Mehrere Meta-Schlüsselwerte abfragen?

Ich habe das Gefühl,dass hiereine UND/ODER-Verwirrung herrscht.

Die Abfragenim OPgeben nur Posts zurück,die beide key1='value1' UND key2='value2' haben. Diemeisten WP-Plugins (von denenich sowieso weiß) speichernnichtmehrere Wertein Postmetafür denselben Beitragmit demselben Schlüssel.

Wenn Sie wirklichein ODERmöchten (Siemöchten die Beiträgemit key1='value1' sowie die Beiträgemit key1='value2'erhalten),lesen Sie die Antwort von @ WhiskerSandwichmit 'IN' undeinem Array von Wertenfür den Wertparameter.

Alternativ können Sieeinen relation -Parameterfür `meta_query 'angeben:

 $args = array(
    'meta_query' => array(
        'relation' => 'OR',
        array(
            'key' => 'key1',
            'value' => 'value1',
            'compare' => '='
        ),

        array(
            'key' => 'key1',
            'value' => 'value2',
            'compare' => '='
        )
    )
);
 

Beachten Sie,dass die Verwendung von OR als Beziehungfürmehrere Metaabfragenmit demselben Schlüssel dasfunktionale Äquivalent zur Verwendung von IN undeinem Array von Wertenfüreine einzelneist.

I feel like there's an AND/OR confusion going on here.

The queries in the OP will only return posts which have both key1 = 'value1' AND key2 = 'value2'. Most WP plugins (that I know of, anyway) do not store multiple values in postmeta, for the same post, using the same key.

If what you want is really an OR (you want to get the posts where key1 = 'value1', as well as the posts where key1 = 'value2'), then see @WhiskerSandwich's answer, using 'IN' and an array of values for the value parameter.

Alternatively, you can provide a relation parameter to `meta_query':

$args = array(
    'meta_query' => array(
        'relation' => 'OR',
        array(
            'key' => 'key1',
            'value' => 'value1',
            'compare' => '='
        ),

        array(
            'key' => 'key1',
            'value' => 'value2',
            'compare' => '='
        )
    )
);

Note that using OR as the relation for multiple meta queries using the same key is the functional equivalent of using IN and an array of values for a single one.

Ich hatte dasgleiche Problem,bei dem das Übergebenmehrerer Arraysfür denselben Schlüsselnichtfunktionierte.Verwenden Sie stattdessennurein Array,setzen Sie 'value' aufein Array von Werten und setzen Sie 'compare' auf IN:

 <?php

$args = array(
    'meta_query' => array(
        array(
            'key' => 'key1',
            'value' => array('value1', 'value2'),
            'compare' => 'IN'
        ),
    )
);
$query = new WP_Query( $args );

?>
 

I had the same problem where passing multiple arrays for the same key wasn't working. Instead, just use one array, set 'value' to an array of values, and set 'compare' to IN:

<?php

$args = array(
    'meta_query' => array(
        array(
            'key' => 'key1',
            'value' => array('value1', 'value2'),
            'compare' => 'IN'
        ),
    )
);
$query = new WP_Query( $args );

?>

Siemüssen die Postmeta-Tabellefür den zweiten Wert aliasen:

 $querystr = "  
        SELECT $wpdb->posts.* 
        FROM $wpdb->posts, $wpdb->postmeta, $wpdb->postmeta AS mt1
        WHERE $wpdb->posts.ID = $wpdb->postmeta.post_id 

        AND $wpdb->postmeta.meta_key = 'key1'   
        AND $wpdb->postmeta.meta_value = 'value1'
        AND mt1.meta_key = 'key1'
        AND mt1.meta_value = 'value2'

        AND $wpdb->posts.post_status = 'publish' 
        AND $wpdb->posts.post_type = 'post'
        ORDER BY $wpdb->posts.post_date DESC
            ";
 

Sie können diesjetzt seit 3.1 auchmit einer meta_query :

 $args = array(
    'meta_query' => array(
        array(
            'key' => 'key1',
            'value' => 'value1',
            'compare' => '='
        ),
        array(
            'key' => 'key1',
            'value' => 'value2',
            'compare' => '='
        )
    )
);
$query = new WP_Query( $args );
 

$querystr = "  
        SELECT $wpdb->posts.* 
        FROM $wpdb->posts, $wpdb->postmeta, $wpdb->postmeta AS mt1
        WHERE $wpdb->posts.ID = $wpdb->postmeta.post_id 

        AND $wpdb->postmeta.meta_key = 'key1'   
        AND $wpdb->postmeta.meta_value = 'value1'
        AND mt1.meta_key = 'key1'
        AND mt1.meta_value = 'value2'

        AND $wpdb->posts.post_status = 'publish' 
        AND $wpdb->posts.post_type = 'post'
        ORDER BY $wpdb->posts.post_date DESC
            ";

You can also do this now since 3.1 with a meta_query:

$args = array(
    'meta_query' => array(
        array(
            'key' => 'key1',
            'value' => 'value1',
            'compare' => '='
        ),
        array(
            'key' => 'key1',
            'value' => 'value2',
            'compare' => '='
        )
    )
);
$query = new WP_Query( $args );

Schlüsselist Schlüssel1 und die Werte 'Wert1' und 'Wert2' habenesin einer Neuinstallationmit elf versucht,sowohltextlich als auchnumerisch.print_r ($the_query);Arbeitsausgabe siehtnormal aus.Auch versucht key1 und key2funktioniert auchnicht.Esfunktioniert,sobaldiches aufein Arraybeschränke.Mit verschiedenen Browsern überprüft.

Diesfunktioniertjedoch.

     <?php 
$args = array(
    'meta_query' => array(
        array(
            'key' => 'wtf',
            'value' => '1',
            'compare' => '>='
        ),
// this array results in no return for both arrays
        array(
            'key' => 'wtf',
            'value' => '2',
            'compare' => '<='
        )
    )
);
$the_query  = new WP_Query( $args );

 ?>
 

Key is key1 and values 'value1' and 'value2' tried it both text and numeric in a fresh install with twenty eleven. print_r( $the_query ); works output looks normal. Also tried key1 and key2 also doesn't work. It works as soon as I limit it to to one array. Checked with different browsers.

This however does work.

    <?php 
$args = array(
    'meta_query' => array(
        array(
            'key' => 'wtf',
            'value' => '1',
            'compare' => '>='
        ),
// this array results in no return for both arrays
        array(
            'key' => 'wtf',
            'value' => '2',
            'compare' => '<='
        )
    )
);
$the_query  = new WP_Query( $args );

 ?>