* Handled few cases caused by Percona mysqldump.

* Now mysqldump can work without --column-statistics=false flag.

lib/ProxySQL_Admin.cpp

@@ -4385,6 +4385,16 @@ void admin_session_handler(MySQL_Session *sess, void *_pa, PtrSize_t *pkt) {
 			!strncmp("/*!40103 SET ", query_no_space, 13) ||
 			!strncmp("/*!40111 SET ", query_no_space, 13) ||
 			!strncmp("/*!80000 SET ", query_no_space, 13) ||
+			!strncmp("/*!50503 SET ", query_no_space, 13) ||
+			!strncmp("/*!50717 SET ", query_no_space, 13) ||
+			!strncmp("/*!50717 SELECT ", query_no_space, strlen("/*!50717 SELECT ")) ||
+			!strncmp("/*!50717 PREPARE ", query_no_space, strlen("/*!50717 PREPARE ")) ||
+			!strncmp("/*!50717 EXECUTE ", query_no_space, strlen("/*!50717 EXECUTE ")) ||
+			!strncmp("/*!50717 DEALLOCATE ", query_no_space, strlen("/*!50717 DEALLOCATE ")) ||
+			!strncmp("/*!50112 SET ", query_no_space, strlen("/*!50112 SET ")) ||
+			!strncmp("/*!50112 PREPARE ", query_no_space, strlen("/*!50112 PREPARE ")) ||
+			!strncmp("/*!50112 EXECUTE ", query_no_space, strlen("/*!50112 EXECUTE ")) ||
+			!strncmp("/*!50112 DEALLOCATE ", query_no_space, strlen("/*!50112 DEALLOCATE ")) ||
 			!strncmp("/*!40000 ALTER TABLE", query_no_space, strlen("/*!40000 ALTER TABLE"))
 				||
 			!strncmp("/*!40100 SET @@SQL_MODE='' */", query_no_space, strlen("/*!40100 SET @@SQL_MODE='' */"))
@@ -4405,6 +4415,19 @@ void admin_session_handler(MySQL_Session *sess, void *_pa, PtrSize_t *pkt) {
 			run_query=false;
 			goto __run_query;
 		}
+
+		if (!strncmp("SHOW STATUS LIKE 'binlog_snapshot_gtid_executed'", query_no_space, strlen("SHOW STATUS LIKE 'binlog_snapshot_gtid_executed'"))) {
+			l_free(query_length, query);
+			query = l_strdup("SELECT variable_name AS Variable_name, Variable_value AS Value FROM global_variables WHERE 1=0");
+			query_length = strlen(query)+1;
+			goto __run_query;
+		}
+		if (!strncmp("SELECT COLUMN_NAME, JSON_EXTRACT(HISTOGRAM, '$.\"number-of-buckets-specified\"') FROM information_schema.COLUMN_STATISTICS", query_no_space, strlen("SELECT COLUMN_NAME, JSON_EXTRACT(HISTOGRAM, '$.\"number-of-buckets-specified\"') FROM information_schema.COLUMN_STATISTICS"))) {
+			l_free(query_length, query);
+			query = l_strdup("SELECT variable_name AS COLUMN_NAME, Variable_value AS 'JSON_EXTRACT(HISTOGRAM, ''$.\"number-of-buckets-specified\"'')' FROM global_variables WHERE 1=0");
+			query_length = strlen(query)+1;
+			goto __run_query;
+		}
 		if (!strncmp("SELECT COUNT(*) FROM INFORMATION_SCHEMA.TABLES WHERE table_schema = 'performance_schema' AND table_name = 'session_variables'", query_no_space, strlen("SELECT COUNT(*) FROM INFORMATION_SCHEMA.TABLES WHERE table_schema = 'performance_schema' AND table_name = 'session_variables'")))  {
 			l_free(query_length,query);
 			query=l_strdup("SELECT 0 as 'COUNT(*)'");