public function DatabaseSchema_mysql::indexExists in Drupal 7

Checks if an index exists in the given table.

Parameters

$table: The name of the table in drupal (no prefixing).

$name: The name of the index in drupal (no prefixing).

Return value

TRUE if the given index exists, otherwise FALSE.

Overrides DatabaseSchema::indexExists

6 calls to DatabaseSchema_mysql::indexExists()

DatabaseSchema_mysql::addIndex in includes/database/mysql/schema.inc

Add an index.

DatabaseSchema_mysql::addPrimaryKey in includes/database/mysql/schema.inc

Add a primary key.

DatabaseSchema_mysql::addUniqueKey in includes/database/mysql/schema.inc

Add a unique key.

DatabaseSchema_mysql::dropIndex in includes/database/mysql/schema.inc

Drop an index.

DatabaseSchema_mysql::dropPrimaryKey in includes/database/mysql/schema.inc

Drop the primary key.

... See full list

File

includes/database/mysql/schema.inc, line 398

Database schema code for MySQL database servers.

Class

DatabaseSchema_mysql

Code

public function indexExists($table, $name) {

  // Returns one row for each column in the index. Result is string or FALSE.
  // Details at http://dev.mysql.com/doc/refman/5.0/en/show-index.html
  $row = $this->connection
    ->query('SHOW INDEX FROM {' . $table . "} WHERE key_name = '{$name}'")
    ->fetchAssoc();
  return isset($row['Key_name']);
}