protected function Schema::findPrimaryKeyColumns in Drupal 9

Same name in this branch

1. 9 core/lib/Drupal/Core/Database/Schema.php \Drupal\Core\Database\Schema::findPrimaryKeyColumns()
2. 9 core/lib/Drupal/Core/Database/Driver/sqlite/Schema.php \Drupal\Core\Database\Driver\sqlite\Schema::findPrimaryKeyColumns()
3. 9 core/lib/Drupal/Core/Database/Driver/pgsql/Schema.php \Drupal\Core\Database\Driver\pgsql\Schema::findPrimaryKeyColumns()
4. 9 core/lib/Drupal/Core/Database/Driver/mysql/Schema.php \Drupal\Core\Database\Driver\mysql\Schema::findPrimaryKeyColumns()

Same name and namespace in other branches

1. 8 core/lib/Drupal/Core/Database/Schema.php \Drupal\Core\Database\Schema::findPrimaryKeyColumns()

Finds the primary key columns of a table, from the database.

Parameters

string $table: The name of the table.

Return value

string[]|false A simple array with the names of the columns composing the table's primary key, or FALSE if the table does not exist.

Throws

\RuntimeException If the driver does not override this method.

3 methods override Schema::findPrimaryKeyColumns()

Schema::findPrimaryKeyColumns in core/lib/Drupal/Core/Database/Driver/sqlite/Schema.php

Finds the primary key columns of a table, from the database.

Schema::findPrimaryKeyColumns in core/lib/Drupal/Core/Database/Driver/pgsql/Schema.php

Finds the primary key columns of a table, from the database.

Schema::findPrimaryKeyColumns in core/lib/Drupal/Core/Database/Driver/mysql/Schema.php

Finds the primary key columns of a table, from the database.

File

core/lib/Drupal/Core/Database/Schema.php, line 397

Class

Schema

Provides a base implementation for Database Schema.

Namespace

Drupal\Core\Database

Code

protected function findPrimaryKeyColumns($table) {
  if (!$this
    ->tableExists($table)) {
    return FALSE;
  }
  throw new \RuntimeException("The '" . $this->connection
    ->driver() . "' database driver does not implement " . __METHOD__);
}