在SQL Server中,如何在任何位置引用列？

Question

在我相当大的数据库中,我想知道在整个模式(SP,函数,表,触发器......)中引用列的所有地方.我不想只进行文本搜索,因为这将获取注释,并且还会从其他表中找到类似命名的列.

有谁知道我是否可以这样做？我使用SQL Server 2008.

Answer 1

警告:即使这是一种文本搜索方法,我要分享的脚本也为我节省了很多时间.它在里面搜索:

• 标量函数
• 表值函数
• 存储过程
• 意见
• 触发器

我需要指定一个排序规则,以使其适用于我.

SELECT sys.objects.object_id, sys.schemas.name AS [Schema], sys.objects.name AS Object_Name, sys.objects.type_desc AS [Type]
FROM sys.sql_modules (NOLOCK) 
INNER JOIN sys.objects (NOLOCK) ON sys.sql_modules.object_id = sys.objects.object_id 
INNER JOIN sys.schemas (NOLOCK) ON sys.objects.schema_id = sys.schemas.schema_id
WHERE
    sys.sql_modules.definition COLLATE SQL_Latin1_General_CP1_CI_AS LIKE '%{Column Name}%' ESCAPE '\'
ORDER BY sys.objects.type_desc, sys.schemas.name, sys.objects.name

输出如下:

更新:如果您需要搜索某个表,SP等,您可以使用更专业的查询:

DECLARE @SCHEMA_NAME VARCHAR(100) = 'dbo';
DECLARE @OBJECT_NAME  VARCHAR(100) = 'MY_OBJECT';

SELECT
    sys.objects.object_id,
    sys.schemas.name AS [Schema], 
    sys.objects.name AS Object_Name, 
    sys.objects.type_desc AS [Type]
FROM sys.sql_modules (NOLOCK) 
INNER JOIN sys.objects (NOLOCK) ON sys.sql_modules.object_id = sys.objects.object_id 
INNER JOIN sys.schemas (NOLOCK) ON sys.objects.schema_id = sys.schemas.schema_id
WHERE
    (
           '#' + sys.sql_modules.definition + '#' COLLATE SQL_Latin1_General_CP1_CI_AS LIKE '%[^a-z_]'+@SCHEMA_NAME+'.'+@OBJECT_NAME+'[^a-z_]%' ESCAPE '\'
        OR '#' + sys.sql_modules.definition + '#' COLLATE SQL_Latin1_General_CP1_CI_AS LIKE '%[^a-z_]\['+@SCHEMA_NAME+'\].'+@OBJECT_NAME+'[^a-z_]%' ESCAPE '\'
        OR '#' + sys.sql_modules.definition + '#' COLLATE SQL_Latin1_General_CP1_CI_AS LIKE '%[^a-z_]'+@SCHEMA_NAME+'.\['+@OBJECT_NAME+'\][^a-z_]%' ESCAPE '\'
        OR '#' + sys.sql_modules.definition + '#' COLLATE SQL_Latin1_General_CP1_CI_AS LIKE '%[^a-z_]\['+@SCHEMA_NAME+'\].\['+@OBJECT_NAME+'\][^a-z_]%' ESCAPE '\'
    )
ORDER BY sys.objects.type_desc, sys.schemas.name, sys.objects.name

PS:两个查询也在评论中搜索.

Answer 2

我试过这个查询，它似乎没问题：

select 
obj.type REFERENCING_OBJECT_TYPE
 ,SCHEMA_NAME(obj.schema_id) REFERENCING_OBJECT_SCHEMA
 ,obj.name                  REFERENCING_OBJECT_NAME
from sysdepends x
INNER JOIN sys.objects obj ON x.id  = obj.object_id
where depid = object_id('yourSchema.yourTable')
and col_name(depid, depnumber) = 'yourColumn'

Answer 3

本文介绍了实现此目的的最佳方法。

一个样品：

SELECT OBJECT_NAME (referencing_id),
              referenced_database_name, 
       referenced_schema_name, referenced_entity_name
FROM sys.sql_expression_dependencies d
WHERE OBJECT_NAME(d.referenced_id) = 'TableName'
      AND OBJECT_DEFINITION (referencing_id)  LIKE '%ColumnName%'
ORDER BY OBJECT_NAME(referencing_id);

Answer 4

正如 Luv 所说，这是一个老问题，但我发现了另外两个可能有用的解决方案。

我正在使用sys.dm_sql_referenced_entities系统对象来查找指定对象中的所有引用对象和列。您可以使用以下查询：

SELECT DISTINCT 
referenced_schema_name AS SchemaName, 
referenced_entity_name AS TableName, 
referenced_minor_name  AS ColumnName
FROM sys.dm_sql_referenced_entities ('yourrefencingobject', 'OBJECT'); 
GO

给出以下结果：

该对象的缺点是您需要指定一个引用对象。

或者进行如下搜索：

SELECT DISTINCT object_name(id) 
FROM AdventureWorks2012.dbo.syscomments (nolock) 
WHERE text like '%BusinessEntityID%'

给出以下结果：

我还找到了您可以在本文中使用的以下 SP ，但尚未对其进行正确测试：

> DECLARE    @string varchar(1000),   @ShowReferences char(1)
> 
> SET @string = 'Person.Person.BusinessEntityID' --> searchstring
> 
> SET @ShowReferences = 'N'
> /****************************************************************************/ /*                                                                    
> */ /* TITLE:   sp_FindReferences                                               */ /*                                                                          */ /* DATE:    18 February, 2004                                               */ /*                                                                          */ /* AUTHOR:  WILLIAM MCEVOY                                                  */ /*                                                                          */ /****************************************************************************/ /*                                                                    
> */ /* DESCRIPTION:  SEARCH SYSCOMMENTS FOR INPUT STRING, OUTPUT NAME OF OBJECT */ /*                                                       
> */ /****************************************************************************/ set nocount on
> 
> declare @errnum         int         ,
>         @errors         char(1)     ,
>         @rowcnt         int         ,
>         @output         varchar(255)
> 
> select  @errnum         = 0         ,
>         @errors         = 'N'       ,
>         @rowcnt         = 0         ,
>         @output         = ''        
> 
> /****************************************************************************/ /* INPUT DATA VALIDATION                                              
> */ /****************************************************************************/
> 
> 
> /****************************************************************************/ /* M A I N   P R O C E S S I N G                                      
> */ /****************************************************************************/
> 
> -- Create temp table to hold results DECLARE @Results table (   Name        varchar(55),   Type        varchar(12),   DateCreated datetime,  
> ProcLine    varchar(4000) )
> 
> 
> IF (@ShowReferences = 'N') BEGIN   insert into @Results   select
> distinct
>          'Name' = convert(varchar(55),SO.name),
>          'Type' = SO.type,
>          crdate,
>          ''
>     from sysobjects  SO
>     join syscomments SC on SC.id = SO.id    where SC.text like '%' + @string + '%'   union   select distinct
>          'Name' = convert(varchar(55),SO.name),
>          'Type' = SO.type,
>          crdate,
>          ''
>     from sysobjects  SO    where SO.name like '%' + @string + '%'   union   select distinct
>          'Name' = convert(varchar(55),SO.name),
>          'Type' = SO.type,
>          crdate,
>          ''
>     from sysobjects  SO
>     join syscolumns SC on SC.id = SO.ID    where SC.name like '%' + @string + '%'    order by 2,1 END ELSE BEGIN   insert into @Results  
> select 
>          'Name'      = convert(varchar(55),SO.name),
>          'Type'      = SO.type,
>          crdate,
>          'Proc Line' = text
>     from sysobjects  SO
>     join syscomments SC on SC.id = SO.id    where SC.text like '%' + @string + '%'   union   select 
>          'Name'      = convert(varchar(55),SO.name),
>          'Type'      = SO.type,
>          crdate,
>          'Proc Line' = ''
>     from sysobjects  SO    where SO.name like '%' + @string + '%'   union   select 
>          'Name' = convert(varchar(55),SO.name),
>          'Type' = SO.type,
>          crdate,
>          'Proc Line' = ''
>     from sysobjects  SO
>     join syscolumns SC on SC.id = SO.ID    where SC.name like '%' + @string + '%'    order by 2,1 END
> 
> IF (@ShowReferences = 'N') BEGIN   select Name,
>          'Type' = Case (Type)
>                     when 'P'  then 'Procedure'
>                     when 'TR' then 'Trigger'
>                     when 'X'  then 'Xtended Proc'
>                     when 'U'  then 'Table'
>                     when 'C'  then 'Check Constraint'
>                     when 'D'  then 'Default'
>                     when 'F'  then 'Foreign Key'
>                     when 'K'  then 'Primary Key'
>                     when 'V'  then 'View'
>                     else Type
>                   end,
>          DateCreated
>     from @Results
>     order by 2,1 END ELSE BEGIN   select Name,
>          'Type' = Case (Type)
>                     when 'P'  then 'Procedure'
>                     when 'TR' then 'Trigger'
>                     when 'X'  then 'Xtended Proc'
>                     when 'U'  then 'Table'
>                     when 'C'  then 'Check Constraint'
>                     when 'D'  then 'Default'
>                     when 'F'  then 'Foreign Key'
>                     when 'K'  then 'Primary Key'
>                     when 'V'  then 'View'
>                     else Type
>                   end,
>          DateCreated,
>          ProcLine
>     from @Results
>     order by 2,1 END

希望这可以帮助