From 1d135003738cee8369b3b4b5427ab46b9f249117 Mon Sep 17 00:00:00 2001 From: Sergey Petrunya Date: Thu, 29 Oct 2009 20:50:33 +0300 Subject: [PATCH] MWL#17: Table elimination - add debug tests (were accidentally not pushed with the bulk of WL) --- mysql-test/r/table_elim_debug.result | 22 ++++++++++++++++++++++ mysql-test/t/table_elim_debug.test | 27 +++++++++++++++++++++++++++ 2 files changed, 49 insertions(+) create mode 100644 mysql-test/r/table_elim_debug.result create mode 100644 mysql-test/t/table_elim_debug.test diff --git a/mysql-test/r/table_elim_debug.result b/mysql-test/r/table_elim_debug.result new file mode 100644 index 00000000000..b059baffa89 --- /dev/null +++ b/mysql-test/r/table_elim_debug.result @@ -0,0 +1,22 @@ +drop table if exists t1, t2; +create table t1 (a int); +insert into t1 values (0),(1),(2),(3); +create table t2 (a int primary key, b int) +as select a, a as b from t1 where a in (1,2); +explain select t1.a from t1 left join t2 on t2.a=t1.a; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 4 +set optimizer_switch='table_elimination=off'; +explain select t1.a from t1 left join t2 on t2.a=t1.a; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 4 +1 SIMPLE t2 eq_ref PRIMARY PRIMARY 4 test.t1.a 1 Using index +set optimizer_switch='table_elimination=on'; +explain select t1.a from t1 left join t2 on t2.a=t1.a; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 4 +set optimizer_switch='table_elimination=default'; +explain select t1.a from t1 left join t2 on t2.a=t1.a; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 4 +drop table t1, t2; diff --git a/mysql-test/t/table_elim_debug.test b/mysql-test/t/table_elim_debug.test new file mode 100644 index 00000000000..9f793169e4f --- /dev/null +++ b/mysql-test/t/table_elim_debug.test @@ -0,0 +1,27 @@ +# +# Table elimination (MWL#17) tests that need debug build +# +--source include/have_debug.inc + +--disable_warnings +drop table if exists t1, t2; +--enable_warnings + +# Check if optimizer_switch works + +create table t1 (a int); +insert into t1 values (0),(1),(2),(3); + +create table t2 (a int primary key, b int) + as select a, a as b from t1 where a in (1,2); + +explain select t1.a from t1 left join t2 on t2.a=t1.a; + +set optimizer_switch='table_elimination=off'; +explain select t1.a from t1 left join t2 on t2.a=t1.a; +set optimizer_switch='table_elimination=on'; +explain select t1.a from t1 left join t2 on t2.a=t1.a; +set optimizer_switch='table_elimination=default'; +explain select t1.a from t1 left join t2 on t2.a=t1.a; + +drop table t1, t2;