sql遍历所有表中某项值为已知数的查询方法

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我是靠谱客的博主糊涂豆芽，这篇文章主要介绍sql遍历所有表中某项值为已知数的查询方法，现在分享给大家，希望可以做个参考。

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。

复制代码

CREATE proc Full_Search(@string varchar(50))   
as   
begin   
 
declare @tbname varchar(50)   
declare tbroy cursor for select name from sysobjects   
where xtype= 'u ' --第一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   
) --第二个游标是第一个游标的嵌套游标，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'

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CREATE proc Full_Search(@string varchar(50))   
as   
begin   
 
declare @tbname varchar(50)   
declare tbroy cursor for select name from sysobjects   
where xtype= 'u ' --第一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   
) --第二个游标是第一个游标的嵌套游标，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'