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Cleanup of old tables


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I made a script to list up any tables I have in the database that is not listed in any of the installed applications schema.json-files. 

There are some tables I found that in an earlier upgrade have code to drop the table, but I've also found some tables referred to in old upgrade files, but doesn't seem to be in use by any code. 

These are some of them: 

  • core_archive_log
  • core_archive_restore
  • core_hooks_files
  • core_inline_messages
  • core_like_cache
  • core_login_handlers
  • core_rss_imported
  • core_sys_login
  • core_sys_settings_titles

Any particular reason these are still part of upgrade scripts for IPS 4 (where the tables are created), but they have never actually been removed in any version after this, even though they are not in use by any code? At least it doesn't seem like it. 

Some of these tables that are actually in use?


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15 minutes ago, bfarber said:

Thanks, I'll take a look at cleaning up those tables in a future update.

Sounds good. 

Here is the script I made. If you would like to run it on some installations you have access to and see if you find something else. 

require_once(__DIR__ . '/../www/init.php');
$apps = \IPS\Application::applications();
$installedAppTables = [];
foreach ($apps as $app)
    foreach( json_decode( file_get_contents( \IPS\ROOT_PATH . "/applications/{$app->directory}/data/schema.json" ), TRUE ) as $tableName => $tableDefinition )
        $installedAppTables[] = \IPS\Db::i()->prefix . $tableName;
if (\IPS\Db::i()->checkForTable('cms_databases')) {
    // ibf_cms_custom_database_1
    $customDatabases = \IPS\Db::i()->select('database_id', 'cms_databases');
    foreach ($customDatabases as $databaseId) {
        $installedAppTables[] = \IPS\Db::i()->prefix . "cms_custom_database_{$databaseId}";
$inDatabaseTables = \IPS\Db::i()->getTables('');
$tablesForManualReview = array_diff($inDatabaseTables, $installedAppTables);
echo "Tables for review (may be unused/deprecated tables):\n";
echo implode("\n", $tablesForManualReview);
echo "\n\nPlease note: Tables may still be in use. Some of the tables may belong to plugins or applications you no longer have installed.\n";

(You will most likely need to change the require path)

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