Update statement will not update

Question

What is wrong with this statement?
UPDATE agendasCRA SET agenda = 'co080918agenda.pdf' WHERE ID
= '7'
The table is agendasCRA
The field to be updated is agenda
the data to be updated is co080918agenda.pdf
and the ID field is 7
the agenda field is a varchar(32)
the ID field is an int(10) unsigned auto_increment
When entered as a MySQL command in phpMyAdmin, I get Affected
rows: 0
What am I doing wrong?
Thanks,
Harvey

Answer 1

eclipsme posted in macromedia.dreamweaver:
> Mark A. Boyd wrote:
>> eclipsme posted in macromedia.dreamweaver:
>>
>>> What is wrong with this statement?
>>>
>>> UPDATE agendasCRA SET agenda =
'co080918agenda.pdf' WHERE ID =
>>> '7'
>>>
>>> The table is agendasCRA
>>> The field to be updated is agenda
>>> the data to be updated is co080918agenda.pdf
>>> and the ID field is 7
>>>
>>> the agenda field is a varchar(32)
>>> the ID field is an int(10) unsigned
auto_increment
>>>
>>> When entered as a MySQL command in phpMyAdmin, I
get Affected
>>> rows: 0
>>
>> That can happen if there is no record existing yet
where ID = 7
>>
>> or
>>
>> if agenda already contains co080918agenda.pdf
(nothing to update)
>>
> There is an existing record wither ID = 7
> The agenda field for ID 7 is empty
>
> Any other ideas?
Maybe adding back ticks to the field names?
UPDATE `agendasCRA` SET `agenda` = 'co080918agenda.pdf' WHERE
ID = 7
But I just did a test on my local server that worked fine
with the
following three (emptying the agenda field between tests).
The first is
copied directly from your OP.
UPDATE agendasCRA SET agenda = 'co080918agenda.pdf' WHERE ID
= '7'
UPDATE agendasCRA SET agenda = 'co080918agenda.pdf' WHERE ID
= 7
UPDATE `agendasCRA` SET `agenda` = 'co080918agenda.pdf' WHERE
ID = 7
I can't seem to make it fail. BTW, here is the table I used:
CREATE TABLE `agendascra` (
`ID` int(11) NOT NULL auto_increment,
`agenda` varchar(32) NOT NULL,
PRIMARY KEY (`ID`)
) ENGINE=MyISAM;
Followed by 7 empty inserts.
Mark A. Boyd
Keep-On-Learnin' :)