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- """
- Constants specific to the SQL storage portion of the ORM.
- """
- from django.utils.regex_helper import _lazy_re_compile
- # Size of each "chunk" for get_iterator calls.
- # Larger values are slightly faster at the expense of more storage space.
- GET_ITERATOR_CHUNK_SIZE = 100
- # Namedtuples for sql.* internal use.
- # How many results to expect from a cursor.execute call
- MULTI = 'multi'
- SINGLE = 'single'
- CURSOR = 'cursor'
- NO_RESULTS = 'no results'
- ORDER_DIR = {
- 'ASC': ('ASC', 'DESC'),
- 'DESC': ('DESC', 'ASC'),
- }
- ORDER_PATTERN = _lazy_re_compile(r'[-+]?[.\w]+$')
- # SQL join types.
- INNER = 'INNER JOIN'
- LOUTER = 'LEFT OUTER JOIN'
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