在存储过程中使用数据库

I need to make a stored procedure which creates a user in more than one database. Something like this:

我需要创建一个存储过程，在多个数据库中创建一个用户。像这样的东西：

USE [database1]

CREATE USER [userLogin] FOR LOGIN [userLogin]

USE [database2]

CREATE USER [userLogin] FOR LOGIN [userLogin]

Since the CREATE USER statement does his job in the current database I need to use the USE statement to change between databases, but it can't be used inside stored procedures.

由于CREATE USER语句在当前数据库中完成其工作，因此我需要使用USE语句在数据库之间进行更改，但不能在存储过程中使用它。

How can I do this?

我怎样才能做到这一点？

6 个解决方案

#1

Dynamic SQL

动态SQL

CREATE PROCEDURE spTestProc
AS

EXEC ('USE [database1]; CREATE USER [userLogin] FOR LOGIN [userLogin]')

EXEC ('USE [database2]; CREATE USER [userLogin] FOR LOGIN [userLogin]')
GO

#2

SQL Server gives us a system stored procedure to do this. My understanding is that the recommended method would be to use sys.sp_grantdbaccess:

SQL Server为我们提供了一个系统存储过程来完成此任务。我的理解是推荐的方法是使用sys.sp_grantdbaccess：

CREATE PROCEDURE usp_CreateTwoUSers

AS
BEGIN

    -- Create a user for a login in the current DB:
    Exec sp_grantdbaccess [userLogin], [name_in_db];

    -- Create a user for a login in an external DB:
    Exec ExternalDatabaseName.sys.sp_grantdbaccess [userLogin], [name_in_db];

END

#3

CREATE PROCEDURE spTestProc
AS
BEGIN

EXECUTE sp_executesql N'USE DB1 SELECT * FROM TABLE1'


EXECUTE sp_executesql N'USE DB2 SELECT * FROM Table2'


END

exec spTestProc

now it is worked.

现在它已经奏效了。

#4

I did it like below:

我这样做如下：

Alter Procedure testProc
@dbName varchar(50)
As
declare @var varchar(100)
set @var = 'Exec(''create table tableName(name varchar(50))'')'    
Exec('Use '+ @dbName + ';' + @var)
Exec testProc 'test_db'

#5

Using sp_executesql seems to work, for more info see http://msdn.microsoft.com/en-us/library/ms175170.aspx

使用sp_executesql似乎有效，有关更多信息，请参阅http://msdn.microsoft.com/en-us/library/ms175170.aspx

I tested it using this and it worked fine:

我用它测试了它并且工作正常：

CREATE PROCEDURE spTestProc
AS
BEGIN

EXECUTE sp_executesql N'USE DB1;'

SELECT * FROM TABLE1
EXECUTE sp_executesql N'USE DB2;'

SELECT * FROM Table2

END

exec spTestProc

#6

It should be noted that if you want to use single quotes within a EXEC command, you will need to double the amount of single quotes

应该注意的是，如果要在EXEC命令中使用单引号，则需要将单引号的数量加倍

e.g.

例如

EXEC ('USE [database1]; select * from Authors where name = ''John'' ')

In this example, John has 2 single quotes before and after it. You cannot use double quotes for this type of query.

在这个例子中，John在它之前和之后有2个单引号。您不能对此类查询使用双引号。

#1