I am trying to filter a table for specific markets by using a subquery. I want to include all null values and exclude the markets that are included in the subquery.
SELECT l.market
FROM lease
WHERE l.market != ANY(SELECT market FROM market_cte) OR l.market IS NULL
This query isn't filtering out the markets I want to get rid of.
SELECT l.market
FROM lease
WHERE l.market NOT IN (SELECT id FROM market_cte) OR l.market IS NULL
And this created a SQL compilation error.
When I list the markets I want to exclude individually, the query works but I am trying to make it more dynamic.
SELECT l.market
FROM lease
WHERE l.market NOT IN (1,2,3) OR l.market IS NULL
I would just use not exists
:
select market
from lease l
where not exists (select 1 from market_cte c where c.id = l.market)
Note that this will allow records where market
is null
(since, in this case, c.id = l.market
will never be fullfilled).
Another option is to use the left join
antipattern:
select l.market
from lease l
left join market_cte c on c.id = l.market
where c.id is null
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