WL#16285 BUG#36126909 BUG#35810050: Remake Multi Statement Execution

With this work log, the single and multi statement
execution workflow is unified, as now there is no
need to use the option `multi` to run a multi statement
via `cursor.execute()`.

Additionally, the workflow for traversing result sets
generated from a multi statement execution is remade.

Change-Id: I38a415f1f9f1b6f45ddd2c4ec81b1e03e6ba6f1e

Author: oscpache

CHANGES.txt

@@ -8,6 +8,13 @@ Copyright (c) 2009, 2024, Oracle and/or its affiliates.
 Full release notes:
  http://dev.mysql.com/doc/relnotes/connector-python/en/
 
+v9.2.0
+======
+
+- WL16285: Remake Multi Statement Execution
+- BUG#36126909: "Unread result found" exception/bad MySQLCursor.statement when query text contains code comments
+- BUG#35810050: Executing multiple statements fails when importing Sakila
+
 v9.1.0
 ======
 

mysql-connector-python/examples/multi_resultsets.py

@@ -67,22 +67,25 @@ def main(config):
         "SELECT name FROM names",
     ]
 
-    # Note 'multi=True' when calling cursor.execute()
-    for result in cursor.execute(" ; ".join(stmts), multi=True):
-        if result.with_rows:
-            if result.statement == stmts[3]:
+    cursor.execute(";".join(stmts), map_results=True)
+    while True:
+        if cursor.with_rows:
+            if cursor.statement == stmts[3]:
                 output.append(
-                    "Names in table: " + " ".join([name[0] for name in result])
+                    "Names in table: " + " ".join([name[0] for name in cursor])
                 )
             else:
-                output.append("Number of rows: {0}".format(result.fetchone()[0]))
+                output.append("Number of rows: {0}".format(cursor.fetchone()[0]))
         else:
             output.append(
                 "Inserted {0} row{1}".format(
-                    result.rowcount, "s" if result.rowcount > 1 else ""
+                    cursor.rowcount, "s" if cursor.rowcount > 1 else ""
                 )
             )
 
+        if cursor.nextset() is None:
+            break
+
     cursor.execute(stmt_drop)
 
     cursor.close()