在Select语句中使用if条件

Question

I am trying to use the if condition in the select query of the Oracle database. The columns should be set to some value depending on the value like the below is what I tried

Select if(expvalue.DATA = '0','Unpublished','Published') as STATUS from

DATA field is a Boolean so I want to set the Status to be Unpublished if the Boolean is 0 and published if it is 1.But the above syntax gives error like

ORA-00907: missing right parenthesis 00907. 00000 - "missing right parenthesis"

Answer 1

您可以使用CASE语句：

select case when expvalue.DATA = '0' THEN 'Unpublished' ELSE 'Published' END AS STATUS from...