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-rw-r--r--mysql-test/main/insert_select.result19
1 files changed, 19 insertions, 0 deletions
diff --git a/mysql-test/main/insert_select.result b/mysql-test/main/insert_select.result
index 5094638c92b..e85c4982137 100644
--- a/mysql-test/main/insert_select.result
+++ b/mysql-test/main/insert_select.result
@@ -865,3 +865,22 @@ t2 CREATE TABLE `t2` (
) ENGINE=MyISAM DEFAULT CHARSET=latin1
drop table t1, t2;
End of 5.5 tests
+#
+# Beginning of 10.2 test
+#
+# MDEV-26698: Incorrect row number upon INSERT .. SELECT from the same
+# table: rows are counted twice
+#
+CREATE TABLE t1(a TINYINT);
+INSERT INTO t1 VALUES (1), (100);
+INSERT INTO t1 SELECT a*2 FROM t1;
+Warnings:
+Warning 1264 Out of range value for column 'a' at row 2
+TRUNCATE TABLE t1;
+# using ORDER BY
+INSERT INTO t1 VALUES(1), (2), (100), (3);
+INSERT INTO t1 SELECT a*2 FROM t1 ORDER BY a;
+Warnings:
+Warning 1264 Out of range value for column 'a' at row 4
+DROP TABLE t1;
+# End of 10.2 test