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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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commit 861b28f37e790e13dfae45da5042588f0ab57b1a 1 parent f8e26f5
@adrianholovaty adrianholovaty authored
Showing with 7 additions and 21 deletions.
  1. +7 −21 django/db/backends/postgresql/operations.py
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28 django/db/backends/postgresql/operations.py
@@ -52,28 +52,14 @@ def sql_flush(self, style, tables, sequences):
for sequence_info in sequences:
table_name = sequence_info['table']
column_name = sequence_info['column']
- if column_name and len(column_name)>0:
- # sequence name in this case will be <table>_<column>_seq
- sql.append("%s %s %s %s %s %s;" % \
- (style.SQL_KEYWORD('ALTER'),
- style.SQL_KEYWORD('SEQUENCE'),
- style.SQL_FIELD(self.quote_name('%s_%s_seq' % (table_name, column_name))),
- style.SQL_KEYWORD('RESTART'),
- style.SQL_KEYWORD('WITH'),
- style.SQL_FIELD('1')
- )
- )
+ if column_name and len(column_name) > 0:
+ sequence_name = '%s_%s_seq' % (table_name, column_name)
else:
- # sequence name in this case will be <table>_id_seq
- sql.append("%s %s %s %s %s %s;" % \
- (style.SQL_KEYWORD('ALTER'),
- style.SQL_KEYWORD('SEQUENCE'),
- style.SQL_FIELD(self.quote_name('%s_id_seq' % table_name)),
- style.SQL_KEYWORD('RESTART'),
- style.SQL_KEYWORD('WITH'),
- style.SQL_FIELD('1')
- )
- )
+ sequence_name = '%s_id_seq' % table_name
+ sql.append("%s setval('%s', 1, false);" % \
+ (style.SQL_KEYWORD('SELECT'),
+ style.SQL_FIELD(self.quote_name(sequence_name)))
+ )
return sql
else:
return []
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