public function DatabaseSchema_mysql::dropPrimaryKey

Drop the primary key.

Parameters

string $table: The table to be altered.

Return value

bool: TRUE if the primary key was successfully dropped, FALSE if there was no primary key on this table to begin with.

Overrides DatabaseSchema::dropPrimaryKey

File

core/includes/database/mysql/schema.inc, line 465

Database schema code for MySQL database servers.

Class

DatabaseSchema_mysql

Class to create and manipulate MySQL tables.

Code

public function dropPrimaryKey($table) {
  if (!$this->indexExists($table, 'PRIMARY')) {
    return FALSE;
  }

  $this->connection->query('ALTER TABLE {' . $table . '} DROP PRIMARY KEY');
  return TRUE;
}