public function Schema::dropPrimaryKey in Drupal 8

Same name in this branch

1. 8 core/lib/Drupal/Core/Database/Schema.php \Drupal\Core\Database\Schema::dropPrimaryKey()
2. 8 core/lib/Drupal/Core/Database/Driver/sqlite/Schema.php \Drupal\Core\Database\Driver\sqlite\Schema::dropPrimaryKey()
3. 8 core/lib/Drupal/Core/Database/Driver/pgsql/Schema.php \Drupal\Core\Database\Driver\pgsql\Schema::dropPrimaryKey()
4. 8 core/lib/Drupal/Core/Database/Driver/mysql/Schema.php \Drupal\Core\Database\Driver\mysql\Schema::dropPrimaryKey()

Same name and namespace in other branches

1. 9 core/lib/Drupal/Core/Database/Driver/sqlite/Schema.php \Drupal\Core\Database\Driver\sqlite\Schema::dropPrimaryKey()

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 Schema::dropPrimaryKey

File

core/lib/Drupal/Core/Database/Driver/sqlite/Schema.php, line 754

Class

Schema

SQLite implementation of \Drupal\Core\Database\Schema.

Namespace

Drupal\Core\Database\Driver\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;
}