WordPress Developer Resources

apply_filters_ref_array( ‘posts_distinct’, string $distinct, WP_Query $query )

Filters the DISTINCT clause of the query.

Parameters

$distinctstring: The DISTINCT clause of the query.
$queryWP_Query: The WP_Query instance (passed by reference).

More Information

Returning “DISTINCTROW” from the filter has the same effect on the query as “DISTINCT”.

Source

$distinct = apply_filters_ref_array( 'posts_distinct', array( $distinct, &$this ) );

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Changelog

Version	Description
2.1.0	Introduced.

User Contributed Notes

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Steven Lin 4 years ago

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Example Migrated from Codex:

Eliminate duplicates in posts returned, unless the duplicates is allowed
```
add_filter('posts_distinct', 'search_distinct');

function search_distinct() {
	if ( $this->allow_duplicates )
		return ""; // filter has no effect
	return "DISTINCT";
}
```
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