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Returning 1 from the set_progress_handler handler cancels query #4120

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4 changes: 4 additions & 0 deletions Doc/library/sqlite3.rst
Original file line number Diff line number Diff line change
Expand Up @@ -421,6 +421,10 @@ Connection Objects
If you want to clear any previously installed progress handler, call the
method with :const:`None` for *handler*.

Returning a non-zero value from the handler function will terminate the
currently executing query and cause it to raise a
``sqlite3.OperationalError`` exception.
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:exc:`sqlite3.OperationalError`



.. method:: set_trace_callback(trace_callback)

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