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/mysql/Schema.php \Drupal\Core\Database\Driver\mysql\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

1 call to Schema::dropPrimaryKey()

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

Drop a field.

File

core/lib/Drupal/Core/Database/Driver/mysql/Schema.php, line 540

Class

Schema

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

Namespace

Drupal\Core\Database\Driver\mysql

Code

public function dropPrimaryKey($table) {
  if (!$this
    ->indexExists($table, 'PRIMARY')) {
    return FALSE;
  }
  $this->connection
    ->query('ALTER TABLE {' . $table . '} DROP PRIMARY KEY');
  return TRUE;
}