my primary key is anti pattern? replace `db name`

.sql

SELECT DISTINCT
	t.table_name,
	column_name,
	column_type,
	table_rows,
	(stat_value * @@innodb_page_size) / 1024 / 1024 AS index_size_mb
FROM
	information_schema.tables t
LEFT JOIN information_schema.columns c
	ON c.table_name = t.table_name
	AND c.column_key = 'PRI'
	AND c.data_type != 'int'
LEFT JOIN mysql.innodb_index_stats iis
	ON iis.table_name = t.table_name
	AND iis.index_name = 'PRIMARY'
	AND iis.stat_name = 'size'
WHERE iis.database_name = 'db name'
	AND t.table_schema = 'db name'
ORDER BY index_size_mb DESC;