if exists statement between a case when condition sql -


in middle of stored procedure, have following snippet of code:

case   when l.codeleasestatuscode = '5' , priorleaseid null    , l.leaid in(select col1 waitlisthousehold) '2' else l.codeleasestatuscode end

however, final condition, wherein have select table waitlisthousehold, has issue. not databases has table. want last condition included when table exists. i'm getting errors when try this:

case when l.codeleasestatuscode = '5' , priorleaseid null if exists(select * information_schema.tables table_name='waitlisthousehold')   begin     , l.leaid in(select col1 waitlisthousehold)   end '2' else l.codeleasestatuscode end

so how do correctly?

this snippet inside statement(from table1 join table2 b on a.id=b.id , case when..)

you can have case when clause inside 1 check if table exist or not

case when l.codeleasestatuscode = '5' , priorleaseid null     case when exists(select * information_schema.tables table_name='waitlisthousehold')                     case when l.leaid in(select col1 waitlisthousehold) '2'              else l.codeleasestatuscode end         else '2' end               '2'end else l.codeleasestatuscode end

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