From 21d03cb08a6a0ebd17fc17b9bf77300a275fb989 Mon Sep 17 00:00:00 2001
From: Sergei Golubchik <serg@mariadb.org>
Date: Thu, 7 Oct 2021 12:03:34 +0200
Subject: [PATCH] MDEV-26654 ROW_NUMBER is wrong upon INSERT into Federated
 table

just a test case
---
 .../suite/federated/error_row_number.result   | 26 +++++++++++++++++++
 .../suite/federated/error_row_number.test     | 18 +++++++++++++
 2 files changed, 44 insertions(+)
 create mode 100644 mysql-test/suite/federated/error_row_number.result
 create mode 100644 mysql-test/suite/federated/error_row_number.test

diff --git a/mysql-test/suite/federated/error_row_number.result b/mysql-test/suite/federated/error_row_number.result
new file mode 100644
index 00000000000..a53f3a87a17
--- /dev/null
+++ b/mysql-test/suite/federated/error_row_number.result
@@ -0,0 +1,26 @@
+#
+#    MDEV-26654 ROW_NUMBER is wrong upon INSERT into Federated table
+#
+connect  master,127.0.0.1,root,,test,$MASTER_MYPORT,;
+connect  slave,127.0.0.1,root,,test,$SLAVE_MYPORT,;
+connection master;
+CREATE DATABASE federated;
+connection slave;
+CREATE DATABASE federated;
+connection master;
+create table t (pk int primary key);
+create table tfed engine=FEDERATED connection='mysql://root@localhost:$MASTER_MYPORT/test/t';
+insert into tfed values (1),(2),(1);
+ERROR 23000: Can't write; duplicate key in table 'tfed'
+get diagnostics condition 1 @val = row_number;
+# federated is doing bulk insert here, the exact row number is unknown
+select @val;
+@val
+0
+drop table tfed, t;
+connection master;
+DROP TABLE IF EXISTS federated.t1;
+DROP DATABASE IF EXISTS federated;
+connection slave;
+DROP TABLE IF EXISTS federated.t1;
+DROP DATABASE IF EXISTS federated;
diff --git a/mysql-test/suite/federated/error_row_number.test b/mysql-test/suite/federated/error_row_number.test
new file mode 100644
index 00000000000..8d943589e07
--- /dev/null
+++ b/mysql-test/suite/federated/error_row_number.test
@@ -0,0 +1,18 @@
+--echo #
+--echo #    MDEV-26654 ROW_NUMBER is wrong upon INSERT into Federated table
+--echo #
+
+--source suite/federated/have_federatedx.inc
+--source include/federated.inc
+--connection master
+
+create table t (pk int primary key);
+--evalp create table tfed engine=FEDERATED connection='mysql://root@localhost:$MASTER_MYPORT/test/t'
+--error ER_DUP_KEY
+insert into tfed values (1),(2),(1);
+get diagnostics condition 1 @val = row_number;
+--echo # federated is doing bulk insert here, the exact row number is unknown
+select @val;
+
+drop table tfed, t;
+--source include/federated_cleanup.inc