MDEV-21612 - remove COM_MULTI from server and C/C

The COM_MULTI did not take off. No connector is using it.
Remove related code from server, and client.
If anything it is a step simplification of already-bloated
dispatch_command(), and related code.

1 files changed, 11 insertions, 0 deletions

diff --git a/tests/mysql_client_test.c b/tests/mysql_client_test.c
index 6a6f626ae8c..e656b85ab65 100644
--- a/tests/mysql_client_test.c
+++ b/tests/mysql_client_test.c
@@ -20986,6 +20986,16 @@ static void test_mdev20261()
 }
 
 
+static void test_execute_direct()
+{
+#ifndef EMBEDDED_LIBRARY
+  MYSQL_STMT* stmt= mysql_stmt_init(mysql);
+  int rc= mariadb_stmt_execute_direct(stmt,"do 1",-1);
+  myquery(rc);
+  mysql_stmt_close(stmt);
+#endif
+}
+
 static struct my_tests_st my_tests[]= {
   { "disable_query_logs", disable_query_logs },
   { "test_view_sp_list_fields", test_view_sp_list_fields },
@@ -21281,6 +21291,7 @@ static struct my_tests_st my_tests[]= {
   { "test_explain_meta", test_explain_meta },
   { "test_mdev18408", test_mdev18408 },
   { "test_mdev20261", test_mdev20261 },
+  { "test_execute_direct", test_execute_direct },
   { 0, 0 }
 };