SQL Server正确删除Windows认证用户的方法

USE [master]
GO

DROP LOGIN [xxx\xxxx]
GO

DECLARE @login_name sysname;
SET @login_name='GFG1\chenzhenh'

SELECT d.name AS database_name,
owner_sid AS owner_sid ,
l.name AS database_owner
FROM sys.databases d
LEFT JOIN sys.syslogins l ON l.sid = d.owner_sid
WHERE l.name=@login_name;



SELECT 'USE ' + d.name + CHAR(10) 
+ 'GO' + CHAR(10)
+ 'EXEC dbo.sp_changedbowner @loginame =N''sa'', @map = false' AS change_db_owner_cmd
FROM sys.databases d
LEFT JOIN sys.syslogins l ON l.sid = d.owner_sid
WHERE l.name = @login_name;


SELECT j.job_id AS JOB_ID 
,j.name AS JOB_NAME 
,CASE WHEN [enabled] =1 THEN 'Enabled'
ELSE 'Disabled' END AS JOB_ENABLED 
,l.name AS JOB_OWNER 
,j.category_id AS JOB_CATEGORY_ID
,c.name AS JOB_CATEGORY_NAME
,[description] AS JOB_DESCRIPTION 
,date_created AS DATE_CREATED 
,date_modified AS DATE_MODIFIED
FROM msdb.dbo.sysjobs j
INNER JOIN msdb.dbo.syscategories c ON j.category_id = c.category_id
INNER JOIN sys.syslogins l ON l.sid = j.owner_sid
WHERE l.name= @login_name
ORDER BY j.name



DECLARE @job_owner NVARCHAR(32);

SET @job_owner='sa';

SELECT 'EXEC msdb.dbo.sp_update_job @job_name=N''' +j.name + ''', @owner_login_name=N''' + RTRIM(LTRIM(@job_owner)) + ''';' AS change_job_owner_cmd
FROM msdb.dbo.sysjobs j
INNER JOIN msdb.dbo.syscategories c ON j.category_id = c.category_id
INNER JOIN sys.syslogins l ON l.sid = j.owner_sid
WHERE l.name = @login_name
ORDER BY j.name


SELECT '
USE [master]
GO
DROP LOGIN ' + QUOTENAME(@login_name) + 
'
GO
' AS drop_login_user;

DECLARE @database_id INT;
DECLARE @database_name sysname;
DECLARE @cmdText NVARCHAR(MAX);
DECLARE @prc_text NVARCHAR(MAX);
DECLARE @RowIndex INT;
DECLARE @user_name NVARCHAR(128);


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

CREATE TABLE #databases
(
database_id INT,
database_name sysname
)


INSERT INTO #databases
SELECT database_id ,
name
FROM sys.databases
WHERE name NOT IN ( 'master', 'tempdb', 'model', 'msdb',
'distribution', 'ReportServer',
'ReportServerTempDB', 'YourSQLDba' )
AND state = 0; --state_desc=ONLINE 


CREATE TABLE #removed_user
(
username sysname
)

--开始循环每一个用户数据库（排除了上面相关数据库）
WHILE 1= 1
BEGIN


SELECT TOP 1 @database_name= database_name 
FROM #databases
ORDER BY database_id;

IF @@ROWCOUNT =0 
BREAK;


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

SELECT @cmdText += 'INSERT INTO #removed_user
SELECT name FROM sys.sysusers
WHERE sid NOT IN (SELECT sid FROM sys.syslogins WHERE isntname=1 AND name LIKE ''GFG1%'')
AND isntname=1 AND name NOT IN (''NT AUTHORITY\SYSTEM'')' + CHAR(10);

EXEC SP_EXECUTESQL @cmdText

SELECT @database_name AS database_name;

SELECT j.job_id AS JOB_ID 
,j.name AS JOB_NAME 
,CASE WHEN [enabled] =1 THEN 'Enabled'
ELSE 'Disabled' END AS JOB_ENABLED 
,l.name AS JOB_OWNER 
,j.category_id AS JOB_CATEGORY_ID
,c.name AS JOB_CATEGORY_NAME
,[description] AS JOB_DESCRIPTION 
,date_created AS DATE_CREATED 
,date_modified AS DATE_MODIFIED
FROM msdb.dbo.sysjobs j
INNER JOIN msdb.dbo.syscategories c ON j.category_id = c.category_id
INNER JOIN sys.syslogins l ON l.sid = j.owner_sid
INNER JOIN #removed_user r ON l.name = r.username
ORDER BY j.name;


SELECT d.name AS database_name ,
l.name AS database_owner ,
d.create_date AS create_date ,
d.collation_name AS collcation_name ,
d.state_desc AS state_desc
FROM sys.databases d
INNER JOIN sys.syslogins l ON d.owner_sid = l.sid
INNER JOIN #removed_user r ON r.username = l.name


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

SET @cmdText += 'SELECT * FROM sys.schemas s
INNER JOIN #removed_user r ON s.name =r.username Collate Database_Default' + CHAR(10);

EXEC SP_EXECUTESQL @cmdText;


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

SET @cmdText += 'SELECT * FROM sys.objects WHERE schema_id IN (SELECT s.schema_id FROM sys.schemas s INNER JOIN #removed_user r ON s.name =r.username Collate Database_Default);'

EXEC SP_EXECUTESQL @cmdText;

SET @cmdText = 'USE ' + @database_name + ';' +CHAR(10)
SET @cmdText += 'SELECT ''USE ' + @database_name + ';'' + CHAR(10) +''GO'' + CHAR(10) +''ALTER AUTHORIZATION ON SCHEMA::'' +QUOTENAME(s.name) +'' TO [dbo];'' AS change_schema_cmd FROM sys.schemas s
INNER JOIN #removed_user r ON s.name =r.username Collate Database_Default ' + CHAR(10);

EXEC SP_EXECUTESQL @cmdText, N'@database_name sysname',@database_name ;

SET @cmdText = 'USE ' + @database_name + ';' +CHAR(10)
SET @cmdText += 'SELECT ''USE ' + @database_name + ';'' + CHAR(10) +''GO'' + CHAR(10) +''ALTER AUTHORIZATION ON SCHEMA::'' +QUOTENAME(s.SCHEMA_NAME) +'' TO [dbo];'' AS change_schema_cmd
FROM INFORMATION_SCHEMA.SCHEMATA s
INNER JOIN #removed_user r ON s.SCHEMA_OWNER =r.username Collate Database_Default' + CHAR(10);

EXEC SP_EXECUTESQL @cmdText, N'@database_name sysname',@database_name ;

SELECT 'USE ' + QUOTENAME(@database_name) + CHAR(10)
+ 'GO ' + CHAR(10)
+ 'DROP USER ' + QUOTENAME(username) +';' + CHAR(10)
+ 'GO' AS drop_user_cmd
FROM #removed_user;


TRUNCATE TABLE #removed_user;


DELETE FROM #databases WHERE database_name=@database_name;

END

DROP TABLE #databases;
DROP TABLE #removed_user;