Re: COUNT

From: Alvaro Herrera <alvherre(at)commandprompt(dot)com>
To: Javier Estévez CIFA Córdoba <javier(dot)estevez(dot)ext(at)juntadeandalucia(dot)es>
Cc: Jaime Casanova <systemguards(at)gmail(dot)com>, pgsql-es-ayuda(at)postgresql(dot)org
Subject: Re: COUNT
Date: 2006-02-27 14:43:41
Message-ID: 20060227144341.GE5755@surnet.cl
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Javier Estévez CIFA Córdoba escribió:
> Tengo la siguiente consulta:
>
> SELECT "IdProvincia", "IdEstacion", count(*)
> FROM ria_day a JOIN ria_mes_avg_std b USING ("IdProvincia","IdEstacion",mes)
> WHERE a."IdProvincia"=b."IdProvincia" AND a."IdEstacion"=b."IdEstacion" AND
> a.mes=b.mes
> AND a."TempMax"<b."TxAVGmes"-2.0*"TxSTDmes" OR
> a."TempMax">b."TxAVGmes"+2.0*"TxSTDmes"
> GROUP by "IdProvincia", "IdEstacion"
> ORDER by "IdProvincia", int2("IdEstacion")

Creo que seria algo asi

SELECT "IdProvincia", "IdEstacion", count(*)
FROM ria_day a LEFT JOIN ria_mes_avg_std b
ON (a."IdProvincia" = b."IdProvincia" AND
a."IdEstacion" = b."IdEstacion" AND
a.mes = b.mes AND
a."TempMax" BETWEEN b."TxAVGmes"-2.0*"TxSTDmes" AND b."TxAVGmes"+2.0*"TxSTDmes")
GROUP by "IdProvincia", "IdEstacion"
ORDER by "IdProvincia", int2("IdEstacion")

--
Alvaro Herrera http://www.CommandPrompt.com/
The PostgreSQL Company - Command Prompt, Inc.

In response to

  • Re: COUNT at 2006-02-27 12:23:37 from Javier Estévez CIFA Córdoba

Responses

  • Re: COUNT at 2006-03-01 08:18:37 from Javier Estévez CIFA Córdoba

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