One option uses exists and a case expression: select t.*, case when exists ( select 1 from test1 t1 where...
I would use not exists: select t.* from mytable t where not exists ( select 1 from mytable t1 where...
SELECT * FROM YOURTABLE WHERE REASON = 'RETURN' AND POLICYNUMBER NOT IN ( SELECT POLICYNUMBER FROM YOURTABLE WHERE REASON =...
For reference Check here ;with cte as (select dense_rank() over( order by CarID,Location,cast(Date as date)) dr, * from tbl),cte1 as(...
No need for a subquery here. As I understand, you want to store the checksum of column_a in column_b. As...
In your first query, you are including everyone who has not yet turned 19. In your second query, you are...
I think you have specified the syntax for the subquery incorrectly: INVQTY = (SELECT Sum(SINVOICED.QTY_0) AS INVQTY FROM x3v11.PROD.SINVOICED SINVOICED...
One option uses two levels of aggregation. Assuming that month is of a date datatype (or at least something that...