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;
}

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