public function DatabaseSchema_sqlite::addPrimaryKey in Drupal 7
Add a primary key.
Parameters
$table: The table to be altered.
$fields: Fields for the primary key.
Throws
DatabaseSchemaObjectDoesNotExistException If the specified table doesn't exist.
DatabaseSchemaObjectExistsException If the specified table already has a primary key.
Overrides DatabaseSchema::addPrimaryKey
File
- includes/
database/ sqlite/ schema.inc, line 618 - Database schema code for SQLite databases.
Class
Code
public function addPrimaryKey($table, $fields) {
if (!$this
->tableExists($table)) {
throw new DatabaseSchemaObjectDoesNotExistException(t("Cannot add primary key to table @table: table doesn't exist.", array(
'@table' => $table,
)));
}
$old_schema = $this
->introspectSchema($table);
$new_schema = $old_schema;
if (!empty($new_schema['primary key'])) {
throw new DatabaseSchemaObjectExistsException(t("Cannot add primary key to table @table: primary key already exists.", array(
'@table' => $table,
)));
}
$new_schema['primary key'] = $fields;
$this
->alterTable($table, $old_schema, $new_schema);
}