Merge mysql.com:/home/hf/work/29717/my50-29717

into  mysql.com:/home/hf/work/29717/my51-29717


mysql-test/r/group_by.result:
  Auto merged
mysql-test/r/insert_select.result:
  Auto merged
mysql-test/t/group_by.test:
  Auto merged
mysql-test/t/insert_select.test:
  Auto merged
sql/sql_select.cc:
  Auto merged
sql/sql_select.h:
  Auto merged

4 files changed, 93 insertions, 0 deletions

diff --git a/mysql-test/r/group_by.result b/mysql-test/r/group_by.result
index ebe59331357..faa1bc1d661 100644
--- a/mysql-test/r/group_by.result
+++ b/mysql-test/r/group_by.result
@@ -824,6 +824,23 @@ a
 2
 1
 DROP TABLE t1;
+CREATE TABLE t1 (
+f1 int(10) unsigned NOT NULL auto_increment primary key,
+f2 varchar(100) NOT NULL default ''
+);
+CREATE TABLE t2 (
+f1 varchar(10) NOT NULL default '',
+f2 char(3) NOT NULL default '',
+PRIMARY KEY  (`f1`),
+KEY `k1` (`f2`,`f1`)
+);
+INSERT INTO t1 values(NULL, '');
+INSERT INTO `t2` VALUES ('486878','WDT'),('486910','WDT');
+SELECT SQL_BUFFER_RESULT avg(t2.f1) FROM t1, t2 where t2.f2 = 'SIR' GROUP BY t1.f1;
+avg(t2.f1)
+SELECT avg(t2.f1) FROM t1, t2 where t2.f2 = 'SIR' GROUP BY t1.f1;
+avg(t2.f1)
+DROP TABLE t1, t2;
 create table t1 (c1 char(3), c2 char(3));
 create table t2 (c3 char(3), c4 char(3));
 insert into t1 values ('aaa', 'bb1'), ('aaa', 'bb2');
diff --git a/mysql-test/r/insert_select.result b/mysql-test/r/insert_select.result
index bea8706a5be..2604e4bf648 100644
--- a/mysql-test/r/insert_select.result
+++ b/mysql-test/r/insert_select.result
@@ -699,6 +699,32 @@ Handler_read_prev	0
 Handler_read_rnd	0
 Handler_read_rnd_next	1
 DROP TABLE t1;
+CREATE TABLE t1 (
+f1 int(10) unsigned NOT NULL auto_increment PRIMARY KEY,
+f2 varchar(100) NOT NULL default ''
+);
+CREATE TABLE t2 (
+f1 varchar(10) NOT NULL default '',
+f2 char(3) NOT NULL default '',
+PRIMARY KEY  (`f1`),
+KEY `k1` (`f2`, `f1`)
+);
+INSERT INTO t1 values(NULL, '');
+INSERT INTO `t2` VALUES ('486878','WDT'),('486910','WDT');
+SELECT COUNT(*) FROM t1;
+COUNT(*)
+1
+SELECT min(t2.f1) FROM t1, t2 where t2.f2 = 'SIR' GROUP BY t1.f1;
+min(t2.f1)
+INSERT INTO t1 (f2)
+SELECT min(t2.f1) FROM t1, t2 where t2.f2 = 'SIR' GROUP BY t1.f1;
+SELECT COUNT(*) FROM t1;
+COUNT(*)
+1
+SELECT * FROM t1;
+f1	f2
+1	
+DROP TABLE t1, t2;
 CREATE TABLE t1 (x int, y int);
 CREATE TABLE t2 (z int, y int);
 CREATE TABLE t3 (a int, b int);
diff --git a/mysql-test/t/group_by.test b/mysql-test/t/group_by.test
index 3db8972bc6b..5db110e8d36 100644
--- a/mysql-test/t/group_by.test
+++ b/mysql-test/t/group_by.test
@@ -633,6 +633,28 @@ SELECT a FROM t1 ORDER BY "a" DESC;
 SELECT a FROM t1 ORDER BY `a` DESC;
 DROP TABLE t1;
 
+#
+# Bug #29717 INSERT INTO SELECT inserts values even if SELECT statement itself
+# returns empty
+# 
+CREATE TABLE t1 (
+    f1 int(10) unsigned NOT NULL auto_increment primary key,
+    f2 varchar(100) NOT NULL default ''
+);
+CREATE TABLE t2 (
+    f1 varchar(10) NOT NULL default '',
+    f2 char(3) NOT NULL default '',
+    PRIMARY KEY  (`f1`),
+    KEY `k1` (`f2`,`f1`)
+);
+
+INSERT INTO t1 values(NULL, '');
+INSERT INTO `t2` VALUES ('486878','WDT'),('486910','WDT');
+SELECT SQL_BUFFER_RESULT avg(t2.f1) FROM t1, t2 where t2.f2 = 'SIR' GROUP BY t1.f1;
+SELECT avg(t2.f1) FROM t1, t2 where t2.f2 = 'SIR' GROUP BY t1.f1;
+DROP TABLE t1, t2;
+
+
 # End of 4.1 tests
 
 #
diff --git a/mysql-test/t/insert_select.test b/mysql-test/t/insert_select.test
index 10bc58303ca..ace51ef61c7 100644
--- a/mysql-test/t/insert_select.test
+++ b/mysql-test/t/insert_select.test
@@ -239,6 +239,34 @@ show status like 'Handler_read%';
 
 DROP TABLE t1;
 
+#
+# Bug #29717 INSERT INTO SELECT inserts values even if SELECT statement itself returns empty
+#
+
+CREATE TABLE t1 (
+    f1 int(10) unsigned NOT NULL auto_increment PRIMARY KEY,
+    f2 varchar(100) NOT NULL default ''
+);
+CREATE TABLE t2 (
+    f1 varchar(10) NOT NULL default '',
+    f2 char(3) NOT NULL default '',
+    PRIMARY KEY  (`f1`),
+    KEY `k1` (`f2`, `f1`)
+);
+
+INSERT INTO t1 values(NULL, '');
+INSERT INTO `t2` VALUES ('486878','WDT'),('486910','WDT');
+SELECT COUNT(*) FROM t1;
+
+SELECT min(t2.f1) FROM t1, t2 where t2.f2 = 'SIR' GROUP BY t1.f1;
+
+INSERT INTO t1 (f2)
+  SELECT min(t2.f1) FROM t1, t2 where t2.f2 = 'SIR' GROUP BY t1.f1;
+
+SELECT COUNT(*) FROM t1;
+SELECT * FROM t1;
+DROP TABLE t1, t2;
+
 # End of 4.1 tests
 
 #