From: | "Pavel Stehule" <pavel(dot)stehule(at)gmail(dot)com> |
---|---|
To: | Rodrigo E(dot) De León Plicet <rdeleonp(at)gmail(dot)com> |
Cc: | emilu(at)encs(dot)concordia(dot)ca, "PostgreSQL SQL List" <pgsql-sql(at)postgresql(dot)org> |
Subject: | Re: String function to Find how many times str2 is in str1? |
Date: | 2008-02-15 18:23:12 |
Message-ID: | 162867790802151023i5a2276bj17f3f666aa4e6827@mail.gmail.com |
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Thread: | |
Lists: | pgsql-sql |
Hello
what about
CREATE OR REPLACE FUNCTION Foobar(text, text)
RETURNS integer AS $$
SELECT array_upper(string_to_array($1,$2),1) - 1;
$$ LANGUAGE SQL IMMUTABLE;
On 15/02/2008, Rodrigo E. De León Plicet <rdeleonp(at)gmail(dot)com> wrote:
> On Fri, Feb 15, 2008 at 11:09 AM, Emi Lu <emilu(at)encs(dot)concordia(dot)ca> wrote:
> > Str1 = "test test caa dtest testing EndofString";
> > Str2 = " ";
> >
> > select funcName(Str1, Str2);
> >
> > return 5
>
>
> CREATE OR REPLACE FUNCTION
> FOOBAR(TEXT,TEXT)
> RETURNS INT AS $$
> SELECT(LENGTH($1) - LENGTH(REPLACE($1, $2, ''))) / LENGTH($2) ;
> $$ LANGUAGE SQL IMMUTABLE;
>
> SELECT FOOBAR('test test caa dtest testing EndofString', ' ');
>
> foobar
> --------
> 5
> (1 row)
>
> Good luck.
>
> ---------------------------(end of broadcast)---------------------------
> TIP 2: Don't 'kill -9' the postmaster
>
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Next Message | Emi Lu | 2008-02-15 18:28:14 | Re: String function to Find how many times str2 is in str1? |
Previous Message | Dean Gibson (DB Administrator) | 2008-02-15 18:18:56 | Re: FUNCTIONs and CASTs |