[wp-hackers] Seeing the Actual SQL statements WP is running when compiling the posts...

[IC IC]

Mike,
I tried the snippet as follows;

<?php

include 'wp-load.php';
$query = new WP_Query('cat=1&tag=apples+oranges');
echo $query->request;

and that printed out this;


//SELECT SQL_CALC_FOUND_ROWS wp_posts.* FROM wp_posts WHERE 1=1 AND 0
= 1 AND wp_posts.post_type = 'post' AND (wp_posts.post_status =
'publish') GROUP BY wp_posts.ID ORDER BY wp_posts.post_date DESC LIMIT
0, 9

my two questions here are

//where is the word category in this SQL? it's like query_posts not
being tracked.
//and more interestingly what's 0=1 part doing in there. Wouldn't it
make sure that where part matches nothing?

?>



On Fri, Dec 2, 2011 at 8:21 PM, Mike Schinkel
<mikeschinkel at newclarity.net> wrote:
> On Dec 2, 2011, at 11:02 PM, IC IC wrote:
>> Is there a way to see/output the actual SQL query wp runs for
>> compiling the current page record(s)?
>>
>> For learning purposes, I'd like to see what SQL query runs when we say
>>
>> query_posts( 'cat=1&tag=apples+apples' );
>>
>> or when I am serving a taxonomy page such as
>>
>> mysite.com/fruits/apple
>>
>> what's the SQL query WP is running? Can I hook into that section and
>> output the SQL statement on the screen?
>
> What dd32 said, or here is a standalone file (maybe name it "test.php"?) which can run in your website's root to display the SQL query you ask for:
>
>
> <?php
>
> include 'wp-load.php';
> $query = new WP_Query('cat=1&tag=apples+apples');
> echo $query->request;
>
>
> -Mike
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