如何将此Query转换为ORACLE命令

Question

如何写

IFF(ISNULL(PARNT_TOUR_PCKG), 'VOI', 'TRIAL') = TOUR_TP.SRC_RFRNC_ID 

在Oracle中

Answer 1

在where子句中尝试这个

CASE WHEN PARNT_TOUR_PCKG IS NULL THEN  'VOI' ELSE 'TRIAL' END = TOUR_TP.SRC_RFRNC_ID

Answer 2

您可以在Oracle中使用SELECT row FROM table WHERE field1 LIKE 'value_%_topic' AND field2 LIKE 'value_%_name' AND SUBSTRING(field1, 7, 1) = SUBSTRING(field2, 7, 1);

NVL2()

WHERE NVL2(PARNT_TOUR_PCKG,'TRIAL', 'VOI') = TOUR_TP.SRC_RFRNC_ID