最近因ERP项目，我们需要知道前台数据导入功能Application操作的导入字段都写入到了后台数据库哪些表的哪些列：比如：我们导入了某个客户的资料，我们知道此客户的姓名是ZhangShan，我们想知道，在我们的业务数据库(eg:NorthWind)中，有哪些数据表的哪些字段设置了此姓名值ZhangShan,通过下面的SQL，我们就可以实现此目的，此处的SQL搜索自网上，在此处做了局部修改。
一、搜索数据是String类型
适用于搜索Text,NText,Varchar,Nvarchar,Char,NChar等类型
1、创建存储过程:My_Search_StringInGivenTable
| USE [NORTHWIND] GO /****** Object: StoredProcedure [dbo].[My_Search_StringInGivenTable] Script Date: 09/25/2011 15:37:14 ******/ SET ANSI_NULLS ON GO SET QUOTED_IDENTIFIER ON GO CREATE PROCEDURE [dbo].[My_Search_StringInGivenTable] (@SearchString NVARCHAR(MAX), @Table_Schema sysname, @Table_Name sysname) AS BEGIN DECLARE @Columns NVARCHAR(MAX), @Cols NVARCHAR(MAX), @PkColumn NVARCHAR(MAX) -- Get all character columns SET @Columns = STUFF((SELECT ', ' + QUOTENAME(Column_Name) FROM INFORMATION_SCHEMA.COLUMNS WHERE DATA_TYPE IN ('text','ntext','varchar','nvarchar','char','nchar') AND TABLE_NAME = @Table_Name ORDER BY COLUMN_NAME FOR XML PATH('')),1,2,'') IF @Columns IS NULL -- no character columns RETURN -1 -- Get columns for select statement - we need to convert all columns to nvarchar(max) SET @Cols = STUFF((SELECT ', cast(' + QUOTENAME(Column_Name) + ' as nvarchar(max)) as ' + QUOTENAME(Column_Name) FROM INFORMATION_SCHEMA.COLUMNS WHERE DATA_TYPE IN ('text','ntext','varchar','nvarchar','char','nchar') AND TABLE_NAME = @Table_Name ORDER BY COLUMN_NAME FOR XML PATH('')),1,2,'') SET @PkColumn = STUFF((SELECT N' + ''|'' + ' + ' cast(' + QUOTENAME(CU.COLUMN_NAME) + ' as nvarchar(max))' FROM INFORMATION_SCHEMA.TABLE_CONSTRAINTS TC INNER JOIN INFORMATION_SCHEMA.CONSTRAINT_COLUMN_USAGE CU ON TC.TABLE_NAME = CU.TABLE_NAME AND TC.TABLE_SCHEMA = CU.TABLE_SCHEMA AND Tc.CONSTRAINT_NAME = CU.CONSTRAINT_NAME WHERE TC.CONSTRAINT_TYPE ='PRIMARY KEY' AND TC.TABLE_SCHEMA = @Table_Schema AND TC.TABLE_NAME = @Table_Name ORDER BY CU.COLUMN_NAME FOR XML PATH('')),1,9,'') IF @PkColumn IS NULL SELECT @PkColumn = 'cast(NULL as nvarchar(max))' -- set select statement using dynamic UNPIVOT DECLARE @SQL NVARCHAR(MAX) SET @SQL = 'select *, ' + QUOTENAME(@Table_Schema,'''') + 'as [Table Schema], ' + QUOTENAME(@Table_Name,'''') + ' as [Table Name]' + ' from (select '+ @PkColumn + ' as [PK Column], ' + @Cols + ' from ' + QUOTENAME(@Table_Name) + ' )src UNPIVOT ([Column Value] for [Column Name] IN (' + @Columns + ')) unpvt WHERE [Column Value] LIKE ''%'' + @SearchString + ''%''' --print @SQL EXECUTE sp_ExecuteSQL @SQL, N'@SearchString nvarchar(max)', @SearchString END |
2、创建搜索存储过程:My_Search_String_AllTables
此存储过程将遍历指定数据库的所有表，并利用上面创建的存储过程My_Search_StringInGivenTable来取得每个表的搜索结果。
| USE [NORTHWIND] GO /****** Object: StoredProcedure [dbo].[My_Search_String_AllTables] Script Date: 09/25/2011 15:41:58 ******/ SET ANSI_NULLS OFF GO SET QUOTED_IDENTIFIER OFF GO CREATE PROC [dbo].[My_Search_String_AllTables] ( @SearchString NVARCHAR(MAX) ) AS BEGIN CREATE TABLE #RESULT ([PK COLUMN] NVARCHAR(MAX), [COLUMN VALUE] NVARCHAR(MAX), [COLUMN Name] sysname, [TABLE SCHEMA] sysname, [TABLE Name] sysname) DECLARE @Table_Name sysname, @Table_Schema sysname DECLARE curAllTables CURSOR LOCAL FORWARD_ONLY STATIC READ_ONLY FOR SELECT Table_Schema, Table_Name FROM INFORMATION_SCHEMA.Tables WHERE TABLE_TYPE = 'BASE TABLE' ORDER BY Table_Schema, Table_Name OPEN curAllTables FETCH curAllTables INTO @Table_Schema, @Table_Name WHILE (@@FETCH_STATUS = 0) -- Loop through all tables in the database BEGIN INSERT #RESULT EXECUTE My_Search_StringInGivenTable @SearchString, @Table_Schema, @Table_Name FETCH curAllTables INTO @Table_Schema, @Table_Name END -- while CLOSE curAllTables DEALLOCATE curAllTables -- Return results SELECT * FROM #RESULT ORDER BY [Table Name] END |
使用示例
| USE [NORTHWIND] GO DECLARE @return_value int EXEC @return_value = [dbo].[My_Search_String_AllTables] @SearchString = N'WantValue' SELECT 'Return Value' = @return_value GO |
还有另一个版本，就是直接创建一个存储过程来取得所要结果，但个人觉得前面那个方法更具灵活性
| USE [NORTHWIND] GO /****** Object: StoredProcedure [dbo].[ZL_SearchAllTables] Script Date: 09/25/2011 15:44:10 ******/ SET ANSI_NULLS OFF GO SET QUOTED_IDENTIFIER OFF GO CREATE PROC [dbo].[ZL_SearchAllTables] ( @SearchStr nvarchar(100) ) AS BEGIN CREATE TABLE #Results (ColumnName nvarchar(370), ColumnValue nvarchar(3630)) SET NOCOUNT ON DECLARE @TableName nvarchar(256), @ColumnName nvarchar(128), @SearchStr2 nvarchar(110) SET @TableName = '' SET @SearchStr2 = QUOTENAME('%' + @SearchStr + '%','''') WHILE @TableName IS NOT NULL BEGIN SET @ColumnName = '' SET @TableName = ( SELECT MIN(QUOTENAME(TABLE_SCHEMA) + '.' + QUOTENAME(TABLE_NAME)) FROM INFORMATION_SCHEMA.TABLES WHERE TABLE_TYPE = 'BASE TABLE' AND QUOTENAME(TABLE_SCHEMA) + '.' + QUOTENAME(TABLE_NAME) > @TableName AND OBJECTPROPERTY( OBJECT_ID( QUOTENAME(TABLE_SCHEMA) + '.' + QUOTENAME(TABLE_NAME) ), 'IsMSShipped' ) = 0 ) WHILE (@TableName IS NOT NULL) AND (@ColumnName IS NOT NULL) BEGIN SET @ColumnName = ( SELECT MIN(QUOTENAME(COLUMN_NAME)) FROM INFORMATION_SCHEMA.COLUMNS WHERE TABLE_SCHEMA = PARSENAME(@TableName, 2) AND TABLE_NAME = PARSENAME(@TableName, 1) AND DATA_TYPE IN ('char', 'varchar', 'nchar', 'nvarchar') AND QUOTENAME(COLUMN_NAME) > @ColumnName ) IF @ColumnName IS NOT NULL BEGIN INSERT INTO #Results EXEC ( 'SELECT ''' + @TableName + '.' + @ColumnName + ''', LEFT(' + @ColumnName + ', 3630) FROM ' + @TableName + ' (NOLOCK) ' + ' WHERE ' + @ColumnName + ' LIKE ' + @SearchStr2 ) END END END SELECT ColumnName, ColumnValue FROM #Results END [code] 二、搜索数据是Int类型 适用于搜索smallint, tinyint, int, bigint等类型 1、创建存储过程 My_Search_IntInGivenTable [code] USE [NORTHWIND] GO /****** Object: StoredProcedure [dbo].[My_Search_IntInGivenTable] Script Date: 09/25/2011 15:45:46 ******/ SET ANSI_NULLS ON GO SET QUOTED_IDENTIFIER ON GO CREATE PROCEDURE [dbo].[My_Search_IntInGivenTable] (@SearchValue INT, @Table_Schema sysname, @Table_Name sysname) AS BEGIN DECLARE @Columns NVARCHAR(MAX) , @Cols NVARCHAR(MAX) , @PkColumn NVARCHAR(MAX) , @SQL NVARCHAR(MAX) --判断并创建#Result表 IF OBJECT_ID('TempDB..#Result', 'U') IS NOT NULL DROP TABLE #Result CREATE TABLE #RESULT ( [PK COLUMN] NVARCHAR(MAX) , [COLUMN VALUE] BIGINT , [COLUMN Name] SYSNAME , [TABLE SCHEMA] SYSNAME , [TABLE Name] SYSNAME ) --开始搜索给定的表 DECLARE curAllTables CURSOR LOCAL FORWARD_ONLY STATIC READ_ONLY FOR SELECT Table_Schema , Table_Name FROM INFORMATION_SCHEMA.Tables WHERE Table_Name =@Table_Name OPEN curAllTables WHILE 1 = 1 BEGIN FETCH curAllTables INTO @Table_Schema, @Table_Name IF @@FETCH_STATUS <> 0 -- Loop through all tables in the database BREAK PRINT CHAR(13) + 'Processing ' + QUOTENAME(@Table_Schema) + '.' + QUOTENAME(@Table_Name) -- Get all int columns SET @Columns = STUFF(( SELECT ', ' + QUOTENAME(Column_Name) FROM INFORMATION_SCHEMA.COLUMNS WHERE DATA_TYPE LIKE '%int' AND TABLE_NAME = @Table_Name AND table_schema = @Table_Schema ORDER BY COLUMN_NAME FOR XML PATH('') ), 1, 2, '') IF @Columns IS NULL BEGIN PRINT 'No int columns in the ' + QUOTENAME(@Table_Schema) + '.' + QUOTENAME(@Table_Name) CONTINUE END -- Get columns for select statement - we need to convert all columns to bigint SET @Cols = STUFF(( SELECT ', cast(' + QUOTENAME(Column_Name) + ' as bigint) as ' + QUOTENAME(Column_Name) FROM INFORMATION_SCHEMA.COLUMNS WHERE DATA_TYPE LIKE '%int' AND TABLE_NAME = @Table_Name ORDER BY COLUMN_NAME FOR XML PATH('') ), 1, 2, '') -- Create PK column(s) SET @PkColumn = STUFF(( SELECT N' + ''|'' + ' + ' cast(' + QUOTENAME(CU.COLUMN_NAME) + ' as nvarchar(max))' FROM INFORMATION_SCHEMA.TABLE_CONSTRAINTS TC INNER JOIN INFORMATION_SCHEMA.CONSTRAINT_COLUMN_USAGE CU ON TC.TABLE_NAME = CU.TABLE_NAME AND TC.TABLE_SCHEMA = CU.TABLE_SCHEMA AND Tc.CONSTRAINT_NAME = CU.CONSTRAINT_NAME WHERE TC.CONSTRAINT_TYPE = 'PRIMARY KEY' AND TC.TABLE_SCHEMA = @Table_Schema AND TC.TABLE_NAME = @Table_Name ORDER BY CU.COLUMN_NAME FOR XML PATH('') ), 1, 9, '') IF @PkColumn IS NULL SELECT @PkColumn = 'cast(NULL as nvarchar(max))' -- set select statement using dynamic UNPIVOT SET @SQL = 'select *, ' + QUOTENAME(@Table_Schema, '''') + 'as [Table Schema], ' + QUOTENAME(@Table_Name, '''') + ' as [Table Name]' + ' from (select ' + @PkColumn + ' as [PK Column], ' + @Cols + ' from ' + QUOTENAME(@Table_Schema) + '.' + QUOTENAME(@Table_Name) + ' )src UNPIVOT ([Column Value] for [Column Name] IN (' + @Columns + ')) unpvt WHERE [Column Value] = @SearchValue' --print @SQL -- if we get errors, we may want to print generated SQL INSERT #RESULT ( [PK COLUMN] , [COLUMN VALUE] , [COLUMN Name] , [TABLE SCHEMA] , [TABLE Name] ) EXECUTE sp_ExecuteSQL @SQL, N'@SearchValue int', @SearchValue PRINT 'Found ' + CAST(@@ROWCOUNT AS VARCHAR(10)) + ' records in ' + QUOTENAME(@Table_Schema) + '.' + QUOTENAME(@Table_Name) END CLOSE curAllTables DEALLOCATE curAllTables SELECT * FROM #RESULT ORDER BY [TABLE SCHEMA] , [TABLE Name] END |
2、创建搜索存储过程My_Search_Int_AllTables,与上面类似，此存储过程将调用 My_Search_IntInGivenTable来实现所遍历的每一个数据表的搜索结果
| USE [NORTHWIND] GO /****** Object: StoredProcedure [dbo].[My_Search_Int_AllTables] Script Date: 09/25/2011 15:48:29 ******/ SET ANSI_NULLS OFF GO SET QUOTED_IDENTIFIER OFF GO CREATE PROC [dbo].[My_Search_Int_AllTables] ( @SearchValue INT ) AS BEGIN CREATE TABLE #RESULT ([PK COLUMN] NVARCHAR(MAX), [COLUMN VALUE] NVARCHAR(MAX), [COLUMN Name] sysname, [TABLE SCHEMA] sysname, [TABLE Name] sysname) DECLARE @Table_Name sysname, @Table_Schema sysname DECLARE curAllTables CURSOR LOCAL FORWARD_ONLY STATIC READ_ONLY FOR SELECT Table_Schema, Table_Name FROM INFORMATION_SCHEMA.Tables WHERE TABLE_TYPE = 'BASE TABLE' ORDER BY Table_Schema, Table_Name OPEN curAllTables FETCH curAllTables INTO @Table_Schema, @Table_Name WHILE (@@FETCH_STATUS = 0) -- Loop through all tables in the database BEGIN INSERT #RESULT EXECUTE My_Search_StringInGivenTable @SearchValue, @Table_Schema, @Table_Name FETCH curAllTables INTO @Table_Schema, @Table_Name END -- while CLOSE curAllTables DEALLOCATE curAllTables -- Return results SELECT * FROM #RESULT ORDER BY [Table Name] END |
使用示例
| USE [NORTHWIND] GO DECLARE @return_value int EXEC @return_value = [dbo].[My_Search_Int_AllTables] @SearchValue = 68 SELECT 'Return Value' = @return_value GO |
Note:
1、你可以根据上面一、二中的第1个存储过程来实现只搜索指定某些数据表的功能。
2、对于其它数据类型如:Date，Real等等均可以此为参照进行修改。
3、此方法对大型数据库会很耗时，所以尽量在小数据库上调试。当需要在大数据库上操作时，尽量避开数据库使用高峰时段并要有耐心。
标签:
sqlserver
