Sql 子查询问题
我有以下疑问:Sql 子查询问题,sql,oracle,plsql,plsqldeveloper,Sql,Oracle,Plsql,Plsqldeveloper,我有以下疑问: SELECT SP.PACKAGEID,SP.ORDERID,PTS.CREATIONDATE AS SHIPPEDDATE FROM PACKAGES SP INNER JOIN ( SELECT * FROM ( SELECT *FROM PACKAGE_STATISTICS A WHERE((A.PACKAGEID=SP.PACKAGEID) AND(A.PACKAGESTATUS=2) AND(TO_DATE(to_char(
SELECT SP.PACKAGEID,SP.ORDERID,PTS.CREATIONDATE AS SHIPPEDDATE
FROM PACKAGES SP
INNER JOIN
(
SELECT * FROM
(
SELECT *FROM PACKAGE_STATISTICS A
WHERE((A.PACKAGEID=SP.PACKAGEID)
AND(A.PACKAGESTATUS=2)
AND(TO_DATE(to_char(A.CREATIONDATE,'mm/dd/yyyy'),'mm/dd/yyyy')
BETWEEN TO_DATE('2/19/2011','mm/dd/yyyy') AND (TO_DATE('3/21/2011','mm/dd/yyyy'))))
ORDER BY A.CREATIONDATE
) WHERE ROWNUM<2
) PTS ON PTS.PACKAGEID=SP.PACKAGEID
WHERE SP.ISSUEID IN(402783)
此查询根据以下条件从PACKAGES表中选择PACKAGES details:
包装箱的状态必须已装运。通过将PACKAGE_Statistics的PACKAGESTATUS列设置为2表示
如果一个包有多个已发货条目,请根据CREATIONDATE列值选择latestbased。
当我运行上面的查询时,它抛出了ORA-00904错误,因为级别2的子查询引用了表名。因此,我对查询进行了如下修改:
SELECT SP.PACKAGEID,SP.ORDERID, (SELECT CREATIONDATE FROM
(
SELECT *FROM PACKAGE_STATISTICSA
WHERE
((A.PACKAGEID=SP.PACKAGEID)
AND(A.PACKAGESTATUS=2)
AND(TO_DATE(to_char(A.CREATIONDATE,'mm/dd/yyyy'),'mm/dd/yyyy')
BETWEEN TO_DATE('2/19/2011','mm/dd/yyyy') AND (TO_DATE('3/21/2011','mm/dd/yyyy'))))
ORDER BY A.CREATIONDATE
) WHERE ROWNUM<2) AS SHIPPEDDATE
FROM PACKAGESSP
WHERE
(SHIPPEDDATE BETWEEN TO_DATE('2/19/2011','mm/dd/yyyy')
AND (TO_DATE('3/21/2011','mm/dd/yyyy')))
AND SP.ISSUEID IN(402783)
它再次抛出ORA-00904 SHIPPEDDATE无效标识符。
请告诉我怎么做?
谢谢大家,,
Pradeep如果您只需要来自PACKAGE\u统计的最新日期,为什么不直接使用MAXCREATION\u日期?我现在无法测试它,但您可能需要这样的查询:
SELECT SP.PACKAGEID
,SP.ORDERID
,MAX(A.CREATIONDATE) AS SHIPPEDDATE
FROM PACKAGES SP
INNER JOIN PACKAGE_STATISTICS A ON A.PACKAGEID = SP.PACKAGEID
WHERE SP.ISSUEID IN (402783)
AND A.PACKAGEID = SP.PACKAGEID
AND A.PACKAGESTATUS = 2
AND TO_DATE(to_char(A.CREATIONDATE, 'mm/dd/yyyy'), 'mm/dd/yyyy') BETWEEN
TO_DATE('2/19/2011', 'mm/dd/yyyy') AND
TO_DATE('3/21/2011', 'mm/dd/yyyy')
GROUP BY SP.PACKAGEID
,SP.ORDERID
如果您想从最新创建日期的PACKAGEL统计数据行中获取更多的详细信息,请考虑使用解析函数:
SELECT SP.PACKAGEID
,SP.ORDERID
,PTS.*
FROM PACKAGES SP
INNER JOIN (SELECT ROW_NUMBER() OVER(PARTITION BY PACKAGEID ORDER BY CREATIONDATE DESC) rn
,A.*
FROM PACKAGE_STATISTICS A
WHERE A.PACKAGESTATUS = 2
AND TO_DATE(to_char(A.CREATIONDATE, 'mm/dd/yyyy')
,'mm/dd/yyyy') BETWEEN
TO_DATE('2/19/2011', 'mm/dd/yyyy') AND
TO_DATE('3/21/2011', 'mm/dd/yyyy')) PTS ON PTS.PACKAGEID =
SP.PACKAGEID
AND PTS.RN = 1;
嗨,马辛,谢谢你的回复…我需要每个包裹的最大发货日期。也就是说,每个包裹在包裹统计表中都有零个或多个装运状态条目。如果没有与包对应的Shipped status条目,则我不希望将该包包含在结果集中。否则,我只需要最近添加的Shipped Entry。因此,如果我没有出现任何语法错误,我的第一个查询应该返回您想要的内容。事实上,您的第二个查询做到了这一点。在实际场景中,我必须获取连接8个表的20多列。所以,我选择了第二个。非常感谢