Re: MonetDB-PHP Error on parameterized query with timestamp

9 Dec 2020


      Thank you Ying and everyone involved.
Regards,
Kevork Vartanian
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Today's Topics:
1. Re: MonetDB-PHP Error on parameterized query with timestamp
      (Ying Zhang)
----------------------------------------------------------------------
Message: 1
Date: Wed, 9 Dec 2020 15:56:28 +0100
From: Ying Zhang Y.Zhang@cwi.nl
To: Communication channel for MonetDB users users-list@monetdb.org
Subject: Re: MonetDB-PHP Error on parameterized query with timestamp
Message-ID: 6F309253-9D88-4E52-B079-2F2CBDCF1B81@cwi.nl
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FYI, this error has really been resolved.
Deployed a fix under version 1.1.3., for more info see Stack Overflow:
- https://stackoverflow.com/questions/65077831/monetdb-php-error-on-parameteri... https://stackoverflow.com/questions/65077831/monetdb-php-error-on-parameterized-query-with-timestamp/65205631
Updated the user doc:
- https://github.com/MonetDB/MonetDB-PHP#example-3-parameterized-query-with-pr... https://github.com/MonetDB/MonetDB-PHP#example-3-parameterized-query-with-prepared-statement
And the protocol doc:
- https://github.com/MonetDB/MonetDB-PHP/blob/master/protocol_doc/README.md#7-... https://github.com/MonetDB/MonetDB-PHP/blob/master/protocol_doc/README.md#7-prepared-statements
...
On 8 Dec 2020, at 10:45, Ying Zhang Y.Zhang@cwi.nl wrote:
Hai Kevork,
Our MonetDB/PHP expert has answered this question in Stack Overflow:
https://stackoverflow.com/questions/65077831/monetdb-php-error-on-parameteri... https://stackoverflow.com/questions/65077831/monetdb-php-error-on-parameterized-query-with-timestamp
For users on this list, this is the Stack Overflow answer:
the problem is that the "birth_date" field is not of a "date-time" type, but it's "date" only. So just remove "12:37:16" and it will work. The "char" type is converted to "date" by MonetDB itself, "date" doesn't have a specific literal in the SQL language. This works, I tested:
$result = $connection->Query(<<<EOF
        select
                *
        from
                "cats"
        where
                "name" = ?
                and "weight_kg" > ?
                and "birth_date" < ?
        limit
                10
EOF
, [ "D'artagnan", 5.3, "2020-02-28" ]);
Regards,
Jennie
...
On 7 Dec 2020, at 04:23, Kevork Vartanian <kev@innotta.com.au mailto:kev@innotta.com.au> wrote:
Hi Sjoerd,
Thank you for getting back to me.
My colleague tested what you suggested and got the same error so it is still failing. He is certain he is passing the correct value as he is able to execute the same query in raw format, so he believed it has to do with the way params are implemented. I'm no expert but he said it looks like an error from C language.
Please advise.
Thank you.
Regards,
Kevork Vartanian
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Today's Topics:

MonetDB-PHP Error on parameterized query with timestamp
(Kevork  Vartanian)
Re: MonetDB-PHP Error on parameterized query with timestamp
(Sjoerd Mullender)


Message: 1
Date: Fri, 4 Dec 2020 00:11:59 +0000
From: "Kevork  Vartanian" <kev@innotta.com.au mailto:kev@innotta.com.au>
To: "users-list@monetdb.org mailto:users-list@monetdb.org" <users-list@monetdb.org mailto:users-list@monetdb.org>
Subject: MonetDB-PHP Error on parameterized query with timestamp
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Hi,
The below is from my colleague who is not a member on this list, so I'm sending on his behalf.
I'm using MonetDB with MonetDB-PHP library.
I have followed the documentation from: https://github.com/MonetDB/MonetDB-PHP https://github.com/MonetDB/MonetDB-PHP
Everything is working fine, but if I set parameter for timestamp type column I get the following error:
Error from MonetDB: 42000!Wrong type for argument 1 of function call: char, expected timestamp
For example, this is working:
$result = $connection->Query('
    select
        *
    from
        "cats"
    where
        "name" = ?
        and "weight_kg" > ?
    limit
        10', [ "D'artagnan", 5.3 ]);
but this will not work:
$result = $connection->Query('
    select
        *
    from
        "cats"
    where
        "name" = ?
        and "weight_kg" > ?
        and "birthdate" < ? // timestamp data type
    limit
        10
', [ "D'artagnan", 5.3, "2020-02-28 12:37:16" ]);
The error occurs for any column that is of timestamp type and only when passing value as parameter.
What am I doing wrong?
Thank you.
Regards,
Kevork Vartanian
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Kevork Vartanian

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