Merge 10.4 into 10.5

mysql-test/main/func_group.result

@@ -2460,7 +2460,38 @@ count(*)+sleep(0)
 2
 drop table t1;
 #
-# Start of 10.3 tests
+# MDEV-25112: MIN/MAX optimization for query containing BETWEEN in WHERE
+#
+create table t1 (a int) engine=myisam;
+insert into t1 values (267), (273),  (287), (303), (308);
+select max(a) from t1 where a < 303 and (a between 267 AND 287);
+max(a)
+287
+explain select max(a) from t1 where a < 303 and (a between 267 AND 287);
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	SIMPLE	t1	ALL	NULL	NULL	NULL	NULL	5	Using where
+select min(a) from t1 where a > 267 and (a between 273 AND 303);
+min(a)
+273
+explain select min(a) from t1 where a > 267 and (a between 273 AND 303);
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	SIMPLE	t1	ALL	NULL	NULL	NULL	NULL	5	Using where
+create index idx on t1(a);
+select max(a) from t1 where a < 303 and (a between 267 AND 287);
+max(a)
+287
+explain select max(a) from t1 where a < 303 and (a between 267 AND 287);
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	SIMPLE	NULL	NULL	NULL	NULL	NULL	NULL	NULL	Select tables optimized away
+select min(a) from t1 where a > 267 and (a between 273 AND 303);
+min(a)
+273
+explain select min(a) from t1 where a > 267 and (a between 273 AND 303);
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	SIMPLE	NULL	NULL	NULL	NULL	NULL	NULL	NULL	Select tables optimized away
+drop table t1;
+#
+# End of 10.2 tests
 #
 #
 # MDEV-9408 CREATE TABLE SELECT MAX(int_column) creates different columns for table vs view
@@ -2492,3 +2523,6 @@ t2	CREATE TABLE `t2` (
 DROP TABLE t2;
 DROP VIEW v1;
 DROP TABLE t1;
+#
+# End of 10.3 tests
+#

mysql-test/main/func_group.test

@@ -1705,7 +1705,33 @@ select count(*)+sleep(0) from t1;
 drop table t1;
 
 --echo #
---echo # Start of 10.3 tests
+--echo # MDEV-25112: MIN/MAX optimization for query containing BETWEEN in WHERE
+--echo #
+
+create table t1 (a int) engine=myisam;
+insert into t1 values (267), (273),  (287), (303), (308);
+
+let $q1=
+select max(a) from t1 where a < 303 and (a between 267 AND 287);
+let $q2=
+select min(a) from t1 where a > 267 and (a between 273 AND 303);
+
+eval $q1;
+eval explain $q1;
+eval $q2;
+eval explain $q2;
+
+create index idx on t1(a);
+
+eval $q1;
+eval explain $q1;
+eval $q2;
+eval explain $q2;
+
+drop table t1;
+
+--echo #
+--echo # End of 10.2 tests
 --echo #
 
 --echo #
@@ -1730,3 +1756,7 @@ DROP TABLE t2;
 
 DROP VIEW v1;
 DROP TABLE t1;
+
+--echo #
+--echo # End of 10.3 tests
+--echo #

mysql-test/suite/engines/funcs/r/rpl_sp,myisam,mix.rdiff

@@ -1,3 +1,5 @@
+--- /home/alice/git/10.3/mysql-test/suite/engines/funcs/r/rpl_sp,myisam,mix.result~	2021-03-19 17:27:12.935559866 +0100
++++ /home/alice/git/10.3/mysql-test/suite/engines/funcs/r/rpl_sp,myisam,mix.reject	2021-03-19 17:27:14.071534938 +0100
 @@ -126,12 +126,15 @@
  show warnings;
  Level	Code	Message

mysys/my_seek.c

@@ -86,7 +86,7 @@ my_off_t my_tell(File fd, myf MyFlags)
   DBUG_ENTER("my_tell");
   DBUG_PRINT("my",("fd: %d  MyFlags: %lu",fd, MyFlags));
   DBUG_ASSERT(fd >= 0);
-#if defined (HAVE_TELL) && !defined (_WIN32)
+#if defined (HAVE_TELL) && !defined (_WIN32) && !defined(_AIX)
   pos= tell(fd);
 #else
   pos= my_seek(fd, 0L, MY_SEEK_CUR,0);

sql/opt_sum.cc

@@ -842,7 +842,10 @@ static bool matching_cond(bool max_fl, TABLE_REF *ref, KEY *keyinfo,
     if (is_field_part)
     {
       if (between || eq_type)
+      {
         *range_fl&= ~(NO_MAX_RANGE | NO_MIN_RANGE);
+        *range_fl&= ~(max_fl ? NEAR_MAX : NEAR_MIN);
+      }
       else
       {
         *range_fl&= ~(max_fl ? NO_MAX_RANGE : NO_MIN_RANGE);