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Factored out database-specific date_trunc behavior into dbmod.get_date_trunc_sql(). Refs #46

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git-svn-id: http://code.djangoproject.com/svn/django/trunk@161 bcc190cf-cafb-0310-a4f2-bffc1f526a37
This commit is contained in:
Adrian Holovaty 2005-07-17 20:16:06 +00:00
parent d4ddc06021
commit b1c543d091
4 changed files with 27 additions and 3 deletions
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6
django/core/db/backends/postgresql.py
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@ -63,8 +63,14 @@ def get_last_insert_id(cursor, table_name, pk_name):
def get_date_extract_sql(lookup_type, table_name):
# lookup_type is 'year', 'month', 'day'
# http://www.postgresql.org/docs/8.0/static/functions-datetime.html#FUNCTIONS-DATETIME-EXTRACT
return "EXTRACT('%s' FROM %s)" % (lookup_type, table_name)
def get_date_trunc_sql(lookup_type, field_name):
# lookup_type is 'year', 'month', 'day'
# http://www.postgresql.org/docs/8.0/static/functions-datetime.html#FUNCTIONS-DATETIME-TRUNC
return "DATE_TRUNC('%s', %s)" % (lookup_type, field_name)
# Register these custom typecasts, because Django expects dates/times to be
# in Python's native (standard-library) datetime/time format, whereas psycopg
# use mx.DateTime by default.