function db_drop_primary_key

1.20.x database.inc db_drop_primary_key($table)

Drops the primary key of a database table.

Parameters

$table: Name of the table to be altered.

Related topics

Schema API API to handle database schemas.

3 calls to db_drop_primary_key()

language_update_1000 in modules/language/language.install: Rename {language}.language to {language}.langcode.
node_update_1014 in modules/node/node.install: Change {history}.nid to an unsigned int in order to match {node}.nid.
user_update_1007 in modules/user/user.install: Convert user roles to configuration files.

File

includes/database/database.inc, line 3162: Core systems for the database layer.

Code

function db_drop_primary_key($table) {
  return Database::getConnection()->schema()->dropPrimaryKey($table);
}