By : user2950221
Date : November 17 2020, 11:52 AM
this one helps. The following is a simple query that I am running to rectify NULLs by making them '0': , how about COALESCE?
code :
 SELECT COALESCE(`R.P`, '0') as 'RectifyNull'
    RBase r

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case statement only on column that is not null

case statement only on column that is not null

By : Constantin Vrabie
Date : March 29 2020, 07:55 AM
wish of those help I'm writing a query that searches for people over 18 based on their birthdate and the current date. There are some instances where a person does not have a birth date in the database. For these people I just want to include them in my query and not perform the where clause on them. Is this possible? This is a db2 database , Instead of a CASE just use OR:
code :
select *
from people i
where (coalesce(i.birth_date) != '' AND (i.birth_date < (SELECT CURRENT_DATE - 18 years from datetoday)))
  OR  coalesce(i.birth_date) = ''
Can you change the value of a column that is NULL using a CASE?

Can you change the value of a column that is NULL using a CASE?

By : J. Rothwell
Date : March 29 2020, 07:55 AM
I think the issue was by ths following , You can certainly use the is [not] null predicate like so:
code :
    when t.Column1 is null then '1/1/2001'
    else t.Column1
from Table1 as t
 isnull(t.Column1, '1/1/2001')
from Table1 as t
 coalesce(t.Column1, '1/1/2001')
from Table1 as t
SQL Case Statement NULL column

SQL Case Statement NULL column

By : mvatlarge
Date : March 29 2020, 07:55 AM
wish help you to fix your issue It looks like you can use COALESCE to achieve your goal without an explicit conditional:
code :
  (Total_Retail_Price - (Total_Retail_Price * COALESCE(Discount, 0))) * Quantity AS Rev
FROM DATA.Cumulative_Profit_2013 AS P
Why sql case is not working on null condition of int column

Why sql case is not working on null condition of int column

By : Hugo Aguilar
Date : March 29 2020, 07:55 AM
fixed the issue. Will look into that further I have used SQL CASE statement on an INT type of column of a table. Following is the SQL table schema and query which is working fine. , try:
code :
TSQL: CASE if one column of a row is NULL every other column will be set NULL depending on another row

TSQL: CASE if one column of a row is NULL every other column will be set NULL depending on another row

By : user2277984
Date : March 29 2020, 07:55 AM
like below fixes the issue this is my first question on stackoverflow so sorry if its not that understandable. I don't know if this is even possible. , You can apply a Windowed Aggregate:
code :
        case when -- any of the rows for a filial for a NULL
                  min(case when Like_for_like_sales is null then 0 end)
                  over (partition by Filial_number) = 0 
             then null
             else Like_for_like_sales
FROM    test 
ORDER BY Filial_number,
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