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CREATE TABLE t ( a INT, b INT, c INT GENERATED ALWAYS AS(a+b), d INT GENERATED ALWAYS AS(a+b+b), KEY idxa (a), KEY vidxcd (c, d) ) ENGINE=INNODB; INSERT INTO t (a,b) VALUES (1, 2); SELECT index_name, stat_name, stat_description FROM mysql.innodb_index_stats WHERE database_name = 'test' AND table_name = 't'; index_name stat_name stat_description GEN_CLUST_INDEX n_diff_pfx01 DB_ROW_ID GEN_CLUST_INDEX n_leaf_pages Number of leaf pages in the index GEN_CLUST_INDEX size Number of pages in the index idxa n_diff_pfx01 a idxa n_diff_pfx02 a,DB_ROW_ID idxa n_leaf_pages Number of leaf pages in the index idxa size Number of pages in the index vidxcd n_diff_pfx01 c vidxcd n_diff_pfx02 c,d vidxcd n_diff_pfx03 c,d,DB_ROW_ID vidxcd n_leaf_pages Number of leaf pages in the index vidxcd size Number of pages in the index ALTER TABLE t ADD COLUMN e INT GENERATED ALWAYS AS(a+a+b), ADD INDEX idxb (b), ALGORITHM=INPLACE; SELECT index_name, stat_name, stat_description FROM mysql.innodb_index_stats WHERE database_name = 'test' AND table_name = 't'; index_name stat_name stat_description GEN_CLUST_INDEX n_diff_pfx01 DB_ROW_ID GEN_CLUST_INDEX n_leaf_pages Number of leaf pages in the index GEN_CLUST_INDEX size Number of pages in the index idxa n_diff_pfx01 a idxa n_diff_pfx02 a,DB_ROW_ID idxa n_leaf_pages Number of leaf pages in the index idxa size Number of pages in the index idxb n_diff_pfx01 b idxb n_diff_pfx02 b,DB_ROW_ID idxb n_leaf_pages Number of leaf pages in the index idxb size Number of pages in the index vidxcd n_diff_pfx01 c vidxcd n_diff_pfx02 c,d vidxcd n_diff_pfx03 c,d,DB_ROW_ID vidxcd n_leaf_pages Number of leaf pages in the index vidxcd size Number of pages in the index ALTER TABLE t DROP COLUMN c, DROP INDEX idxa, ALGORITHM=INPLACE; SELECT index_name, stat_name, stat_description FROM mysql.innodb_index_stats WHERE database_name = 'test' AND table_name = 't'; index_name stat_name stat_description GEN_CLUST_INDEX n_diff_pfx01 DB_ROW_ID GEN_CLUST_INDEX n_leaf_pages Number of leaf pages in the index GEN_CLUST_INDEX size Number of pages in the index idxb n_diff_pfx01 b idxb n_diff_pfx02 b,DB_ROW_ID idxb n_leaf_pages Number of leaf pages in the index idxb size Number of pages in the index vidxcd n_diff_pfx01 d vidxcd n_diff_pfx02 d,DB_ROW_ID vidxcd n_leaf_pages Number of leaf pages in the index vidxcd size Number of pages in the index ALTER TABLE t ADD INDEX vidxe (e), ALGORITHM=INPLACE; SELECT index_name, stat_name, stat_description FROM mysql.innodb_index_stats WHERE database_name = 'test' AND table_name = 't'; index_name stat_name stat_description GEN_CLUST_INDEX n_diff_pfx01 DB_ROW_ID GEN_CLUST_INDEX n_leaf_pages Number of leaf pages in the index GEN_CLUST_INDEX size Number of pages in the index idxb n_diff_pfx01 b idxb n_diff_pfx02 b,DB_ROW_ID idxb n_leaf_pages Number of leaf pages in the index idxb size Number of pages in the index vidxcd n_diff_pfx01 d vidxcd n_diff_pfx02 d,DB_ROW_ID vidxcd n_leaf_pages Number of leaf pages in the index vidxcd size Number of pages in the index vidxe n_diff_pfx01 e vidxe n_diff_pfx02 e,DB_ROW_ID vidxe n_leaf_pages Number of leaf pages in the index vidxe size Number of pages in the index ALTER TABLE t ADD COLUMN f INT GENERATED ALWAYS AS(a + a), ADD INDEX vidxf (f), ALGORITHM=INPLACE; SELECT index_name, stat_name, stat_description FROM mysql.innodb_index_stats WHERE database_name = 'test' AND table_name = 't'; index_name stat_name stat_description GEN_CLUST_INDEX n_diff_pfx01 DB_ROW_ID GEN_CLUST_INDEX n_leaf_pages Number of leaf pages in the index GEN_CLUST_INDEX size Number of pages in the index idxb n_diff_pfx01 b idxb n_diff_pfx02 b,DB_ROW_ID idxb n_leaf_pages Number of leaf pages in the index idxb size Number of pages in the index vidxcd n_diff_pfx01 d vidxcd n_diff_pfx02 d,DB_ROW_ID vidxcd n_leaf_pages Number of leaf pages in the index vidxcd size Number of pages in the index vidxe n_diff_pfx01 e vidxe n_diff_pfx02 e,DB_ROW_ID vidxe n_leaf_pages Number of leaf pages in the index vidxe size Number of pages in the index vidxf n_diff_pfx01 f vidxf n_diff_pfx02 f,DB_ROW_ID vidxf n_leaf_pages Number of leaf pages in the index vidxf size Number of pages in the index ALTER TABLE t DROP INDEX vidxcd; SELECT index_name, stat_name, stat_description FROM mysql.innodb_index_stats WHERE database_name = 'test' AND table_name = 't'; index_name stat_name stat_description GEN_CLUST_INDEX n_diff_pfx01 DB_ROW_ID GEN_CLUST_INDEX n_leaf_pages Number of leaf pages in the index GEN_CLUST_INDEX size Number of pages in the index idxb n_diff_pfx01 b idxb n_diff_pfx02 b,DB_ROW_ID idxb n_leaf_pages Number of leaf pages in the index idxb size Number of pages in the index vidxe n_diff_pfx01 e vidxe n_diff_pfx02 e,DB_ROW_ID vidxe n_leaf_pages Number of leaf pages in the index vidxe size Number of pages in the index vidxf n_diff_pfx01 f vidxf n_diff_pfx02 f,DB_ROW_ID vidxf n_leaf_pages Number of leaf pages in the index vidxf size Number of pages in the index DROP TABLE t;