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From: Bryan Sayer <[email protected]>
To: [email protected]
Subject: Re: Extract only maximum date from column
Date: Thu, 4 Dec 2025 15:24:40 -0500
Message-ID: <[email protected]> (raw)
In-Reply-To: <[email protected]>
References: <[email protected]>
	<[email protected]>
	<[email protected]>

You don't include the where clause, just the having clause after the 
group by.

At least that is what I remember. But it has been awhile.

*Bryan Sayer*
Retired Demographer/Statistician
/In a world in which you can be anything, *be kind*/
On 12/4/2025 3:13 PM, Rich Shepard wrote:
> On Thu, 4 Dec 2025, Bryan Sayer wrote:
>
>> I believe in general you need
>>
>> having c.next_contact = max(c.next_contact)
>>
>> (at least in ANSI SQL) Use having for after the join has occurred
>
> Bryan,
>
> Postgresql didn't like that regardless of where I inserted the `having'
> stanza.
>
> Thanks,
>
> Rich
>
>

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