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Do not create alter table statements for differences of case in field type #9868

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Do not create alter table statements for differences of case in field type #9868

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8193ea7
Do not create alter table statements for differences of case in field…
leewillis77 Sep 14, 2025
0fed263
Add test
leewillis77 Sep 14, 2025
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2 changes: 1 addition & 1 deletion src/wp-admin/includes/upgrade.php
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Original file line number Diff line number Diff line change
Expand Up @@ -3201,7 +3201,7 @@ function dbDelta( $queries = '', $execute = true ) { // phpcs:ignore WordPress.N
$fieldtype_base = strtok( $fieldtype_without_parentheses, ' ' );

// Is actual field type different from the field type in query?
if ( $tablefield->Type !== $fieldtype ) {
if ( $tablefield->Type !== $fieldtype_lowercased ) {
$do_change = true;
if ( in_array( $fieldtype_lowercased, $text_fields, true ) && in_array( $tablefield_type_lowercased, $text_fields, true ) ) {
if ( array_search( $fieldtype_lowercased, $text_fields, true ) < array_search( $tablefield_type_lowercased, $text_fields, true ) ) {
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25 changes: 25 additions & 0 deletions tests/phpunit/tests/db/dbDelta.php
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Expand Up @@ -1090,4 +1090,29 @@ public function test_column_type_change_with_hyphens_in_name() {
$updates
);
}

/**
* @ticket 59481
*/
public function test_column_types_are_not_case_sensitive() {
global $wpdb;

$updates = dbDelta(
"
CREATE TABLE {$wpdb->prefix}dbdelta_test (
id bigint(20) NOT NULL AUTO_INCREMENT,
column_1 varCHAr(255) NOT NULL,
column_2 TEXT,
column_3 blOB,
PRIMARY KEY (id),
KEY key_1 (column_1($this->max_index_length)),
KEY compound_key (id,column_1($this->max_index_length)),
FULLTEXT KEY fulltext_key (column_1)
) {$this->db_engine}
",
false
);

$this->assertEmpty( $updates );
}
}
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