Syntax error “Missing keyword” in case statement in WHERE clause

Question

I am having some syntax error in my case statement where I am checking below condition:

((RAP10B.CLMSRC = \'2\', RAP01.EFFDT - 3 years <= RAP10.LOSSDT < RA         


        

Answer 1

It's generally much better to use AND/OR constructions in the WHERE clause instead of case expressions:

WHERE (RAP10B.CLMSRC = '2'
       AND rap10.lossdt_t BETWEEN Add_months(rap01.teffdt_t, - 36) AND rap01.teffdt_t)
   OR (RAP10B.CLMSRC <> '2'
       AND rap10.lossdt_t BETWEEN Add_months(rap01.teffdt_t, - 36) AND (rap01.teffdt_t - 60))