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	Fixed #5055 -- Changed Postgres DatabaseOperations.sql_flush() to use 'SELECT setval()' instead of 'ALTER SEQUENCE', because the latter only works with Postgres 7.3+. Thanks, Don Arbow
git-svn-id: http://code.djangoproject.com/svn/django/trunk@6009 bcc190cf-cafb-0310-a4f2-bffc1f526a37
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		@@ -52,28 +52,14 @@ class DatabaseOperations(BaseDatabaseOperations):
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            for sequence_info in sequences:
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                table_name = sequence_info['table']
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                column_name = sequence_info['column']
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                if column_name and len(column_name)>0:
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                    # sequence name in this case will be <table>_<column>_seq
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                    sql.append("%s %s %s %s %s %s;" % \
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                        (style.SQL_KEYWORD('ALTER'),
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                        style.SQL_KEYWORD('SEQUENCE'),
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                        style.SQL_FIELD(self.quote_name('%s_%s_seq' % (table_name, column_name))),
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                        style.SQL_KEYWORD('RESTART'),
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                        style.SQL_KEYWORD('WITH'),
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                        style.SQL_FIELD('1')
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                        )
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                    )
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                if column_name and len(column_name) > 0:
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                    sequence_name = '%s_%s_seq' % (table_name, column_name)
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                else:
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                    # sequence name in this case will be <table>_id_seq
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                    sql.append("%s %s %s %s %s %s;" % \
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                        (style.SQL_KEYWORD('ALTER'),
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                         style.SQL_KEYWORD('SEQUENCE'),
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                         style.SQL_FIELD(self.quote_name('%s_id_seq' % table_name)),
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                         style.SQL_KEYWORD('RESTART'),
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                         style.SQL_KEYWORD('WITH'),
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                         style.SQL_FIELD('1')
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                         )
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                    )
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                    sequence_name = '%s_id_seq' % table_name
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                sql.append("%s setval('%s', 1, false);" % \
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                    (style.SQL_KEYWORD('SELECT'),
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                    style.SQL_FIELD(self.quote_name(sequence_name)))
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                )
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            return sql
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        else:
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            return []
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