function db_drop_primary_key

7.x database.inc db_drop_primary_key($table)
6.x database.pgsql.inc db_drop_primary_key(&$ret, $table)
6.x database.mysql-common.inc db_drop_primary_key(&$ret, $table)

Drop the primary key.

Parameters

$ret: Array to which query results will be added.

$table: The table to be altered.

Related topics

5 calls to db_drop_primary_key()
system_update_6001 in drupal-6.x/modules/system/system.install
Add version id column to {term_node} to allow taxonomy module to use revisions.
system_update_6002 in drupal-6.x/modules/system/system.install
Increase the maximum length of variable names from 48 to 128.
system_update_6019 in drupal-6.x/modules/system/system.install
Reconcile small differences in the previous, manually created mysql and pgsql schemas so they are the same and can be represented by a single schema structure.
system_update_6022 in drupal-6.x/modules/system/system.install
Update files tables to associate files to a uid by default instead of a nid. Rename file_revisions to upload since it should only be used by the upload module used by upload to link files to nodes.
system_update_6043 in drupal-6.x/modules/system/system.install
Update table indices to make them more rational and useful.

File

drupal-6.x/includes/database.mysql-common.inc, line 394
Functions shared between mysql and mysqli database engines.

Code

function db_drop_primary_key(&$ret, $table) {
  $ret[] = update_sql('ALTER TABLE {' . $table . '} DROP PRIMARY KEY');
}