表a
a1 a2 a3 a4 a5 a6 ....a20
1 2 6 7 9......
....
求a1或者a2.......a20中,某一列的值=1的行,
求简洁的写法。
------解决方案--------------------
select *
from TB
where a1=1 or a2=1 or a3=1 or a4=1 or a5=1 or a6=1
or a7=1 or a8=1 or a9=1 or a10=1 or a11=1 or a12=1
or a13=1 or a14=1 or a15=1 or a16=1 or a17=1 or a18=1
or a19=1 or a20=1
最朴素的写法,感觉还挺简洁的哦。
------解决方案--------------------
如果是2008的话,先创建这个存储过程:
--创建临时表存放结果
create table #tbl(PK int identity primary key ,tbl sysname,col sysname)
declare @tbl nvarchar(300),@col sysname,@sql nvarchar(1000)
if @type=1
begin
declare curTable cursor fast_forward
for
select '['+SCHEMA_NAME(SCHEMA_ID)+'].['+o.name+']' tableName,'['+c.name+']' columnName from sys.columns c inner join sys.objects o on c.object_id=o.object_id
where o.type_desc='user_table' and user_type_id in (167,175,231,239,35,99) AND o.name=@tbname
end
else
begin
declare curTable cursor fast_forward
for
select '['+SCHEMA_NAME(SCHEMA_ID)+'].['+o.name+']' tableName,'['+c.name+']' columnName from sys.columns c inner join sys.objects o on c.object_id=o.object_id
where o.type_desc='user_table' and user_type_id in (56,48,52,59,60,62,106,108,122) AND o.name=@tbname
END
open curtable
fetch next from curtable into @tbl,@col
while @@FETCH_STATUS=0
begin
set @sql='if exists (select * from '+@tbl+' where '
if @type=1
begin
set @sql += @col + ' like ''%'+@str +'%'')'
end
else
begin
set @sql +=@col + ' in ('+@str+'))'
end
set @sql += ' INSERT #TBL(tbl,col) VALUES('''+@tbl+''','''+@col+''')'
--print @sql
exec (@sql)
fetch next from curtable into @tbl,@col
end
close curtable
deallocate curtable
select * from #tbl
然后执行:
exec spFind_Column_In_DB 2,1,'输入你的表名'