查询整个数据库中某个特定值所在的表和字段的方法
方法1:
CREATE PROCEDURE [dbo].[SP_FindValueInDB]
(
@value VARCHAR(1024)
)
AS
BEGIN
-- SET NOCOUNT ON added to prevent extra result sets from
-- interfering with SELECT statements.
SET NOCOUNT ON;
DECLARE @sql VARCHAR(1024)
DECLARE @table VARCHAR(64)
DECLARE @column VARCHAR(64)
CREATE TABLE #t (
tablename VARCHAR(64),
columnname VARCHAR(64)
)
DECLARE TABLES CURSOR
FOR
SELECT o.name, c.name
FROM syscolumns c
INNER JOIN sysobjects o ON c.id = o.id
WHERE o.type = 'U' AND c.xtype IN (167, 175, 231, 239)
ORDER BY o.name, c.name
OPEN TABLES
FETCH NEXT FROM TABLES
INTO @table, @column
WHILE @@FETCH_STATUS = 0
BEGIN
SET @sql = 'IF EXISTS(SELECT NULL FROM [' + @table + '] '
SET @sql = @sql + 'WHERE RTRIM(LTRIM([' + @column + '])) LIKE ''%' + @value + '%'') '
SET @sql = @sql + 'INSERT INTO #t VALUES (''' + @table + ''', '''
SET @sql = @sql + @column + ''')'
EXEC(@sql)
FETCH NEXT FROM TABLES
INTO @table, @column
END
CLOSE TABLES
DEALLOCATE TABLES
SELECT *
FROM #t
DROP TABLE #t
End
方法2:
CREATE PROC sp_ValueSearch @value sql_variant, --要搜索的数据 @precision bit=1 --1=仅根据sql_variant中的数据类型查找对应类型的数据列.<>1,查询兼容的所有列,字符数据使用like匹配 AS SET NOCOUNT ON IF @value IS NULL RETURN --数据类型处理 SELECT xtype INTO #t FROM systypes WHERE name=SQL_VARIANT_PROPERTY(@value,N'BaseType') --扩展数据类型及查询处理语句 DECLARE @sql nvarchar(4000),@sql1 nvarchar(4000) IF @precision=1 SET @sql=CASE SQL_VARIANT_PROPERTY(@value,N'BaseType') WHEN N'text' THEN N' LIKE N''%''+CAST(@value as varchar(8000))+''%''' WHEN N'ntext' THEN N' LIKE ''%''+CAST(@value as nvarchar(4000))+''%''' ELSE N'=@value' END ELSE BEGIN SET @sql=CAST(SQL_VARIANT_PROPERTY(@value,N'BaseType') as sysname) IF @sql LIKE N'%char' or @sql LIKE N'%text' BEGIN INSERT #t SELECT xtype FROM systypes WHERE name LIKE N'%char' or name LIKE N'%text' SELECT @sql=N' LIKE N''%''+CAST(@value as ' +CASE WHEN LEFT(@sql,1)=N'n' THEN ' nvarchar(4000)' ELSE 'varchar(8000)' END +N')+N''%''' END ELSE IF @sql LIKE N'%datetime' BEGIN INSERT #t SELECT xtype FROM systypes WHERE name LIKE N'%datetime' SET @sql=N'=@value' END ELSE IF @sql LIKE N'%int' OR @sql LIKE N'%money' OR @sql IN(N'real',N'float',N'decimal',N'numeric') BEGIN INSERT #t SELECT xtype FROM systypes WHERE name LIKE N'%int' OR name LIKE N'%money' OR name IN(N'real',N'float',N'decimal') SET @sql=N'=@value' END ELSE SET @sql=N'=@value' END --保存结果的临时表 CREATE TABLE #(TableName sysname,FieldName sysname,Type sysname,SQL nvarchar(4000)) DECLARE tb CURSOR LOCAL FOR SELECT N'SELECT * FROM ' +QUOTENAME(USER_NAME(o.uid)) +N'.'+QUOTENAME(o.name) +N' WHERE '+QUOTENAME(c.name) +@sql, N'INSERT # VALUES(N'+QUOTENAME(o.name,N'''') +N',N'+QUOTENAME(c.name,N'''') +N',N'+QUOTENAME(QUOTENAME(t.name)+CASE WHEN t.name IN (N'decimal',N'numeric') THEN N'('+CAST(c.prec as varchar)+N','+CAST(c.scale as varchar)+N')' WHEN t.name=N'float' OR t.name like N'%char' OR t.name like N'%binary' THEN N'('+CAST(c.prec as varchar)+N')' ELSE N'' END,N'''') +N',@sql)' FROM sysobjects o,syscolumns c,systypes t,#t tt WHERE o.id=c.id AND c.xusertype=t.xusertype AND t.xtype=tt.xtype AND OBJECTPROPERTY(o.id,N'IsUserTable')=1 OPEN tb FETCH tb INTO @sql,@sql1 WHILE @@FETCH_STATUS=0 BEGIN SET @sql1=N'IF EXISTS('+@sql+N') '+@sql1 EXEC sp_executesql @sql1,N'@value sql_variant,@sql nvarchar(4000)',@value,@sql FETCH tb INTO @sql,@sql1 END CLOSE tb DEALLOCATE tb SELECT * FROM #
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