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Tag: postgresql

SELECT NOT IN with multiple columns in subquery

Regarding the statement below, sltrxid can exist as both ardoccrid and ardocdbid. I’m wanting to know how to include both in the NOT IN subquery. Answer I would recommend not exists: Note that I changed the table aliases to things that are more meaningful. I would strongly recommend prefixing the column names with the table they belong to, so the

Way to suppress PostgreSQL-Error with custom error

For the last hours I got stuck on the problem, that I want a custom error (“Wrong airline_id. Please check your input again”) over the normal error code (insert or update on table “flightplan” violates foreign key constraint “fk_flightplan_airline”). But no matter what I try, I always get the standard error. Please Help. Answer The custom exceptions should be thrown

SQL Sorted Count

I have the following table sorted by date: date id 9/1/20 1 9/1/20 2 9/3/20 1 9/4/20 3 9/4/20 2 9/6/20 1 I’d like to add a count column for each id so that the first count for each id is the earliest date and latest date would receive the highest count for each id: date id count 9/1/20 1

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