Sql 带in子句的nvl函数
我的NVL函数有问题。我可以使用in子句properyl,但当我添加NVL时,它会给出错误 我的问题是这样的:Sql 带in子句的nvl函数,sql,oracle,nvl,Sql,Oracle,Nvl,我的NVL函数有问题。我可以使用in子句properyl,但当我添加NVL时,它会给出错误 我的问题是这样的: SELECT ci.date, SUM (cid.salary) amount, SUM (cid.slary_gross) gross_amount FROM students ci, orders cid WHERE ci.id IN NVL((select id from sysadm.students where
SELECT ci.date,
SUM (cid.salary) amount, SUM (cid.slary_gross) gross_amount
FROM students ci,
orders cid
WHERE
ci.id IN NVL((select id from sysadm.students
where status = 'IN' AND student_id= 24514 ORDER BY id
FETCH FIRST 3 ROWS ONLY), ci.id )
我的错误:01427。00000-单行子查询返回多行
İ如果我删除了nvl函数,只需像下面这样写它正在运行。我如何使用nvl with in子句
从sysadm.students中选择id中的ci.id,其中status='IN'和student_id=24514 ORDER BY id仅获取前3行我怀疑子查询中的id是否为空。因此,我建议:
with s3 as (
select s.id
from sysadm.students s.
where s.status = 'IN' and s.student_id = 24514
ORDER BY id
FETCH FIRST 3 ROWS ONLY
)
select . . .
where ci.id in (select id from s3) or
not exists (select 1 from s3);
这将检查您的id是否在列表中,或者列表是否为空