FIND_IN_SET
| От | Michael Eshom |
|---|---|
| Тема | FIND_IN_SET |
| Дата | |
| Msg-id | 4B21E50A.7090404@oldiesmann.us обсуждение исходный текст |
| Ответы |
Re: FIND_IN_SET
|
| Список | pgsql-sql |
I am on the marketing team for a popular forum system, and am also the primary PostgreSQL tester/bugfixer. Currently our forum system treats MySQL's FIND_IN_SET() as a boolean (eg whether or not the specified value was found in the given set), which is fine since MySQL will treat any integer greater than 0 as boolean true and 0 as boolean false. I have already managed to write a FIND_IN_SET() function for Postgres that behaves as boolean. However, we would like to be able to use the true functionality of this function (so it will return an integer instead of boolean).
This is where I've run into a problem. The mysqlcompat package has a FIND_IN_SET() in it, but it requires plpgsql, and I'd rather not require something that a regular user can't install themselves, regardless of how simple it is for the host to add it.
I did find another version of FIND_IN_SET() on a blog with several other MySQL-compatible functions, and while it uses regular SQL, it requires the generate_subscripts() function which isn't available in Postgres 8.1 - the latest version officially supported by CentOS.
Is there a way to do this without requiring plpgsql or generate_subscripts?
This is where I've run into a problem. The mysqlcompat package has a FIND_IN_SET() in it, but it requires plpgsql, and I'd rather not require something that a regular user can't install themselves, regardless of how simple it is for the host to add it.
I did find another version of FIND_IN_SET() on a blog with several other MySQL-compatible functions, and while it uses regular SQL, it requires the generate_subscripts() function which isn't available in Postgres 8.1 - the latest version officially supported by CentOS.
Is there a way to do this without requiring plpgsql or generate_subscripts?
--
Michael "Oldiesmann" Eshom
Christian Oldies Fan
Cincinnati, Ohio
Michael "Oldiesmann" Eshom
Christian Oldies Fan
Cincinnati, Ohio
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