Question

I just waste Two to Three Hourse behind This Sql Transact and confused on Null Value Skip.

I have two table like below:

Table 1: AccountMast
companyID   accname         category
102     PURCHASE  ACCOUNT   Purchase Account
102     SALES ACCOUNT       Sales Account

Table2: Legder

companyID   name            
102     PURCHASE ACCOUNT        
102     SALES ACCOUNT       

I have join it as below:

select
case
when a.catagory='Purchase Account' then
l.name 
end as PurchaseAccount,
case
when a.catagory = 'Sales Account' then
l.name   
end as SalesAccount
from ledger l join accountmast a
on l.companyID=a.companyID
and l.name = a.accname
where l.companyID=102
and a.catagory='Purchase Account' or a.catagory='Sales Account'
group by l.name,a.catagory

The Result is:

PurchaseAccount     SaleAccount
PURCHASE ACCOUNT    NULL
NULL                SALES ACCOUNT

But I Want Result Like:

PurchaseAccount     SaleAccount
PURCHASE ACCOUNT    SALES ACCOUNT

How to Do It?

Answer 1

Remove your GROUP BY clause:

select
    max(case when a.catagory = 'Purchase Account' then l.name end) as PurchaseAccount,
    max(case when a.catagory = 'Sales Account' then l.name end) as SalesAccount
from ledger l
join accountmast a
on l.companyID = a.companyID and l.name = a.accname
where l.companyID=102 and a.catagory IN ('Purchase Account', 'Sales Account')