我有以下查询
SELECT M_PILLAR,
M_MXCOUNTRY,
M_LIMIT_NETEXPOSURE,
M_LIMIT_CURRENCY_NETEXPOSURE,
M_MAXUTILIZATION_NETEXPOSURE,
M_AVAILABLE_NETEXPOSURE,
M_GROUP,
M_ENTITIES,
M_COUNTERPARTIES,
rank() OVER (partition BY M_COUNTERPARTIES,M_PILLAR,M_MAXEXPOSURE_NETEXPOSURE) AS test
FROM X_LP_PSR_REP
但看起来我的Sybase DB不支持窗口功能。
我尝试了以下内容:
SELECT M_PILLAR,
M_MXCOUNTRY,
M_LIMIT_NETEXPOSURE,
M_LIMIT_CURRENCY_NETEXPOSURE,
M_MAXUTILIZATION_NETEXPOSURE,
M_AVAILABLE_NETEXPOSURE,
M_GROUP,
M_ENTITIES,
M_COUNTERPARTIES,
rank() OVER (ORDER BY M_COUNTERPARTIES,M_PILLAR,M_MAXEXPOSURE_NETEXPOSURE) AS test FROM X_LP_PSR_REP
用“order by”替换“partition by”也没有用。
请告知如何继续。
我正在使用Sybase ASE
确切的版本是:
Adaptive Server Enterprise / 15.7.0 / EBF 21207 SMP SP50 / P / Solaris AMD64 / OS 5.10 / ase157sp5x / 3284/64位/ FBO / Thu Jul 11 07:19:59 2013
答案 0 :(得分:2)
您可以使用相关子查询(尽管效率低得多)来执行此操作。对于rank()
(使用第二个使用ORDER BY
且语法正确的示例),如下所示:
SELECT r.*,
(SELECT 1 + COUNT(*)
FROM X_LP_PSR_REP r2
WHERE (r2.M_COUNTERPARTIES < r.M_COUNTERPARTIES) OR
(r2.M_COUNTERPARTIES = r.M_COUNTERPARTIES AND r2.M_PILLAR < r.M_PILLAR) OR
(r2.M_COUNTERPARTIES = r.M_COUNTERPARTIES AND r2.M_PILLAR = r.M_PILLAR AND r2.M_MAXEXPOSURE_NETEXPOSURE < r.M_MAXEXPOSURE_NETEXPOSURE)
) as test
FROM X_LP_PSR_REP r;