Django models字段查詢謂詞表

謂詞	含義	示例	等價SQL語句
exact	精確等於	Comment.objects.filter(id__exact=14)	select * from Comment where id=14
iexact	大小寫不敏感的等於	Comment.objects.filter(headline__iexact=’I like this’)	select * from Comment where upper(headline)=’I LIKE THIS’
contains	模糊匹配	Comment.objects.filter(headline__contains=’good’)	select * from Comment where headline like 「%good%」
in	包含	Comment.objects.filter(id__in=[1,5,9])	select * from Comment where id in (1,5,9)
gt	大於	Comment.objects.filter(n_visits__gt=30)	select * from Comment where n_visits>30
gte	大於等於	Comment.objects.filter(n_visits__gte=30)	select * from COmment where n_visits>=30
lt	小於
lte	小於等於
startswith	以…開頭	Comment.objects.filter(body_text__startswith=」Hello」)	select * from Comment where body_text like ‘Hello%’
endswith	以…結尾
range	在…範圍內	start_date=datetime.date(2015,1,1) end_date=datetime.date(2015.2.1) Comment.objects.filter(     pub_date__range=(start_date,end_date) )	select * from Comment where pub_date between ‘2015-1-1’ and ‘2015-2-1’
year	年	Comment.objects.filter(     pub_date__year=2015 )	select * from Comment where pub_date between ‘2015-1-1 0:0:0’ and ‘2015-12-31 23:59:59’
month	月
day	日
week_day	星期幾
isnull	是否爲空	Comment.objects.filter(     pub_date__isnull=True )	select * from Comment where pub_date is NULL

 

filter(**kwargs):　返回符合篩選條件的數據集

exclude(**kwargs):   返回不符合篩選條件的數據集

Comment.objects.filter(pub_date__year=2015)

多個filter和exclude能夠連接在一塊兒查詢

Comment.objects.filter(pub_date__year=2015).exclude(pub_date__month=1).exclude(n_visits__exact=0)

get() :查詢單條記錄，注意沒有查詢到數據的時候會報錯

Comment.objects.get(id_exact=1)

all():  查詢全部數據

Comment.objects.all()
Comment.objects.all()[:10]
Comment.objects.all[10:20]

order_by():   排序

Comment.objects.order_by('headline')