Merge mysql.com:/home/psergey/tmp_merge3

into  mysql.com:/home/psergey/mysql-5.1-merge2


mysql-test/r/select.result:
  Auto merged
mysql-test/r/subselect.result:
  Auto merged
sql/sql_select.cc:
  Auto merged
sql/table.h:
  Auto merged
sql/opt_range.cc:
  Manual merge

mysql-test/r/select.result

@@ -3411,3 +3411,19 @@ SELECT * FROM t1;
 i
 255
 DROP TABLE t1;
+create table t1 (a int);
+insert into t1 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9);
+create table t2 (a int, b int, c int, e int, primary key(a,b,c));
+insert into t2 select A.a, B.a, C.a, C.a from t1 A, t1 B, t1 C;
+analyze table t2;
+Table	Op	Msg_type	Msg_text
+test.t2	analyze	status	OK
+select 'In next EXPLAIN, B.rows must be exactly 10:' Z;
+Z
+In next EXPLAIN, B.rows must be exactly 10:
+explain select * from t2 A, t2 B where A.a=5 and A.b=5 and A.C<5
+and B.a=5 and B.b=A.e and (B.b =1 or B.b = 3 or B.b=5);
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	SIMPLE	A	range	PRIMARY	PRIMARY	12	NULL	3	Using where
+1	SIMPLE	B	ref	PRIMARY	PRIMARY	8	const,test.A.e	10	
+drop table t1, t2;

mysql-test/r/subselect.result

@@ -1480,7 +1480,7 @@ Note	1003	select `test`.`t1`.`s1` AS `s1`,not(<in_optimizer>(`test`.`t1`.`s1`,<e
 explain extended select s1, s1 NOT IN (SELECT s1 FROM t2 WHERE s1 < 'a2') from t1;
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
 1	PRIMARY	t1	index	NULL	s1	6	NULL	3	Using index
-2	DEPENDENT SUBQUERY	t2	index_subquery	s1	s1	6	func	1	Using index; Using where
+2	DEPENDENT SUBQUERY	t2	index_subquery	s1	s1	6	func	2	Using index; Using where
 Warnings:
 Note	1003	select `test`.`t1`.`s1` AS `s1`,not(<in_optimizer>(`test`.`t1`.`s1`,<exists>(<index_lookup>(<cache>(`test`.`t1`.`s1`) in t2 on s1 checking NULL where (`test`.`t2`.`s1` < _latin1'a2'))))) AS `s1 NOT IN (SELECT s1 FROM t2 WHERE s1 < 'a2')` from `test`.`t1`
 drop table t1,t2;

mysql-test/t/select.test

@@ -2886,3 +2886,16 @@ SELECT * FROM t1;
 UPDATE t1 SET i = i - 1;
 SELECT * FROM t1;
 DROP TABLE t1;
+
+# BUG#17379
+
+create table t1 (a int);
+insert into t1 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9);
+create table t2 (a int, b int, c int, e int, primary key(a,b,c));
+insert into t2 select A.a, B.a, C.a, C.a from t1 A, t1 B, t1 C;
+analyze table t2;
+select 'In next EXPLAIN, B.rows must be exactly 10:' Z;
+
+explain select * from t2 A, t2 B where A.a=5 and A.b=5 and A.C<5
+          and B.a=5 and B.b=A.e and (B.b =1 or B.b = 3 or B.b=5);
+drop table t1, t2;

sql/opt_range.cc

@@ -450,6 +450,8 @@ public:
 
   /* TRUE if last checked tree->key can be used for ROR-scan */
   bool is_ror_scan;
+  /* Number of ranges in the last checked tree->key */
+  uint n_ranges;
 };
 
 class TABLE_READ_PLAN;
@@ -6582,6 +6584,7 @@ check_quick_select(PARAM *param,uint idx,SEL_ARG *tree)
                param->table->file->primary_key_is_clustered());
     param->is_ror_scan= !cpk_scan;
   }
+  param->n_ranges= 0;
 
   records=check_quick_keys(param,idx,tree,param->min_key,0,param->max_key,0);
   if (records != HA_POS_ERROR)
@@ -6589,7 +6592,7 @@ check_quick_select(PARAM *param,uint idx,SEL_ARG *tree)
     param->table->quick_keys.set_bit(key);
     param->table->quick_rows[key]=records;
     param->table->quick_key_parts[key]=param->max_key_part+1;
-
+    param->table->quick_n_ranges[key]= param->n_ranges;
     if (cpk_scan)
       param->is_ror_scan= TRUE;
   }
@@ -6725,7 +6728,10 @@ check_quick_keys(PARAM *param,uint idx,SEL_ARG *key_tree,
       HA_NOSAME &&
       min_key_length == max_key_length &&
       !memcmp(param->min_key,param->max_key,min_key_length))
+  {
     tmp=1;					// Max one record
+    param->n_ranges++;
+  }
   else
   {
     if (param->is_ror_scan)
@@ -6745,6 +6751,7 @@ check_quick_keys(PARAM *param,uint idx,SEL_ARG *key_tree,
             is_key_scan_ror(param, keynr, key_tree->part + 1)))
         param->is_ror_scan= FALSE;
     }
+    param->n_ranges++;
 
     if (tmp_min_flag & GEOM_FLAG)
     {

sql/table.h

@@ -264,6 +264,7 @@ struct st_table {
   ha_rows	quick_rows[MAX_KEY];
   key_part_map  const_key_parts[MAX_KEY];
   uint		quick_key_parts[MAX_KEY];
+  uint		quick_n_ranges[MAX_KEY];
 
   /*
     If this table has TIMESTAMP field with auto-set property (pointed by