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Revision 3040

Added by Aaron Marcuse-Kubitza about 12 years ago

sql.py: DbConn.DbCursor.execute(): Allow ADD COLUMN to be cached if it has a distinguishing comment, because then the rest of query will be unique in the face of name collisions

View differences:

lib/sql.py
238 238 
            # Always cache certain queries
239 239 
            if query.startswith('CREATE') or query.startswith('ALTER'):
240 240 
                # structural changes
241 
                if query.find('ADD COLUMN') < 0: # rest of query must be unique
241 
                # Rest of query must be unique in the face of name collisions,
242 
                # so don't cache ADD COLUMN unless it has distinguishing comment
243 
                if query.find('ADD COLUMN') < 0 or query.endswith('*/'):
242 244 
                    self._cache_result()
243 245 
            elif self.rowcount == 0 and query.startswith('SELECT'): # empty
244 246 
                consume_rows(self) # fetch all rows so result will be cached

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