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In `WP_Meta_Query`, don't cast `meta_value` to `CHAR`. 

`CHAR` is redundant, since the `meta_value` column is `LONGTEXT`. Meanwhile,
use of `CAST()` causes MySQL to ignore any index that the administrator may
have added to the column.

A number of automated tests were doing searches for `CAST` in the SQL strings
generated by `WP_Meta_Query` (for reasons unrelated to the `CAST()` behavior).
These tests have been updated to expect the new query format.

Props ericlewis.
Fixes #36625.

git-svn-id: https://develop.svn.wordpress.org/trunk@37594 602fd350-edb4-49c9-b593-d223f7449a82
This commit is contained in:
Boone Gorges 2016-05-30 04:35:16 +00:00
parent 23d0c953d2
commit cb5b8479f0
2 changed files with 11 additions and 7 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
src/wp-includes/class-wp-meta-query.php
View File

@ -632,7 +632,11 @@ class WP_Meta_Query {
}
if ( $where ) {
$sql_chunks['where'][] = "CAST($alias.meta_value AS {$meta_type}) {$meta_compare} {$where}";
if ( 'CHAR' === $meta_type ) {
$sql_chunks['where'][] = "$alias.meta_value {$meta_compare} {$where}";
} else {
$sql_chunks['where'][] = "CAST($alias.meta_value AS {$meta_type}) {$meta_compare} {$where}";
}
}
}

12
tests/phpunit/tests/meta/query.php
View File

@ -493,7 +493,7 @@ class Tests_Meta_Query extends WP_UnitTestCase {
) );
$sql = $query->get_sql( 'post', $wpdb->posts, 'ID', $this );
$this->assertEquals( 1, substr_count( $sql['where'], "CAST($wpdb->postmeta.meta_value AS CHAR) = ''" ) );
$this->assertEquals( 1, substr_count( $sql['where'], "$wpdb->postmeta.meta_value = ''" ) );
}
/**
@ -601,7 +601,7 @@ class Tests_Meta_Query extends WP_UnitTestCase {
$sql = $query->get_sql( 'post', $wpdb->posts, 'ID', $this );
$this->assertSame( 1, substr_count( $sql['where'], "CAST($wpdb->postmeta.meta_value AS CHAR) = ''" ) );
$this->assertSame( 1, substr_count( $sql['where'], "$wpdb->postmeta.meta_value = ''" ) );
}
public function test_get_sql_convert_lowercase_compare_to_uppercase() {
@ -632,7 +632,7 @@ class Tests_Meta_Query extends WP_UnitTestCase {
$sql = $query->get_sql( 'post', $wpdb->posts, 'ID', $this );
$this->assertSame( 1, substr_count( $sql['where'], "CAST($wpdb->postmeta.meta_value AS CHAR) IN" ) );
$this->assertSame( 1, substr_count( $sql['where'], "$wpdb->postmeta.meta_value IN" ) );
}
public function test_get_sql_empty_meta_compare_with_non_array_value() {
@ -647,7 +647,7 @@ class Tests_Meta_Query extends WP_UnitTestCase {
$sql = $query->get_sql( 'post', $wpdb->posts, 'ID', $this );
$this->assertSame( 1, substr_count( $sql['where'], "CAST($wpdb->postmeta.meta_value AS CHAR) =" ) );
$this->assertSame( 1, substr_count( $sql['where'], "$wpdb->postmeta.meta_value =" ) );
}
public function test_get_sql_invalid_meta_compare() {
@ -663,7 +663,7 @@ class Tests_Meta_Query extends WP_UnitTestCase {
$sql = $query->get_sql( 'post', $wpdb->posts, 'ID', $this );
$this->assertSame( 1, substr_count( $sql['where'], "CAST($wpdb->postmeta.meta_value AS CHAR) =" ) );
$this->assertSame( 1, substr_count( $sql['where'], "$wpdb->postmeta.meta_value =" ) );
}
/**
@ -760,7 +760,7 @@ class Tests_Meta_Query extends WP_UnitTestCase {
$sql = $query->get_sql( 'post', $wpdb->posts, 'ID', $this );
$this->assertSame( 1, substr_count( $sql['where'], "CAST($wpdb->postmeta.meta_value AS CHAR) = 'bar'" ) );
$this->assertSame( 1, substr_count( $sql['where'], "$wpdb->postmeta.meta_value = 'bar'" ) );
}
public function test_not_exists() {