sql server 2012 数据库所有表里查找某字符串的方法

 –1.定义需要查找的关键字。在搜索中，使用模糊搜索：LIKE ‘%@key_find%’
 DECLARE @key_find NVARCHAR(MAX) = ‘123’;–假设是找字符串”123″

 –2.用游标Cursor_Table，遍历所有表
 DECLARE Cursor_Table CURSOR FOR
     SELECT name from sysobjects WHERE xtype = ‘u’ AND name <> ‘dtproperties’;
 OPEN Cursor_Table;
 DECLARE @tableName NVARCHAR(MAX);
 FETCH NEXT from Cursor_Table INTO @tableName;
 WHILE @@fetch_status = 0
 BEGIN
     DECLARE @tempSQLText NVARCHAR(MAX) = ”;

     –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）
     DECLARE columnCursor CURSOR FOR
         SELECT Name FROM SysColumns WHERE ID = Object_Id( @tableName ) and
                                                                             (
                                                                                 xtype = 35 or –text
                                                                                 xtype = 99 or –ntext
                                                                                 xtype = 167 or –varchar
                                                                                 xtype = 175 or –char
                                                                                 xtype = 231 or –nvarchar
                                                                                 xtype = 239 or –nchar
                                                                                 xtype = 241 –xml
                                                                             )
     OPEN columnCursor;
     DECLARE @columnName NVARCHAR(MAX);
     FETCH NEXT from columnCursor INTO @columnName;
     WHILE @@fetch_status = 0
     BEGIN

         –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。
         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’;
         EXEC( @DynamicSQLText );
         FETCH NEXT from columnCursor INTO @columnName
     END
     exec(@tempSQLText);
     CLOSE columnCursor;
     DEALLOCATE columnCursor;
     FETCH NEXT from Cursor_Table INTO @tableName;
 END
 CLOSE Cursor_Table;
 DEALLOCATE Cursor_Table;