Re: How to allow null as an option when using regexp_matches? - Mailing list pgsql-general

Am Wed, Dec 08, 2021 at 12:07:13PM +0000 schrieb Shaozhong SHI:

> We can do this:
> select count(*) from regexp_matches('Great London', 'Great
> London|Information Centre|Department for Transport', 'g');
>
> Is it possible to allow null as an option?  something like this
> select count(*) from regexp_matches('Great London', 'null|Great
> London|Information Centre|Department for Transport', 'g');

You seem to want to apply coalesce() judiciously.

Best,
Karsten
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