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Better names for two system variables:

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- heuristic => optimizer_prune_level
- plan_search_depth => optimizer_search_depth
This commit is contained in:
unknown 2004-05-20 17:47:43 +03:00
commit bed3bc480a
6 changed files with 94 additions and 91 deletions
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62
mysql-test/r/greedy_optimizer.result
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@ -108,15 +108,15 @@ insert into t7 values (18,2,3,4,5,6);
insert into t7 values (19,2,3,4,5,6);
insert into t7 values (20,2,3,4,5,6);
insert into t7 values (21,2,3,4,5,6);
select @@plan_search_depth;
@@plan_search_depth
select @@optimizer_search_depth;
@@optimizer_search_depth
62
select @@heuristic;
@@heuristic
select @@optimizer_prune_level;
@@optimizer_prune_level
1
set plan_search_depth=63;
select @@plan_search_depth;
@@plan_search_depth
set optimizer_search_depth=63;
select @@optimizer_search_depth;
@@optimizer_search_depth
63
explain select t1.c11 from t1, t2, t3, t4, t5, t6, t7 where t1.c12 = t2.c21 and t2.c22 = t3.c31 and t3.c32 = t4.c41 and t4.c42 = t5.c51 and t5.c52 = t6.c61 and t6.c62 = t7.c71;
id select_type table type possible_keys key key_len ref rows Extra
@ -190,13 +190,13 @@ id select_type table type possible_keys key key_len ref rows Extra
show status like 'Last_query_cost';
Variable_name Value
Last_query_cost 794.838037
set heuristic=0;
select @@heuristic;
@@heuristic
set optimizer_prune_level=0;
select @@optimizer_prune_level;
@@optimizer_prune_level
0
set plan_search_depth=0;
select @@plan_search_depth;
@@plan_search_depth
set optimizer_search_depth=0;
select @@optimizer_search_depth;
@@optimizer_search_depth
0
explain select t1.c11 from t1, t2, t3, t4, t5, t6, t7 where t1.c12 = t2.c21 and t2.c22 = t3.c31 and t3.c32 = t4.c41 and t4.c42 = t5.c51 and t5.c52 = t6.c61 and t6.c62 = t7.c71;
id select_type table type possible_keys key key_len ref rows Extra
@ -270,9 +270,9 @@ id select_type table type possible_keys key key_len ref rows Extra
show status like 'Last_query_cost';
Variable_name Value
Last_query_cost 274.419727
set plan_search_depth=1;
select @@plan_search_depth;
@@plan_search_depth
set optimizer_search_depth=1;
select @@optimizer_search_depth;
@@optimizer_search_depth
1
explain select t1.c11 from t1, t2, t3, t4, t5, t6, t7 where t1.c12 = t2.c21 and t2.c22 = t3.c31 and t3.c32 = t4.c41 and t4.c42 = t5.c51 and t5.c52 = t6.c61 and t6.c62 = t7.c71;
id select_type table type possible_keys key key_len ref rows Extra
@ -346,9 +346,9 @@ id select_type table type possible_keys key key_len ref rows Extra
show status like 'Last_query_cost';
Variable_name Value
Last_query_cost 794.838037
set plan_search_depth=62;
select @@plan_search_depth;
@@plan_search_depth
set optimizer_search_depth=62;
select @@optimizer_search_depth;
@@optimizer_search_depth
62
explain select t1.c11 from t1, t2, t3, t4, t5, t6, t7 where t1.c12 = t2.c21 and t2.c22 = t3.c31 and t3.c32 = t4.c41 and t4.c42 = t5.c51 and t5.c52 = t6.c61 and t6.c62 = t7.c71;
id select_type table type possible_keys key key_len ref rows Extra
@ -422,13 +422,13 @@ id select_type table type possible_keys key key_len ref rows Extra
show status like 'Last_query_cost';
Variable_name Value
Last_query_cost 274.419727
set heuristic=1;
select @@heuristic;
@@heuristic
set optimizer_prune_level=1;
select @@optimizer_prune_level;
@@optimizer_prune_level
1
set plan_search_depth=0;
select @@plan_search_depth;
@@plan_search_depth
set optimizer_search_depth=0;
select @@optimizer_search_depth;
@@optimizer_search_depth
0
explain select t1.c11 from t1, t2, t3, t4, t5, t6, t7 where t1.c12 = t2.c21 and t2.c22 = t3.c31 and t3.c32 = t4.c41 and t4.c42 = t5.c51 and t5.c52 = t6.c61 and t6.c62 = t7.c71;
id select_type table type possible_keys key key_len ref rows Extra
@ -502,9 +502,9 @@ id select_type table type possible_keys key key_len ref rows Extra
show status like 'Last_query_cost';
Variable_name Value
Last_query_cost 794.838037
set plan_search_depth=1;
select @@plan_search_depth;
@@plan_search_depth
set optimizer_search_depth=1;
select @@optimizer_search_depth;
@@optimizer_search_depth
1
explain select t1.c11 from t1, t2, t3, t4, t5, t6, t7 where t1.c12 = t2.c21 and t2.c22 = t3.c31 and t3.c32 = t4.c41 and t4.c42 = t5.c51 and t5.c52 = t6.c61 and t6.c62 = t7.c71;
id select_type table type possible_keys key key_len ref rows Extra
@ -578,9 +578,9 @@ id select_type table type possible_keys key key_len ref rows Extra
show status like 'Last_query_cost';
Variable_name Value
Last_query_cost 794.838037
set plan_search_depth=62;
select @@plan_search_depth;
@@plan_search_depth
set optimizer_search_depth=62;
select @@optimizer_search_depth;
@@optimizer_search_depth
62
explain select t1.c11 from t1, t2, t3, t4, t5, t6, t7 where t1.c12 = t2.c21 and t2.c22 = t3.c31 and t3.c32 = t4.c41 and t4.c42 = t5.c51 and t5.c52 = t6.c61 and t6.c62 = t7.c71;
id select_type table type possible_keys key key_len ref rows Extra