EVOLUTION-MANAGER

Edit File: card_add_drop.result

set default_storage_engine='tokudb'; drop table if exists tt; create table tt (a int, b int, c int, d int, key(a), key(b), key(c)); insert into tt values (0,0,0,0),(1,0,0,0),(2,0,1,0),(3,0,1,0); show indexes from tt; Table Non_unique Key_name Seq_in_index Column_name Collation Cardinality Sub_part Packed Null Index_type Comment Index_comment tt 1 a 1 a A 4 NULL NULL YES BTREE tt 1 b 1 b A 4 NULL NULL YES BTREE tt 1 c 1 c A 4 NULL NULL YES BTREE analyze table tt; Table Op Msg_type Msg_text test.tt analyze status OK show indexes from tt; Table Non_unique Key_name Seq_in_index Column_name Collation Cardinality Sub_part Packed Null Index_type Comment Index_comment tt 1 a 1 a A 4 NULL NULL YES BTREE tt 1 b 1 b A 2 NULL NULL YES BTREE tt 1 c 1 c A 4 NULL NULL YES BTREE alter table tt drop key b, add key (d); show indexes from tt; Table Non_unique Key_name Seq_in_index Column_name Collation Cardinality Sub_part Packed Null Index_type Comment Index_comment tt 1 a 1 a A 4 NULL NULL YES BTREE tt 1 c 1 c A 4 NULL NULL YES BTREE tt 1 d 1 d A 4 NULL NULL YES BTREE analyze table tt; Table Op Msg_type Msg_text test.tt analyze status OK show indexes from tt; Table Non_unique Key_name Seq_in_index Column_name Collation Cardinality Sub_part Packed Null Index_type Comment Index_comment tt 1 a 1 a A 4 NULL NULL YES BTREE tt 1 c 1 c A 4 NULL NULL YES BTREE tt 1 d 1 d A 2 NULL NULL YES BTREE flush tables; show indexes from tt; Table Non_unique Key_name Seq_in_index Column_name Collation Cardinality Sub_part Packed Null Index_type Comment Index_comment tt 1 a 1 a A 4 NULL NULL YES BTREE tt 1 c 1 c A 4 NULL NULL YES BTREE tt 1 d 1 d A 2 NULL NULL YES BTREE drop table tt;