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DROP TABLE IF EXISTS t1;
create table t1 ( a int primary key, b varchar(10), c varchar(10), index (b) )
engine=ndb;
insert into t1 values (1,'one','one'), (2,'two','two'), (3,'three','three');
create index c on t1(c);
show indexes from t1;
Table Non_unique Key_name Seq_in_index Column_name Collation Cardinality Sub_part Packed Null Index_type Comment
t1 0 PRIMARY 1 a A 3 NULL NULL BTREE
t1 1 b 1 b A 3 NULL NULL YES BTREE
t1 1 c 1 c A 3 NULL NULL YES BTREE
select * from t1 where c = 'two';
a b c
2 two two
alter table t1 drop index c;
show indexes from t1;
Table Non_unique Key_name Seq_in_index Column_name Collation Cardinality Sub_part Packed Null Index_type Comment
t1 0 PRIMARY 1 a A 3 NULL NULL BTREE
t1 1 b 1 b A 3 NULL NULL YES BTREE
select * from t1 where c = 'two';
a b c
2 two two
drop table t1;
create table t3 (a int primary key) engine=ndbcluster;
begin;
insert into t3 values (1);
alter table t3 rename t4;
commit;
select * from t3;
ERROR 42S02: Table 'test.t3' doesn't exist
select * from t4;
a
1
drop table t4;
show tables;
Tables_in_test
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