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FIX Clear table logic for MySQL 8

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This commit is contained in:
Steve Boyd 2024-08-06 15:20:43 +12:00
parent 1ac3428466
commit c3f0104a89
1 changed files with 21 additions and 1 deletions
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22
src/ORM/Connect/MySQLDatabase.php
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@ -566,6 +566,26 @@ class MySQLDatabase extends Database implements TransactionManager
*/
public function clearTable($table)
{
$this->query("TRUNCATE TABLE \"$table\"");
// Not simply using "TRUNCATE TABLE \"$table\"" because DELETE is a lot quicker
// than TRUNCATE which is very relevant during unit testing. Using TRUNCATE will lead to an
// approximately 50% increase it the total time of running unit tests.
//
// Using max(ID) to determine if the table should reset its auto-increment, rather than using
// SELECT "AUTO_INCREMENT" FROM INFORMATION_SCHEMA.TABLES WHERE TABLE_SCHEMA = ? AND TABLE_NAME = ?
// after deleting from the table, because in MySQL 8, under certain conditions, notably
// when running behat, sometimes the auto-increment was being reset to 2 for unknown reasons
$self = $this;
$fn = function () use ($self, $table) {
$maxID = $self->query("SELECT MAX(ID) FROM \"$table\"")->value();
$self->query("DELETE FROM \"$table\"");
if ($maxID > 0) {
$self->query("ALTER TABLE \"$table\" AUTO_INCREMENT = 1");
}
};
if ($this->supportsTransactions()) {
$this->withTransaction($fn);
} else {
$fn();
}
}
}