Sql server 获取所有列中具有空值的行
例如,我有一个返回以下结果的查询Sql server 获取所有列中具有空值的行,sql-server,Sql Server,例如,我有一个返回以下结果的查询 ID Name Year Age 0 NULL 2013 23 1 Luis NULL 24 2 Jose 2010 NULL 3 Fernando 2003 43 如果某些列(在本例中为Name、Year、Age)至少有一行具有空值,否则为0行,则我希望获取所有行。例如,在公开的示例中,我得到4行,因为每列至少有一个空值 另一方面: ID Name Year Ag
ID Name Year Age
0 NULL 2013 23
1 Luis NULL 24
2 Jose 2010 NULL
3 Fernando 2003 43
如果某些列(在本例中为Name、Year、Age)至少有一行具有空值,否则为0行,则我希望获取所有行。例如,在公开的示例中,我得到4行,因为每列至少有一个空值
另一方面:
ID Name Year Age
0 NULL 2013 23
1 Luis NULL 24
2 Jose 2010 34
3 Fernando 2003 43
年龄没有空值,因此我得到0行
提前谢谢 使用以下命令:
with cte as (
select case when count(*)=count(year) or count(*) = count(name) or count(*)=count(age) then 0 else 1 end as val from data
)
select data.* from data,cte where 1 = cte.val
使用以下命令:
with cte as (
select case when count(*)=count(year) or count(*) = count(name) or count(*)=count(age) then 0 else 1 end as val from data
)
select data.* from data,cte where 1 = cte.val
@mrida的版本非常完美,但我使用了CTE,只进行计数计算,以便于支持
/* test tables:
create table t1 (ID int,Name varchar(100),[Year] int, Age int)
insert t1
select 0,NULL,2013,23 union all
select 1,'Luis',NULL,24 union all
select 2,'Jose',2010,NULL union all
select 3,'Fernando',2003,43
create table t2 (ID int,Name varchar(100),[Year] int, Age int)
insert t2
select 0,NULL,2013,23 union all
select 1,'Luis',NULL,24 union all
select 2,'Jose',2010,34 union all
select 3,'Fernando',2003,43
*/
--for Jose with undefined age
with cte as (select count(*) as AllCount,count(year) as YearsCount,count(name) as NamesCount,count(age) as AgesCount from t1)
select t1.* from t1,cte
where not (cte.AllCount=cte.YearsCount or cte.AllCount=cte.NamesCount or cte.AllCount=cte.AgesCount)
--for 34-aged Jose :)
with cte as (select count(*) as AllCount,count(year) as YearsCount,count(name) as NamesCount,count(age) as AgesCount from t2)
select t2.* from t2,cte
where not (cte.AllCount=cte.YearsCount or cte.AllCount=cte.NamesCount or cte.AllCount=cte.AgesCount)
@mrida的版本非常完美,但我使用了CTE,只进行计数计算,以便于支持
/* test tables:
create table t1 (ID int,Name varchar(100),[Year] int, Age int)
insert t1
select 0,NULL,2013,23 union all
select 1,'Luis',NULL,24 union all
select 2,'Jose',2010,NULL union all
select 3,'Fernando',2003,43
create table t2 (ID int,Name varchar(100),[Year] int, Age int)
insert t2
select 0,NULL,2013,23 union all
select 1,'Luis',NULL,24 union all
select 2,'Jose',2010,34 union all
select 3,'Fernando',2003,43
*/
--for Jose with undefined age
with cte as (select count(*) as AllCount,count(year) as YearsCount,count(name) as NamesCount,count(age) as AgesCount from t1)
select t1.* from t1,cte
where not (cte.AllCount=cte.YearsCount or cte.AllCount=cte.NamesCount or cte.AllCount=cte.AgesCount)
--for 34-aged Jose :)
with cte as (select count(*) as AllCount,count(year) as YearsCount,count(name) as NamesCount,count(age) as AgesCount from t2)
select t2.* from t2,cte
where not (cte.AllCount=cte.YearsCount or cte.AllCount=cte.NamesCount or cte.AllCount=cte.AgesCount)