在一个数据库中的所有表里查找一个字符串

此TSQL语句是针对SQL Server 2012编写。如果使用之前版本，需要对部分语句进行重写。

 1 USE [数据库名称];

 2 

 3 --1.定义需要查找的关键字。在搜索中，使用模糊搜索：LIKE '%@key_find%'

 4 DECLARE @key_find NVARCHAR(MAX) = '123';--假设是找字符串"123"

 5 

 6 --2.用游标Cursor_Table，遍历所有表

 7 DECLARE Cursor_Table CURSOR FOR

 8     SELECT name from sysobjects WHERE xtype = 'u' AND name <> 'dtproperties';

 9 OPEN Cursor_Table;

10 DECLARE @tableName NVARCHAR(MAX);

11 FETCH NEXT from Cursor_Table INTO @tableName;

12 WHILE @@fetch_status = 0

13 BEGIN

14     DECLARE @tempSQLText NVARCHAR(MAX) = '';

15 

16     --3.在表中，用游标columnCursor，遍历所有字段。注意，只遍历字符串类型的字段（列）

17     DECLARE columnCursor CURSOR FOR 

18         SELECT Name FROM SysColumns WHERE ID = Object_Id( @tableName ) and

19                                                                             ( 

20                                                                                 xtype = 35 or --text

21                                                                                 xtype = 99 or --ntext

22                                                                                 xtype = 167 or --varchar

23                                                                                 xtype = 175 or --char

24                                                                                 xtype = 231 or --nvarchar

25                                                                                 xtype = 239 or --nchar

26                                                                                 xtype = 241 --xml

27                                                                             )

28     OPEN columnCursor;

29     DECLARE @columnName NVARCHAR(MAX);

30     FETCH NEXT from columnCursor INTO @columnName;

31     WHILE @@fetch_status = 0

32     BEGIN

33 

34         --4.在表的字段中，对每一行进行模糊搜索，并输出找到的信息。

35         DECLARE @DynamicSQLText NVARCHAR(MAX) = 'IF ( EXISTS ( SELECT * FROM [' + @tableName + '] WHERE [' + @columnName + '] LIKE ''%' + @key_find + '%'' ) ) BEGIN DECLARE @CurrentTableCount Bigint = ( SELECT COUNT(*) From [' + @tableName + '] ); PRINT ''Find : Table [' + @tableName + '], Column [' + @columnName + '], Row Count:'' + CAST( @CurrentTableCount AS NVARCHAR(MAX) ) + ''.'';  END';

36         EXEC( @DynamicSQLText );

37         FETCH NEXT from columnCursor INTO @columnName

38     END

39     exec(@tempSQLText);

40     CLOSE columnCursor;

41     DEALLOCATE columnCursor;

42     FETCH NEXT from Cursor_Table INTO @tableName;

43 END

44 CLOSE Cursor_Table;

45 DEALLOCATE Cursor_Table;