Database 将Oracle过程移植到PostgreSQL
我正在将Oracle函数移植到Postgres PGPLSQL中。。我一直在使用本指南: 我已经做到了这一点:Database 将Oracle过程移植到PostgreSQL,database,oracle,postgresql,Database,Oracle,Postgresql,我正在将Oracle函数移植到Postgres PGPLSQL中。。我一直在使用本指南: 我已经做到了这一点: CREATE OR REPLACE FUNCTION DATA_UPDATE (NUMERIC, NUMERIC) RETURNS integer as ' DECLARE mission ALIAS for $1; task ALIAS for $2; BEGIN IF mission IS NOT NULL THEN UPDATE MISSIO
CREATE OR REPLACE FUNCTION DATA_UPDATE
(NUMERIC,
NUMERIC)
RETURNS integer as '
DECLARE
mission ALIAS for $1;
task ALIAS for $2;
BEGIN
IF mission IS NOT NULL THEN
UPDATE MISSION_OBJECTIVE MO
SET (MO.MO_TKR_TOTAL_OFF_SCHEDULED,
MO.MO_TKR_TOTAL_RECEIVERS) =
(SELECT COALESCE(SUM(RR.TRQ_FUEL_OFFLOAD),0),
COALESCE(SUM(RR.TRQ_NUMBER_RECEIVERS),0)
FROM REFUELING_REQUEST RR, MISSION_REQUEST_PAIRING MRP
WHERE MO.MSN_INT_ID = MRP.MSN_INT_ID
AND MO.MO_INT_ID = MRP.MO_INT_ID
AND MRP.REQ_INT_ID = RR.REQ_INT_ID)
WHERE MO.MSN_INT_ID = mission
AND MO.MO_INT_ID = task ;
END IF;
COMMIT;
END;
' LANGUAGE plpgsql;
这是我得到的错误:
ERROR: syntax error at or near "SELECT"
LINE 1: ...OTAL_OFF_SCHEDULED, MO.MO_TKR_TOTAL_RECEIVERS) = (SELECT COA...
我不知道为什么这不起作用。。。有什么想法吗?我认为Postgres不支持这种更新结构(我尝试的简单测试失败了,出现了相同的错误)。您可能需要执行以下操作:
CREATE OR REPLACE FUNCTION DATA_UPDATE
(mission NUMERIC,
task NUMERIC)
RETURNS void as '
DECLARE
offScheduled int4;
totalReceivers int4;
BEGIN
IF mission IS NOT NULL THEN
select COALESCE(SUM(RR.TRQ_FUEL_OFFLOAD),0),
COALESCE(SUM(RR.TRQ_NUMBER_RECEIVERS),0) into offScheduled, totalReceivers
FROM REFUELING_REQUEST RR, MISSION_REQUEST_PAIRING MRP
WHERE MO.MSN_INT_ID = MRP.MSN_INT_ID
AND MO.MO_INT_ID = MRP.MO_INT_ID
AND MRP.REQ_INT_ID = RR.REQ_INT_ID;
UPDATE MISSION_OBJECTIVE MO
SET MO.MO_TKR_TOTAL_OFF_SCHEDULED = offScheduled,
MO.MO_TKR_TOTAL_RECEIVERS = totalReceivers
WHERE MO.MSN_INT_ID = mission
AND MO.MO_INT_ID = task ;
END IF;
END;
' LANGUAGE plpgsql;
。。。假设我没有把逻辑弄得太糟;)
我随意更改了参数的定义方式和返回类型(因为看起来您实际上没有从函数返回任何内容?)
编辑:哎呀,我对
select-into
..使用了错误的构造。PostgreSQL在其更新语法中支持FROM扩展
所以像这样的东西可以为你工作
UPDATE MISSION_OBJECTIVE MO
SET MO.MO_TKR_TOTAL_OFF_SCHEDULED = COALESCE(SUM(RR.TRQ_FUEL_OFFLOAD),0),
MO.MO_TKR_TOTAL_RECEIVERS) = COALESCE(SUM(RR.TRQ_NUMBER_RECEIVERS),0)
FROM REFUELING_REQUEST RR, MISSION_REQUEST_PAIRING MRP
WHERE MRP.MSN_INT_ID = mission
AND MRP.MO_INT_ID = task
AND MRP.REQ_INT_ID = RR.REQ_INT_ID
AND MO.MSN_INT_ID = MRP.MSN_INT_ID
AND MO.MO_INT_ID = MRP.MO_INT_ID
UPDATE MISSION_OBJECTIVE MO
SET MO.MO_TKR_TOTAL_OFF_SCHEDULED = COALESCE(SUM(RR.TRQ_FUEL_OFFLOAD),0),
MO.MO_TKR_TOTAL_RECEIVERS) = COALESCE(SUM(RR.TRQ_NUMBER_RECEIVERS),0)
FROM REFUELING_REQUEST RR, MISSION_REQUEST_PAIRING MRP
WHERE MRP.MSN_INT_ID = mission
AND MRP.MO_INT_ID = task
AND MRP.REQ_INT_ID = RR.REQ_INT_ID
AND MO.MSN_INT_ID = MRP.MSN_INT_ID
AND MO.MO_INT_ID = MRP.MO_INT_ID