Re: select an entry with a NULL date field

From: "<Miguel Sofer" <mig(at)utdt(dot)edu>
To: web(at)inter-resa(dot)com
Cc: pgsql-sql(at)postgresql(dot)org
Subject: Re: select an entry with a NULL date field
Date: 2000-08-14 18:06:44
Message-ID: 200008141806.OAA08698@ant.utdt
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Try
select entry_id from tbl_date where date_02 is NULL;

miguel sofer

>
>Hello,
>
>
>I have a problem with PostgreSQL when I try to select or delete an entry
>with an empty date. That's a typical entry
>
>Table tbl_date
>-----------------------------
>entry_id 154
>date_01 2000-01-15
>date_02 this date is NULL
>name my_test
>-----------------------------
>
>I want to select every entry containing date_02 as NULL
>I tried :
>>select entry_id from tbl_date where date_02=NULL;
>ERROR: parser: parse error at or near "null"
>>select entry_id from tbl_date where date_02='';
>Not work, that's a wrong date format
>>select entry_id from tbl_date where date_02="";
>Not work, "" considered as an attribute
>
>Thank you for your time!
>--
>~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>Marc Andre Paquin
>

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