public function DatabaseSchema_sqlite::dropPrimaryKey in Drupal 7

Drop the primary key.

Parameters

$table: The table to be altered.

Return value

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

includes/database/sqlite/schema.inc, line 634

Database schema code for SQLite databases.

Class

DatabaseSchema_sqlite

Code

public function dropPrimaryKey($table) {
  $old_schema = $this
    ->introspectSchema($table);
  $new_schema = $old_schema;
  if (empty($new_schema['primary key'])) {
    return FALSE;
  }
  unset($new_schema['primary key']);
  $this
    ->alterTable($table, $old_schema, $new_schema);
  return TRUE;
}