EVOLUTION-MANAGER

Edit File: 3083.result

SET DEFAULT_STORAGE_ENGINE = 'tokudb'; DROP TABLE IF EXISTS foo; set session tokudb_prelock_empty=0; create table foo (a int, b int, c int, primary key (a), key (b) clustering=yes); insert into foo values (1,1,1),(2,2,2),(3,3,3),(4,4,4),(5,5,5); # Both explains should use primary key; explain select * from foo; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE foo index NULL b 5 NULL 5 Using index explain select a from foo; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE foo index NULL PRIMARY 4 NULL 5 Using index DROP table foo; create table foo (a int, b int, c int, key (b) clustering=yes, primary key (a)); insert into foo values (1,1,1),(2,2,2),(3,3,3),(4,4,4),(5,5,5); # Both explains should use primary key; explain select * from foo; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE foo index NULL b 5 NULL 5 Using index explain select a from foo; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE foo index NULL PRIMARY 4 NULL 5 Using index DROP TABLE foo;