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-rw-r--r--plugin/type_inet/mysql-test/type_inet/type_inet6.result9
-rw-r--r--plugin/type_inet/mysql-test/type_inet/type_inet6.test9
-rw-r--r--plugin/type_inet/sql_type_inet.h1
3 files changed, 19 insertions, 0 deletions
diff --git a/plugin/type_inet/mysql-test/type_inet/type_inet6.result b/plugin/type_inet/mysql-test/type_inet/type_inet6.result
index 4cc1ac370a0..3dbbbccb100 100644
--- a/plugin/type_inet/mysql-test/type_inet/type_inet6.result
+++ b/plugin/type_inet/mysql-test/type_inet/type_inet6.result
@@ -1968,3 +1968,12 @@ def CAST(a AS BINARY(16777215)) 250 16777215 0 Y 128 0 63
def CAST(a AS BINARY(16777216)) 251 16777216 0 Y 128 0 63
CAST(a AS BINARY(0)) CAST(a AS BINARY(1)) CAST(a AS BINARY(16)) CAST(a AS BINARY(255)) CAST(a AS BINARY(256)) CAST(a AS BINARY(512)) CAST(a AS BINARY(513)) CAST(a AS BINARY(65532)) CAST(a AS BINARY(65533)) CAST(a AS BINARY(65534)) CAST(a AS BINARY(65535)) CAST(a AS BINARY(65536)) CAST(a AS BINARY(16777215)) CAST(a AS BINARY(16777216))
DROP TABLE t1;
+#
+# MDEV-20826 Wrong result of MIN(inet6) with GROUP BY
+#
+CREATE TABLE t1 (id INT, a INET6) ENGINE=MyISAM;
+INSERT INTO t1 VALUES (1, 'fff::'),(1, '8888::');
+SELECT MIN(a), MAX(a) FROM t1 GROUP BY id;
+MIN(a) MAX(a)
+fff:: 8888::
+DROP TABLE t1;
diff --git a/plugin/type_inet/mysql-test/type_inet/type_inet6.test b/plugin/type_inet/mysql-test/type_inet/type_inet6.test
index 875aaa0b7e9..8559748c7dd 100644
--- a/plugin/type_inet/mysql-test/type_inet/type_inet6.test
+++ b/plugin/type_inet/mysql-test/type_inet/type_inet6.test
@@ -1436,3 +1436,12 @@ SELECT
FROM t1;
--disable_metadata
DROP TABLE t1;
+
+--echo #
+--echo # MDEV-20826 Wrong result of MIN(inet6) with GROUP BY
+--echo #
+
+CREATE TABLE t1 (id INT, a INET6) ENGINE=MyISAM;
+INSERT INTO t1 VALUES (1, 'fff::'),(1, '8888::');
+SELECT MIN(a), MAX(a) FROM t1 GROUP BY id;
+DROP TABLE t1;
diff --git a/plugin/type_inet/sql_type_inet.h b/plugin/type_inet/sql_type_inet.h
index 970c3b63a3e..c00237cf4fc 100644
--- a/plugin/type_inet/sql_type_inet.h
+++ b/plugin/type_inet/sql_type_inet.h
@@ -386,6 +386,7 @@ public:
}
bool is_scalar_type() const override { return true; }
+ bool is_val_native_ready() const override { return true; }
bool can_return_int() const override { return false; }
bool can_return_decimal() const override { return false; }
bool can_return_real() const override { return false; }