Re: [SQL] weird(to me) request

[Adam Wieckowski]

Użytkownik Larry Rosenman napisał:

I have the following rows (in addition to others):

acct_num text,
master_acct_num text,

These are in the same table.

What I want to enforce is that if the master_acct_num field is NOT NULL (it can be NULL, and
that's fine), that the value appears in some row as acct_num. acct_num has a unique index on it, so that's fine.

I'm not sure how to do this....

Thanks!

LER

select
   case
       when master_acct_num is null
           then acct_num
       else master_acct_num
   end
   from table;

did you mained somethink like this ?

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