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select case when help

Author

Topic

shorsh
Starting Member

1 Post

Posted - 2014-10-23 : 14:35:09

Hi - I have two tables (tbl1 and tbl2). based on m_code value in tbl1, I want to display P_CODE and E_CODE fields in tbl2 certain way. Below is how I want to write my query, I appreciate if you please help me with correcting the query!

select
case
when e.m_code = 'S' then s.P_CODE = 1 and s.E_CODE = 1
when e.m_code = 'H' then s.P_CODE = 2 and s.E_CODE =1
when e.m_code = 'E' then s.P_CODE = 3 and s.E_CODE =1
when e.m_code = 'P' then s.P_CODE = 3 and s.E_CODE = 1
when e.m_code ='R' then s.P_CODE = 3 and s.E_CODE =1
end

from
tbl1 e
join tbl2 s on e.field = s.field
where ese.m_code in (
'S',
'H',
'E',
'P',
'R')

gbritton
Master Smack Fu Yak Hacker

2780 Posts

Posted - 2014-10-23 : 14:38:11

[code]
select
case
when e.m_code = 'S' and s.E_CODE = 1 then 1
when e.m_code = 'H' and s.E_CODE =1 then 2
when e.m_code = 'E' and s.E_CODE =1 then 3
when e.m_code = 'P' and s.E_CODE = 1 then 3
when e.m_code ='R' and s.E_CODE = 1 then 3
end as P_CODE

[/code]

visakh16
Very Important crosS Applying yaK Herder

52326 Posts

Posted - 2014-10-25 : 15:41:25

[code]
select
P_CODE = case
when e.m_code = 'S' then 1
when e.m_code = 'H' then 2
when e.m_code IN ('E','P','R') then 3
end,
s.E_CODE =1

from
tbl1 e
join tbl2 s on e.field = s.field
where ese.m_code in (
'S',
'H',
'E',
'P',
'R')
[/code]

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