--source include/have_innodb.inc
--source include/have_debug.inc

delimiter |;
create function get_index_id(tbl_id int, index_name char(100))
  returns int
begin
  declare res int;
  select index_id into res from information_schema.innodb_sys_indexes where
    name=index_name and table_id = tbl_id;
  return res;
end|

delimiter ;|

create table t (
  pk int primary key,
  a int,
  b int,
  c int,
  unique index a_key (a),
  key c_key (c)
) engine=innodb stats_persistent=1;

insert into t values (1, 1, 1, 1);

set @table_id = (select table_id from information_schema.innodb_sys_tables where name='test/t');

set @a_key_id = get_index_id(@table_id, 'a_key');
set @c_key_id = get_index_id(@table_id, 'c_key');
set @primary_id = get_index_id(@table_id, 'primary');

select distinct(index_name) from mysql.innodb_index_stats where table_name = 't';
alter table t
  drop index a_key,
  add unique index a_key_strikes_back (a);
select distinct(index_name) from mysql.innodb_index_stats where table_name = 't';

check table t;
select @a_key_id = get_index_id(@table_id, 'a_key_strikes_back'),
  @c_key_id = get_index_id(@table_id, 'c_key'),
  @primary_id = get_index_id(@table_id, 'primary');

set @a_key_strikes_back_id = get_index_id(@table_id, 'a_key_strikes_back');
set @c_key_id = get_index_id(@table_id, 'c_key');
set @primary_id = get_index_id(@table_id, 'primary');

alter table t
  drop index a_key_strikes_back,
  add unique index a_key_returns (a),
  drop primary key,
  add primary key (pk),
  add unique index b_key (b);

check table t;
select @a_key_strikes_back_id = get_index_id(@table_id, 'a_key_returns'),
  @c_key_id = get_index_id(@table_id, 'c_key'),
  @primary_id = get_index_id(@table_id, 'primary');

set @a_key_returns_id = get_index_id(@table_id, 'a_key_returns');
set @b_key_id = get_index_id(@table_id, 'b_key');
set @c_key_id = get_index_id(@table_id, 'c_key');
set @primary_id = get_index_id(@table_id, 'primary');

alter table t
  drop key c_key,
  add key c_key2 (c);

check table t;
select @a_key_returns_id = get_index_id(@table_id, 'a_key_returns'),
  @b_key_id = get_index_id(@table_id, 'b_key'),
  @c_key_id = get_index_id(@table_id, 'c_key2'),
  @primary_id = get_index_id(@table_id, 'primary');

drop table t;
drop function get_index_id;

create table errors (
  a int,
  unique key a_key (a),
  b int
) engine=innodb;

--error ER_CANT_DROP_FIELD_OR_KEY
alter table errors
  drop key a_key,
  drop key a_key,
  add unique key a_key2 (a);

--error ER_CANT_DROP_FIELD_OR_KEY
alter table errors
  drop key a_key,
  drop key a_key2,
  add unique key a_key2 (a);

--error ER_CANT_DROP_FIELD_OR_KEY
alter table errors
  add key b_key (b),
  drop key b_key,
  add key bb_key (b);

--error ER_CANT_DROP_FIELD_OR_KEY
alter table errors
  drop key a_key,
  add key a_key2 (a),
  drop key a_key,
  add key a_key2 (a);

drop table errors;

--disable_query_log
call mtr.add_suppression("Flagged corruption of `a_key` in table `test`.`corrupted` in dict_set_index_corrupted");
--enable_query_log

create table corrupted (
  a int,
  key a_key (a)
) engine=innodb;

insert into corrupted values (1);

select * from corrupted;

SET @save_dbug = @@SESSION.debug_dbug;
SET debug_dbug = '+d,dict_set_index_corrupted';
check table corrupted;
SET debug_dbug = @save_dbug;

--error ER_INDEX_CORRUPT
select * from corrupted;

--error ER_INDEX_CORRUPT
alter table corrupted
  drop key a_key,
  add key a_key2 (a);

alter table corrupted
  drop key a_key;

select * from corrupted;

check table corrupted;

drop table corrupted;

create table t (
  a int,
  unique key a_key (a)
) engine=innodb stats_persistent=1;

SET @save_dbug = @@SESSION.debug_dbug;
SET debug_dbug = '+d,ib_rename_index_fail1';
-- error ER_LOCK_DEADLOCK
alter table t
  drop key a_key,
  add unique key a_key2 (a),
  algorithm=instant;
SET debug_dbug = @save_dbug;

--error ER_WRONG_NAME_FOR_INDEX
alter table t
  drop key a_key,
  add unique key `GEN_CLUST_INDEX` (a),
  algorithm=instant;

show create table t;

drop table t;


create table rename_column_and_index (
  a int,
  unique index a_key(a)
) engine=innodb;

insert into rename_column_and_index values (1), (3);

alter table rename_column_and_index
  change a aa int,
  drop key a_key,
  add unique key aa_key(aa),
  algorithm=instant;

show create table rename_column_and_index;
check table rename_column_and_index;
drop table rename_column_and_index;