function db_drop_field

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

Drop a field.

Parameters

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

$table: The table to be altered.

$field: The field to be dropped.

Related topics

Schema API
A Drupal schema definition is an array structure representing one or more tables and their related keys and indexes. A schema is defined by hook_schema(), which usually lives in a modulename.install file.
4 calls to db_drop_field()
db_change_field in drupal-6.x/includes/database.pgsql.inc
Change a field definition.
locale_update_6001 in drupal-6.x/modules/locale/locale.install
Change locale column to language. The language column is added by update_fix_d6_requirements() in update.php to avoid a large number of error messages from update.php. All we need to do here is copy locale to language and then drop locale.
system_update_6008 in drupal-6.x/modules/system/system.install
Add info files to themes. The info and owner columns are added by update_fix_d6_requirements() in update.php to avoid a large number of error messages from update.php. All we need to do here is copy description to owner and then drop description.
system_update_6036 in drupal-6.x/modules/system/system.install
Change the search schema and indexing.

File

drupal-6.x/includes/database.mysql-common.inc, line 330
Functions shared between mysql and mysqli database engines.

Code

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