#user_db_roles

--(

--     [DB_NAME]      NVARCHAR(64)

--    ,[USER_NAME]    NVARCHAR(64)

--    ,[ROLE_NAME]    NVARCHAR(64)

--);

CREATE TABLE dbo.#user_db_roles

(

     [DB_NAME]                NVARCHAR(64)

    ,[USER_NAME]              NVARCHAR(64)

    ,[ROLE_NAME]              NVARCHAR(64)

    ,[PRINCIPAL_TYPE_DESC]    NVARCHAR(64)

    ,[CLASS_DESC]             NVARCHAR(64)

    ,[PERMISSION_NAME]        NVARCHAR(64)

    ,[OBJECT_NAME]            NVARCHAR(128)

    ,[PERMISSION_STATE_DESC]  NVARCHAR(128)

);

 

IF OBJECT_ID('tempdb.dbo.#user_object_rights') IS NOT NULL

    DROP TABLE dbo.#user_object_rights;

 

CREATE TABLE dbo.#user_object_rights

(    

    [DATABASE_NAME]        NVARCHAR(128),

    [SCHEMA_NAME]          NVARCHAR(64),

    [OBJECT_NAME]          NVARCHAR(128),

    [USER_NAME]            NVARCHAR(32),

    [PERMISSIONS_TYPE]     CHAR(12),

    [PERMISSION_NAME]      NVARCHAR(128),

    [PERMISSION_STATE]     NVARCHAR(64),

    [CLASS_DESC]           NVARCHAR(64),

    [COLUMN_NAME]          NVARCHAR(32),

    [STATE_DESC]           NVARCHAR(64),

    [GRANT_STMT]           NVARCHAR(MAX),

    [REVOKE_STMT]          NVARCHAR(MAX)

)

 

INSERT  INTO #databases

SELECT  database_id ,

        name

FROM    sys.databases

WHERE name NOT IN ('model') AND state = 0; --state_desc=ONLINE 

 

 

--登录名授予的服务器角色

SELECT  UserName        = u.name ,

        ServerRole      = g.name ,

        Type            = u.type,

        Type_Desc       = u.Type_Desc,

        Create_Date     = u.create_date,

        Modify_Date     = u.modify_date, 

        DenyLogin       = l.denylogin

FROM    sys.server_role_members m

        INNER JOIN sys.server_principals g ON g.principal_id = m.role_principal_id

        INNER JOIN sys.server_principals u ON u.principal_id = m.member_principal_id

        INNER JOIN sys.syslogins l ON u.name = l.name

WHERE l.name=@login_name

ORDER BY u.name,g.name;

 

 

--登录名授予的服务器级权限

SELECT  grantor_principal.name  AS [Grantor] ,

        prmssn.state            AS [PermissionState] ,

        prmssn.state_desc       AS [PermissionStateDesc],    

        prmssn.type             AS [PermissionCode] ,

        prmssn.permission_name  AS [PermissionName]

FROM    sys.server_permissions AS prmssn

        INNER JOIN sys.server_principals AS grantor_principal ON grantor_principal.principal_id = prmssn.grantor_principal_id

        INNER JOIN sys.server_principals AS grantee_principal ON grantee_principal.principal_id = prmssn.grantee_principal_id

WHERE   grantee_principal.name = @login_name

ORDER BY [PermissionName] DESC;

 

WHILE 1= 1

BEGIN

 

 

    SELECT TOP 1 @database_name= database_name   

    FROM #databases

    ORDER BY database_id;

 

    IF @@ROWCOUNT =0 

        BREAK;

 

 

    SET @cmdText =  N'USE ' + QUOTENAME(@database_name) + N';' +CHAR(10)

 

    --登录名授予的数据库角色

    /********************************************************************************

    SELECT @cmdText += N'INSERT INTO #user_db_roles

                        SELECT  DB_NAME()   AS [DB_NAME]

                               ,M.NAME        AS [USER_NAME]

                               ,R.NAME        AS [ROLE_NAME]

                        FROM    sys.database_role_members RM

                                INNER JOIN sys.database_principals R ON RM.ROLE_PRINCIPAL_ID = R.PRINCIPAL_ID

                                INNER JOIN sys.database_principals M ON RM.MEMBER_PRINCIPAL_ID = M.PRINCIPAL_ID

                        WHERE M.NAME=@p_login_name' + CHAR(10);

    

    EXEC SP_EXECUTESQL @cmdText, N'@p_login_name NVARCHAR(32)',@p_login_name=@login_name;

    ***********************************************************************************/

    SELECT @cmdText += N'INSERT INTO #user_db_roles

                       SELECT  DB_NAME() AS [DB_NAME] ,

                               u.name AS [USER_NAME] ,

                               r.name AS [ROLE_NAME] ,

                               t.[PRINCIPAL_TYPE_DESC] ,

                               t.[CLASS_DESC] ,

                               t.[PERMISSION_NAME] ,

                               t.[OBJECT_NAME] ,

                               t.PERMISSION_STATE_DESC

                       FROM    sys.database_role_members AS m

                               INNER JOIN sys.database_principals AS r ON r.principal_id = m.role_principal_id

                               INNER JOIN sys.database_principals AS u ON u.principal_id = m.member_principal_id

                               LEFT JOIN ( SELECT  USER_NAME(p.grantee_principal_id) AS principal_name ,

                                                   dp.type_desc AS PRINCIPAL_TYPE_DESC ,

                                                   p.class_desc AS CLASS_DESC ,

                                                   p.permission_name AS [PERMISSION_NAME] ,

                                                   OBJECT_NAME(p.major_id) AS [OBJECT_NAME] ,

                                                   p.state_desc AS [PERMISSION_STATE_DESC]

                                           FROM    sys.database_permissions p

                                                   INNER JOIN sys.database_principals dp ON p.grantee_principal_id = dp.principal_id

                                         ) t ON t.principal_name = r.name

                       WHERE   u.name = @p_login_name;' + CHAR(10);

    

    EXEC SP_EXECUTESQL @cmdText, N'@p_login_name NVARCHAR(32)',@p_login_name=@login_name;

 

    SET @cmdText =  N'USE ' +QUOTENAME(@database_name)  + N';' +CHAR(10);

 

    --查看具体对象的授权问题

    SELECT @cmdText +=N'INSERT INTO dbo.#user_object_rights

                        (    [DATABASE_NAME]        ,

                            [SCHEMA_NAME]        ,

                            [OBJECT_NAME]        ,

                            [USER_NAME]            ,

                            [PERMISSIONS_TYPE]    ,

                            [PERMISSION_NAME]    ,

                            [PERMISSION_STATE]    ,

                            [CLASS_DESC]        ,

                            [COLUMN_NAME]        ,

                            [STATE_DESC]        ,

                            [GRANT_STMT]        ,

                            [REVOKE_STMT]        

                        )

                        SELECT DB_NAME()                    AS  [DATABASE_NAME]

                             , sys.schemas.NAME                AS  [SCHEMA_NAME]

                             , ob.NAME                        AS    [OBJECT_NAME]

                             , sys.database_principals.NAME AS    [USER_NAME]

                             , dp.TYPE                        AS  [PERMISSIONS_TYPE]

                             , dp.PERMISSION_NAME            AS    [PERMISSION_NAME]

                             , dp.STATE                        AS    [PERMISSION_STATE]

                             , dp.CLASS_DESC                AS    [CLASS_DESC]

                             , sc.name                        AS  [COLUMN_NAME]

                             , dp.STATE_DESC                AS    [STATE_DESC]

                             , dp.STATE_DESC + '' '' + dp.PERMISSION_NAME + '' ON [''+ sys.schemas.NAME + ''].['' + ob.NAME + ''] TO ['' + sys.database_principals.NAME + ''];'' COLLATE LATIN1_GENERAL_CI_AS 

                                                            AS  [GRANT_STMT] 

                             , ''REVOKE '' + dp.PERMISSION_NAME + '' ON [''+ sys.schemas.NAME + ''].['' + ob.NAME + ''] FROM ['' + sys.database_principals.NAME + ''];'' COLLATE LATIN1_GENERAL_CI_AS 

                                                            AS  [REVOKE_STMT]

                        FROM sys.database_permissions  dp

                        LEFT OUTER JOIN sys.objects  ob ON dp.MAJOR_ID = ob.OBJECT_ID 

                        LEFT OUTER JOIN sys.schemas ON  ob.SCHEMA_ID = sys.schemas.SCHEMA_ID 

                        LEFT OUTER JOIN sys.database_principals ON dp.GRANTEE_PRINCIPAL_ID = sys.database_principals.PRINCIPAL_ID 

                        LEFT OUTER JOIN sys.columns sc ON ob.object_id = sc.object_id AND sc.column_id = dp.minor_id

                        WHERE sys.database_principals.NAME =@p_login_name

                        ORDER BY PERMISSIONS_TYPE;'

 

    --PRINT(@cmdText);

    EXEC SP_EXECUTESQL @cmdText, N'@p_login_name NVARCHAR(32)',@p_login_name=@login_name;

 

    DELETE FROM #databases WHERE database_name=@database_name;

END

 

SELECT * FROM tempdb.dbo.#user_db_roles ORDER BY DB_NAME;

SELECT * FROM tempdb.dbo.#user_object_rights ORDER BY DATABASE_NAME;

 

 

IF OBJECT_ID('TempDB.dbo.#databases') IS NOT NULL

    DROP TABLE dbo.#databases;

IF OBJECT_ID('tempdb.dbo.#user_db_roles') IS NOT NULL 

    DROP TABLE dbo.#user_db_roles;

IF OBJECT_ID('tempdb.dbo.#user_object_rights') IS NOT NULL

    DROP TABLE dbo.#user_object_rights;

SQL Server查看login所授予的具体权限的更多相关文章

  1. SQL SERVER 查看mdf ldf文件路径

    SQL SERVER 查看mdf ldf文件路径 select filename from sysfiles

  2. sql server 查看对象最后修改时间

    sql server 查看对象最后修改时间,根据最后修改时间排序 存储过程 SELECT * FROM sys.all_objects WHERE  TYPE='P' ORDER BY modify_ ...

  3. SQL Server查看库、表占用空间大小

    转自:https://blog.csdn.net/yenange/article/details/50493580 查询数据文件与日志文件占用情况,查看数据大小,查看库大小 1. 查看数据文件占用(权 ...

  4. Sql Server 查看存储过程最后修改时间

    Sql Server 查看存储过程最后修改时间 select * from sys.procedures order by modify_date desc

  5. SQL Server查看Sql语句执行的耗时和IO消耗

    原文:SQL Server查看Sql语句执行的耗时和IO消耗 在做系统过程中,经常需要针对某些场景进行性能优化,那么如何判定性能优化的效果呢?肯定需要知道优化之前Sql语句的耗时和优化之后Sql语句的 ...

  6. 理解SQL Server的查询内存授予(译)

    此文描述查询内存授予(query memory grant)在SQL Server上是如何工作的,适用于SQL 2005 到2008. 查询内存授予(下文缩写为QMG)是用于存储当数据进行排序和连接时 ...

  7. SQL Server 查看表定义的 2 种方法

    方法 1. 用SQL Server Management Studio 第一步找到要查看的表,右键 第二步点设计 方法 2. sp_help @objname = 'tableName' execut ...

  8. SQL Server 查看对象之间的引用关系

    前期准备: use studioA;           go create table T(X int,Y int); insert into T(X,Y) values(1,1),(2,2);  ...

  9. SQL Server查看索引重建、重组索引进度

    相信很多SQL Server DBA或开发人员在重建或重组大表索引时,都会相当郁闷,不知道索引重建的进度,这个对于DBA完全是一个黑盒子,对于系统负载非常大的系统或维护窗口较短的系统,你会遇到一些挑战 ...

随机推荐

  1. nitacm第十六届浙江大学宁波理工学院程序设计大赛总结

    校赛时间:2019.11.30周六下午12:00-16:00 重现赛链接:https://ac.nowcoder.com/acm/contest/2995#question 体验: 11点多到达石鳞大 ...

  2. CSU oj 2092-Space Golf

    You surely have never heard of this new planet surface exploration scheme, as it is being carried ou ...

  3. SpringMvc 跨域处理

    导读 由于浏览器对于JavaScript的同源策略的限制,导致A网站(Ajax请求)不能通过JS去访问B网站的数据,于是跨域问题就出现了. 跨域指的是域名.端口.协议的组合不同就是跨域. http:/ ...

  4. 2.成产出现 max(vachar2)取值问题

    uat 测试结果正确max(9)>max(8),结果生产出现 max(9)>max(12) 原因:字符类型,默认比较第一个字符的ASCII码. 解决方式: max(to_number(va ...

  5. 10分钟理解BFC原理

    10 分钟理解 BFC 原理 一.常见定位方案 在讲 BFC 之前,我们先来了解一下常见的定位方案,定位方案是控制元素的布局,有三种常见方案: 普通流 (normal flow) 在普通流中,元素按照 ...

  6. js重学

    js重学 数据类型 基本数据类型: Undefined.Null.Number.Boolean.String 复杂数据类型:Object Object:由一组无序键值对组成 typeof 未定义--u ...

  7. 【Java笔试】对数据库中的分解是否为无损连接和是否保持函数依赖的判定-由牛客网试题引申-保姆式教学

    [牛客网数据库原理题目]设关系模式R(A,B,C),F是R上成立的FD集,F={A→B,C→B},ρ={AB,AC}是R的一个分解,那么分解ρ()? 正确答案:C你的答案:A(错误) ( A ) 保持 ...

  8. NodeJS2-4环境&调试----global变量

    global全局对象,希望把全局访问到的对象,属性和方法等挂到global对象上,除了用户自定义的方法外,global本身默认带着一些常用的属性和方法的 CommonJS Buffer.process ...

  9. docker 常用命令 以及常见问题

    常见命令 windos 在搜索框 输入 windows powershell,打开.然后输入以下命令#查看镜像列表 docker images ls #删除单个镜像 docker rmi image- ...

  10. SpringMVC生成的验证码图片不显示

    近期用SSM框架写一个项目,登录模块需要生成验证码图片,我把相关的代码写好了之后传到 jsp ,但是图片不显示,查看控制台显示404,反复查询了一下代码并没有发现任何问题,代码如下: @Control ...