Optimize Handler_read_rnd by removing ORDER BY clause (#448)

* fix: remove order by clause to prevent increasing handler_read_rnd

* fix: add sort by ordinal_position outside of query exectuion

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Co-authored-by: davinc71998 <[email protected]>

Author: soulee-dev

pymysqlreplication/binlogstream.py

@@ -651,9 +651,8 @@ def __get_table_information(self, schema, table):
                         information_schema.columns
                     WHERE
                         table_schema = %s AND table_name = %s
-                    ORDER BY ORDINAL_POSITION
                     """, (schema, table))
-                result = cur.fetchall()
+                result = sorted(cur.fetchall(), key=lambda x: x['ORDINAL_POSITION'])
                 cur.close()
 
                 return result