ecode含義解釋:
decode(條件,值1,返回值1,值2,返回值2,...值n,返回值n,缺省值)
該函數的含義如下:
IF 條件=值1 THEN
RETURN(翻譯值1)
ELSIF 條件=值2 THEN
RETURN(翻譯值2)
......
ELSIF 條件=值n THEN
RETURN(翻譯值n)
ELSE
RETURN(缺省值)
END IF
實例:
decode(upper(substr(bd_defdoc1.name,1,1)),'A',1,'B',2,'C',3,'D',4,'E',5,'F',6,'G',7)
decode(substr(org.code,1,2),'HK',decode(job.pk_dept,'10016H100000000006XZ',4,2),'TA',3,1)