我想创建一个临时表,该表是从一个查询派生而来,用于另一个子查询,以便按条件简化rownum()和分区。我输入的查询如下所示,但它返回错误t.trlr_num无效标识符。
with t as
(select distinct
ym.trlr_num,
ym.arrdte,
ri.invnum,
ri.supnum
from rcvinv ri, yms_ymr ym
where ym.trlr_cod='RCV'
and ri.trknum = ym.trlr_num
and ym.wh_id <=50
and ym.trlr_stat in ('C','CI','R','OR')
and ym.arrdte is not null
order by ym.arrdte desc
)
select trlr_number, invnum, supnum
from
(
select
t.trlr_num, t.invnum, t.supnum,
row_number() over (partition by t.trlr_number,t.invnum order by t.arrdte) as rn
from t
)
where rn = 1;
从上面,我提出了一个条件来创建一个表t作为临时表,用于下面的select语句。但似乎是错误输出无效的标识符。
答案 0 :(得分:0)
似乎是拼写错误,用trlr_num替换trlr_number并且它可以正常工作
with t as
(select distinct
ym.trlr_num,
ym.arrdte,
ri.invnum,
ri.supnum
from rcvinv ri, yms_ymr ym
where ym.trlr_cod='RCV'
and ri.trknum = ym.trlr_num
and ym.wh_id <=50
and ym.trlr_stat in ('C','CI','R','OR')
and ym.arrdte is not null
order by ym.arrdte desc
)
select trlr_num, invnum, supnum
from
(
select
t.trlr_num, t.invnum, t.supnum,
row_number() over (partition by t.trlr_num,t.invnum order by t.arrdte) as rn
from t
)
where rn = 1;
答案 1 :(得分:0)
您可以将 WITH子句中的多个子查询用作单独的临时表。这将很容易理解:
WITH t AS
(SELECT DISTINCT ym.trlr_num trlr_num,
ym.arrdte arrdte,
ri.invnum invnum,
ri.supnum supnum
FROM rcvinv ri,
yms_ymr ym
WHERE ym.trlr_cod ='RCV'
AND ri.trknum = ym.trlr_num
AND ym.wh_id <=50
AND ym.trlr_stat IN ('C','CI','R','OR')
AND ym.arrdte IS NOT NULL
),
t1 AS (
SELECT t.trlr_num,
t.arrdte,
t.invnum,
t.supnum,
row_number() OVER (PARTITION BY t.trlr_num, t.invnum ORDER BY t.trlr_num, t.invnum DESC) rn
FROM t
)
SELECT trlr_num, arrdte, invnum, supnum
FROM t1
WHERE rn = 1;