下面将为您介绍sql遍历所有表中某项值为已知数的查询语句写法,供您参考,如果您对sql遍历方面感兴趣的话,不妨一看,希望对您有所帮助。
- CREATE proc Full_Search(@string varchar(50))
- as
- begin
- declare @tbname varchar(50)
- declare tbroy cursor for select name from sysobjects
- where xtype= 'u ' --***个游标遍历所有的表
- open tbroy
- fetch next from tbroy into @tbname
- while @@fetch_status=0
- begin
- declare @colname varchar(50)
- declare colroy cursor for select name from syscolumns
- where id=object_id(@tbname) and xtype in (
- select xtype from systypes
- where name in ( 'varchar ', 'nvarchar ', 'char ', 'nchar ') --数据类型为字符型的字段
- ) --第二个游标是***个游标的嵌套游标,遍历某个表的所有字段
- open colroy
- fetch next from colroy into @colname
- while @@fetch_status=0
- begin
- declare @sql nvarchar(1000),@j int
- select @sql= 'select @i=count(1) from ' +@tbname + ' where '+ @colname+ ' like '+ '''%'+@string+ '%'''
- exec sp_executesql @sql,N'@i int output',@i=@j output --输出满足条件表的记录数
- if @j> 0
- BEGIN
- select 包含字串的表名=@tbname
- --exec( 'select distinct '+@colname+' from ' +@tbname + ' where '+ @colname+ ' like '+ '''%'+@string+ '%''')
- END
- fetch next from colroy into @colname
- end
- close colroy
- deallocate colroy
- fetch next from tbroy into @tbname
- end
- close tbroy
- deallocate tbroy
- end
- go
- exec Full_Search '123'
以上就是sql遍历所有表中某项值为已知数的查询方法。
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