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day 68 增删改查语法

發布時間：2023/12/18 编程问答 26 豆豆

生活随笔收集整理的這篇文章主要介紹了 day 68 增删改查语法小編覺得挺不錯的,現在分享給大家,幫大家做個參考.

1 普通正則

2 分組正則 ?

url(r'/blog/(\d+)/(\d+)',views.blog) ? ? blog(request,arq1,arq2) 按照位置傳參

3 分組命名

url(r'/blog/(?P<year>\d+)/(?P<month>\d+)',views.blog) ? ? blog(request,year,month)

4 ?用name 指定別名

url(r'/blog/(?P<year>\d+)/(?P<month>\d+)',views.blog,name ='blog') ? ? blog(request,year,month

涉及到了反向解析URL

４－１在html里面：{% ?url 'blog' 2012 12%}

４－２from django.urls import reverse reverse ('blog',arg=(2013,11))

5 用namespace 指定命名空間
url(r'/app01/',inclue(app01.urls,namespace='app01))?
?涉及到了反向解析URL
５－1 HTML 里面{% url 'app01:blog' 2012 11%}
５－２2 在views reverse('app01:blog' ,arg=(2010,33))

?--------------

通過get取值和通關過分組取值的用法和對比

get 和分組取值

1 HTML 里面{% url 'app01:blog' 2012 11%}
2 在views reverse('app01:blog' ,arg=(2010,33))

要在Django Console 打印出有sq語句在django 項目的配置信息中加上這個日志而且引用

logging

models 中插入這句在定義的類的下面的縮進行里這樣打印出來的結果對象就會是實際的內容
　　def __str__(self):
　　　　return '{}{}'.format(self.cname,self.first_day)
單表查詢的增刪改查?
單表查詢的API 介紹共13條
1 返回QuerySet對象的有8條
1 all():全部 2 filter()：過濾 3 exclude():不包括?
4 value（）值 5value_list() 值的列表 6 order_by() 排序正序
7 reverse（）反轉 8 distinct() 去重

models.Ban_list.objects.filter(id=7)
<QuerySet [<Ban_list: Linux 1212期2015-01-29>]>
(0.002) SELECT `app0001_ban_list`.`id`, `app0001_ban_list`.`cname`, `app0001_ban_list`.`first_day` FROM `app0001_ban_list` WHERE `app0001_ban_list`.`id` = 7 LIMIT 21; args=(7,)
(0.000) SELECT VERSION(); args=None
(0.001) SELECT `app0001_ban_list`.`id`, `app0001_ban_list`.`cname`, `app0001_ban_list`.`first_day` FROM `app0001_ban_list` WHERE `app0001_ban_list`.`id` = 7 LIMIT 21; args=(7,)

.all() filter() 支持鏈式操作 exclude() 不包含 .value() 單列多列是字典 .value_list() 元祖 .order_by() 排序 all().order_by('id)默認id排序 -id反序 .reverse() 和order_by('-id) .distinct() 去重保留前者

2返回數字的： 1 count()：計數行數

.count() 計算多少行

3返回布爾值的：1exists():是否存在

4 返回的是對象的：1 get() 得到的是一個對象 2 first():第一個對象 3 last() :最后一個對象

.get() 取單個對象 .first() .last() 對象

以下都是在左下角Python Console

?1 Queryset 對象8個

models.Ban_list.objects.get(id=7)
(0.001) SELECT @@SQL_AUTO_IS_NULL; args=None
(0.001) SELECT VERSION(); args=None
(0.002) SELECT `app0001_ban_list`.`id`, `app0001_ban_list`.`cname`, `app0001_ban_list`.`first_day` FROM `app0001_ban_list` WHERE `app0001_ban_list`.`id` = 7; args=(7,)
<Ban_list: Linux 1212期2015-01-29>

models.Ban_list.objects.all()
(0.001) SELECT `app0001_ban_list`.`id`, `app0001_ban_list`.`cname`, `app0001_ban_list`.`first_day` FROM `app0001_ban_list` LIMIT 21; args=()
<QuerySet [<Ban_list: Python 18期2023-10-19>, <Ban_list: Linux 1212期2015-01-29>, <Ban_list: 大數據1班2020-12-01>, <Ban_list: Python 11期2012-09-01>, <Ban_list: Linux 4期2019-12-23>, <Ban_list: Python 19期2016-10-19>, <Ban_list: 大數據2班2017-10-28>]>
(0.001) SELECT @@SQL_AUTO_IS_NULL; args=None
(0.001) SELECT `app0001_ban_list`.`id`, `app0001_ban_list`.`cname`, `app0001_ban_list`.`first_day` FROM `app0001_ban_list` LIMIT 21; args=()

models.Ban_list.objects.filter(id=7)
<QuerySet [<Ban_list: Linux 1212期2015-01-29>]>
(0.002) SELECT `app0001_ban_list`.`id`, `app0001_ban_list`.`cname`, `app0001_ban_list`.`first_day` FROM `app0001_ban_list` WHERE `app0001_ban_list`.`id` = 7 LIMIT 21; args=(7,)
(0.000) SELECT VERSION(); args=None
(0.001) SELECT `app0001_ban_list`.`id`, `app0001_ban_list`.`cname`, `app0001_ban_list`.`first_day` FROM `app0001_ban_list` WHERE `app0001_ban_list`.`id` = 7 LIMIT 21; args=(7,)

models.Ban_list.objects.filter(cname='大數據1班').first()
<Ban_list: 大數據1班2020-12-01>
(0.061) SELECT `app0001_ban_list`.`id`, `app0001_ban_list`.`cname`, `app0001_ban_list`.`first_day` FROM `app0001_ban_list` WHERE `app0001_ban_list`.`cname` = '大數據1班' ORDER BY `app0001_ban_list`.`id` ASC LIMIT 1; args=('大數據1班',)
models.Ban_list.objects.exclue(cname='大數據1班')
Traceback (most recent call last):
File "<input>", line 1, in <module>
AttributeError: 'Manager' object has no attribute 'exclue'

models.Ban_list.objects.exclude(cname='大數據1班')
(0.005) SELECT `app0001_ban_list`.`id`, `app0001_ban_list`.`cname`, `app0001_ban_list`.`first_day` FROM `app0001_ban_list` WHERE NOT (`app0001_ban_list`.`cname` = '大數據1班') LIMIT 21; args=('大數據1班',)
<QuerySet [<Ban_list: Python 18期2023-10-19>, <Ban_list: Linux 1212期2015-01-29>, <Ban_list: Python 11期2012-09-01>, <Ban_list: Linux 4期2019-12-23>, <Ban_list: Python?19期2016-10-19>, <Ban_list: 大數據2班2017-10-28>]>
(0.002) SELECT `app0001_ban_list`.`id`, `app0001_ban_list`.`cname`, `app0001_ban_list`.`first_day` FROM `app0001_ban_list` WHERE NOT (`app0001_ban_list`.`cname` = '大數據1班') LIMIT 21; args=('大數據1班',)

models.Ban_list.objects.exclude(cname='大數據1班').values('cname')
<QuerySet [{'cname': 'Python 18期'}, {'cname': 'Linux 1212期'}, {'cname': 'Python 11期'}, {'cname': 'Linux 4期'}, {'cname': 'Python 19期'}, {'cname': '大數據2班'}]>
(0.002) SELECT `app0001_ban_list`.`cname` FROM `app0001_ban_list` WHERE NOT (`app0001_ban_list`.`cname` = '大數據1班') LIMIT 21; args=('大數據1班',)
(0.001) SELECT `app0001_ban_list`.`cname` FROM `app0001_ban_list` WHERE NOT (`app0001_ban_list`.`cname` = '大數據1班') LIMIT 21; args=('大數據1班',)
(0.002) SELECT `app0001_ban_list`.`id`, `app0001_ban_list`.`cname`, `app0001_ban_list`.`first_day` FROM `app0001_ban_list` WHERE NOT (`app0001_ban_list`.`cname` = '大數據1班') LIMIT 21; args=('大數據1班',)

models.Ban_list.objects.exclude(cname='大數據1班').values('cname','first_day')
(0.001) SELECT `app0001_ban_list`.`cname`, `app0001_ban_list`.`first_day` FROM `app0001_ban_list` WHERE NOT (`app0001_ban_list`.`cname` = '大數據1班') LIMIT 21; args=('大數據1班',)
<QuerySet [{'cname': 'Python 18期', 'first_day': datetime.date(2023, 10, 19)}, {'cname': 'Linux 1212期', 'first_day': datetime.date(2015, 1, 29)}, {'cname': 'Python 11期', 'first_day': datetime.date(2012, 9, 1)}, {'cname': 'Linux 4期', 'first_day': datetime.date(2019, 12, 23)}, {'cname': 'Python 19期', 'first_day': datetime.date(2016, 10, 19)}, {'cname': '大數據2班', 'first_day': datetime.date(2017, 10, 28)}]>
(0.001) SELECT `app0001_ban_list`.`cname`, `app0001_ban_list`.`first_day` FROM `app0001_ban_list` WHERE NOT (`app0001_ban_list`.`cname` = '大數據1班') LIMIT 21; args=('大數據1班',)

models.Ban_list.objects.exclude(cname='大數據1班').values_list('cname','first_day')
(0.003) SELECT `app0001_ban_list`.`cname`, `app0001_ban_list`.`first_day` FROM `app0001_ban_list` WHERE NOT (`app0001_ban_list`.`cname` = '大數據1班') LIMIT 21; args=('大數據1班',)
<QuerySet [('Python 18期', datetime.date(2023, 10, 19)), ('Linux 1212期', datetime.date(2015, 1, 29)), ('Python 11期', datetime.date(2012, 9, 1)), ('Linux 4期', datetime.date(2019, 12, 23)), ('Python 19期', datetime.date(2016, 10, 19)), ('大數據2班', datetime.date(2017, 10, 28))]>
(0.001) SELECT `app0001_ban_list`.`cname`, `app0001_ban_list`.`first_day` FROM `app0001_ban_list` WHERE NOT (`app0001_ban_list`.`cname` = '大數據1班') LIMIT 21; args=('大數據1班',)

models.Ban_list.objects.exclude(cname='大數據1班').order_by('first_day')
<QuerySet [<Ban_list: Python 11期2012-09-01>, <Ban_list: Linux 1212期2015-01-29>, <Ban_list: Python 19期2016-10-19>, <Ban_list: 大數據2班2017-10-28>, <Ban_list: Linux 4期2019-12-23>, <Ban_list: Python 18期2023-10-19>]>
(0.002) SELECT `app0001_ban_list`.`id`, `app0001_ban_list`.`cname`, `app0001_ban_list`.`first_day` FROM `app0001_ban_list` WHERE NOT (`app0001_ban_list`.`cname` = '大數據1班') ORDER BY `app0001_ban_list`.`first_day` ASC LIMIT 21; args=('大數據1班',)
(0.001) SELECT `app0001_ban_list`.`id`, `app0001_ban_list`.`cname`, `app0001_ban_list`.`first_day` FROM `app0001_ban_list` WHERE NOT (`app0001_ban_list`.`cname` = '大數據1班') ORDER BY `app0001_ban_list`.`first_day` ASC LIMIT 21; args=('大數據1班',)

models.Ban_list.objects.all().order_by('first_day')
(0.002) SELECT `app0001_ban_list`.`id`, `app0001_ban_list`.`cname`, `app0001_ban_list`.`first_day` FROM `app0001_ban_list` ORDER BY `app0001_ban_list`.`first_day` ASC LIMIT 21; args=()
<QuerySet [<Ban_list: Python 11期2012-09-01>, <Ban_list: Linux 1212期2015-01-29>, <Ban_list: Python 19期2016-10-19>, <Ban_list: 大數據2班2017-10-28>, <Ban_list: 大數據1班2018-01-10>, <Ban_list: Linux 4期2019-12-23>, <Ban_list: 大數據1班2020-12-01>, <Ban_list: Python 18期2023-10-19>]>
(0.002) SELECT `app0001_ban_list`.`id`, `app0001_ban_list`.`cname`, `app0001_ban_list`.`first_day` FROM `app0001_ban_list` ORDER BY `app0001_ban_list`.`first_day` ASC LIMIT 21; args=()

models.Ban_list.objects.all()
(0.002) SELECT `app0001_ban_list`.`id`, `app0001_ban_list`.`cname`, `app0001_ban_list`.`first_day` FROM `app0001_ban_list` LIMIT 21; args=()
<QuerySet [<Ban_list: Python 18期2023-10-19>, <Ban_list: Linux 1212期2015-01-29>, <Ban_list: 大數據1班2020-12-01>, <Ban_list: Python 11期2012-09-01>, <Ban_list: Linux 4期2019-12-23>, <Ban_list: Python 19期2016-10-19>, <Ban_list: 大數據2班2017-10-28>, <Ban_list: 大數據1班2018-01-10>]>
(0.001) SELECT `app0001_ban_list`.`id`, `app0001_ban_list`.`cname`, `app0001_ban_list`.`first_day` FROM `app0001_ban_list` LIMIT 21; args=()

models.Ban_list.objects.all().order_by('id')
(0.002) SELECT `app0001_ban_list`.`id`, `app0001_ban_list`.`cname`, `app0001_ban_list`.`first_day` FROM `app0001_ban_list` ORDER BY `app0001_ban_list`.`id` ASC LIMIT 21; args=()
<QuerySet [<Ban_list: Python 18期2023-10-19>, <Ban_list: Linux 1212期2015-01-29>, <Ban_list: 大數據1班2020-12-01>, <Ban_list: Python 11期2012-09-01>, <Ban_list: Linux 4期2019-12-23>, <Ban_list: Python 19期2016-10-19>, <Ban_list: 大數據2班2017-10-28>, <Ban_list: 大數據1班2018-01-10>]>
(0.002) SELECT `app0001_ban_list`.`id`, `app0001_ban_list`.`cname`, `app0001_ban_list`.`first_day` FROM `app0001_ban_list` ORDER BY `app0001_ban_list`.`id` ASC LIMIT 21; args=()

models.Ban_list.objects.all().order_by('-id')
(0.002) SELECT `app0001_ban_list`.`id`, `app0001_ban_list`.`cname`, `app0001_ban_list`.`first_day` FROM `app0001_ban_list` ORDER BY `app0001_ban_list`.`id` DESC LIMIT 21; args=()
<QuerySet [<Ban_list: 大數據1班2018-01-10>, <Ban_list: 大數據2班2017-10-28>, <Ban_list: Python 19期2016-10-19>, <Ban_list: Linux 4期2019-12-23>, <Ban_list: Python 11期2012-09-01>, <Ban_list: 大數據1班2020-12-01>, <Ban_list: Linux 1212期2015-01-29>, <Ban_list: Python 18期2023-10-19>]>
(0.001) SELECT `app0001_ban_list`.`id`, `app0001_ban_list`.`cname`, `app0001_ban_list`.`first_day` FROM `app0001_ban_list` ORDER BY `app0001_ban_list`.`id` DESC LIMIT 21; args=()

models.Ban_list.objects.all().reverse()
<QuerySet [<Ban_list: Python 18期2023-10-19>, <Ban_list: Linux 1212期2015-01-29>, <Ban_list: 大數據1班2020-12-01>, <Ban_list: Python 11期2012-09-01>, <Ban_list: Linux 4期2019-12-23>, <Ban_list: Python 19期2016-10-19>, <Ban_list: 大數據2班2017-10-28>, <Ban_list: 大數據1班2018-01-10>]>
(0.002) SELECT `app0001_ban_list`.`id`, `app0001_ban_list`.`cname`, `app0001_ban_list`.`first_day` FROM `app0001_ban_list` LIMIT 21; args=()
(0.001) SELECT `app0001_ban_list`.`id`, `app0001_ban_list`.`cname`, `app0001_ban_list`.`first_day` FROM `app0001_ban_list` LIMIT 21; args=()

models.Ban_list.objects.all().order_by('id').reverse()
(0.001) SELECT `app0001_ban_list`.`id`, `app0001_ban_list`.`cname`, `app0001_ban_list`.`first_day` FROM `app0001_ban_list` ORDER BY `app0001_ban_list`.`id` DESC LIMIT 21; args=()
<QuerySet [<Ban_list: 大數據1班2018-01-10>, <Ban_list: 大數據2班2017-10-28>, <Ban_list: Python 19期2016-10-19>, <Ban_list: Linux 4期2019-12-23>, <Ban_list: Python 11期2012-09-01>, <Ban_list: 大數據1班2020-12-01>, <Ban_list: Linux 1212期2015-01-29>, <Ban_list: Python 18期2023-10-19>]>
(0.002) SELECT `app0001_ban_list`.`id`, `app0001_ban_list`.`cname`, `app0001_ban_list`.`first_day` FROM `app0001_ban_list` ORDER BY `app0001_ban_list`.`id` DESC LIMIT 21; args=()

models.Ban_list.objects.values('cname').distinct()
(0.003) SELECT DISTINCT `app0001_ban_list`.`cname` FROM `app0001_ban_list` LIMIT 21; args=()
<QuerySet [{'cname': 'Python 18期'}, {'cname': 'Linux 1212期'}, {'cname': '大數據1班'}, {'cname': 'Python 11期'}, {'cname': 'Linux 4期'}, {'cname': 'Python 19期'}, {'cname': '大數據2班'}]>
(0.002) SELECT DISTINCT `app0001_ban_list`.`cname` FROM `app0001_ban_list` LIMIT 21; args=()

2 數字的一個
models.Ban_list.objects.all().count()
8
(0.001) SELECT COUNT(*) AS `__count` FROM `app0001_ban_list`; args=()

3對象的3個
models.Ban_list.objects.all().first()
<Ban_list: Python 18期2023-10-19>
(0.001) SELECT `app0001_ban_list`.`id`, `app0001_ban_list`.`cname`, `app0001_ban_list`.`first_day` FROM `app0001_ban_list` ORDER BY `app0001_ban_list`.`id` ASC LIMIT 1; args=()

models.Ban_list.objects.all().last()
<Ban_list: 大數據1班2018-01-10>
(0.001) SELECT `app0001_ban_list`.`id`, `app0001_ban_list`.`cname`, `app0001_ban_list`.`first_day` FROM `app0001_ban_list` ORDER BY `app0001_ban_list`.`id` DESC LIMIT 1; args=()
models.Ban_list.objects.get(id=7)
<Ban_list: Linux 1212期2015-01-29>
(0.002) SELECT `app0001_ban_list`.`id`, `app0001_ban_list`.`cname`, `app0001_ban_list`.`first_day` FROM `app0001_ban_list` WHERE `app0001_ban_list`.`id` = 7; args=(7,)

models.Ban_list.objects.filter(first_day__month=12)
<QuerySet [<Ban_list: 大數據1班2020-12-01>, <Ban_list: Linux 4期2019-12-23>, <Ban_list: linux 12期2017-12-12>]>
(0.014) SELECT `app0001_ban_list`.`id`, `app0001_ban_list`.`cname`, `app0001_ban_list`.`first_day` FROM `app0001_ban_list` WHERE EXTRACT(MONTH FROM `app0001_ban_list`.`first_day`) = 12 LIMIT 21; args=(12,)
(0.001) SELECT `app0001_ban_list`.`id`, `app0001_ban_list`.`cname`, `app0001_ban_list`.`first_day` FROM `app0001_ban_list` WHERE EXTRACT(MONTH FROM `app0001_ban_list`.`first_day`) = 12 LIMIT 21; args=(12,)
models.Ban_list.objects.filter(first_day__month=12,first_day__year=2018)
(0.001) SELECT `app0001_ban_list`.`id`, `app0001_ban_list`.`cname`, `app0001_ban_list`.`first_day` FROM `app0001_ban_list` WHERE (EXTRACT(MONTH FROM `app0001_ban_list`.`first_day`) = 12 AND `app0001_ban_list`.`first_day` BETWEEN '2018-01-01' AND '2018-12-31') LIMIT 21; args=(12, '2018-01-01', '2018-12-31')
<QuerySet []>
(0.001) SELECT `app0001_ban_list`.`id`, `app0001_ban_list`.`cname`, `app0001_ban_list`.`first_day` FROM `app0001_ban_list` WHERE (EXTRACT(MONTH FROM `app0001_ban_list`.`first_day`) = 12 AND `app0001_ban_list`.`first_day` BETWEEN '2018-01-01' AND '2018-12-31') LIMIT 21; args=(12, '2018-01-01', '2018-12-31')

邏輯運算

models.Ban_list.objects.filter(id__gt=1) ? 大于
(0.076) SELECT `app0001_ban_list`.`id`, `app0001_ban_list`.`cname`, `app0001_ban_list`.`first_day` FROM `app0001_ban_list` WHERE `app0001_ban_list`.`id` > 1 LIMIT 21; args=(1,)
<QuerySet [<Ban_list: Python 18期2023-10-19>, <Ban_list: Linux 1212期2015-01-29>, <Ban_list: 大數據1班2020-12-01>, <Ban_list: Python 11期2012-09-01>, <Ban_list: Linux 4期2019-12-23>, <Ban_list: Python 19期2016-10-19>, <Ban_list: 大數據2班2017-10-28>, <Ban_list: 大數據1班2018-01-10>]>
(0.014) SELECT `app0001_ban_list`.`id`, `app0001_ban_list`.`cname`, `app0001_ban_list`.`first_day` FROM `app0001_ban_list` WHERE `app0001_ban_list`.`id` > 1 LIMIT 21; args=(1,)

models.Ban_list.objects.filter(id__lt=10) ?小于
<QuerySet [<Ban_list: Python 18期2023-10-19>, <Ban_list: Linux 1212期2015-01-29>]>
(0.017) SELECT `app0001_ban_list`.`id`, `app0001_ban_list`.`cname`, `app0001_ban_list`.`first_day` FROM `app0001_ban_list` WHERE `app0001_ban_list`.`id` < 10 LIMIT 21; args=(10,)
(0.001) SELECT `app0001_ban_list`.`id`, `app0001_ban_list`.`cname`, `app0001_ban_list`.`first_day` FROM `app0001_ban_list` WHERE `app0001_ban_list`.`id` < 10 LIMIT 21; args=(10,)

models.Ban_list.objects.filter(id__in=[2,7,2]) 包含里面
(0.001) SELECT `app0001_ban_list`.`id`, `app0001_ban_list`.`cname`, `app0001_ban_list`.`first_day` FROM `app0001_ban_list` WHERE `app0001_ban_list`.`id` IN (2, 7) LIMIT 21; args=(2, 7)
<QuerySet [<Ban_list: Python 18期2023-10-19>, <Ban_list: Linux 1212期2015-01-29>]>
(0.001) SELECT `app0001_ban_list`.`id`, `app0001_ban_list`.`cname`, `app0001_ban_list`.`first_day` FROM `app0001_ban_list` WHERE `app0001_ban_list`.`id` IN (2, 7) LIMIT 21; args=(2, 7)

查找

models.Ban_list.objects.filter(cname__contains='大數據') ? ?模糊查找
(0.030) SELECT `app0001_ban_list`.`id`, `app0001_ban_list`.`cname`, `app0001_ban_list`.`first_day` FROM `app0001_ban_list` WHERE `app0001_ban_list`.`cname` LIKE BINARY '%大數據%' LIMIT 21; args=('%大數據%',)
<QuerySet [<Ban_list: 大數據1班2020-12-01>, <Ban_list: 大數據2班2017-10-28>, <Ban_list: 大數據1班2018-01-10>]>
(0.001) SELECT `app0001_ban_list`.`id`, `app0001_ban_list`.`cname`, `app0001_ban_list`.`first_day` FROM `app0001_ban_list` WHERE `app0001_ban_list`.`cname` LIKE BINARY '%大數據%' LIMIT 21; args=('%大數據%',)

不區分大小寫的cname__icontains

models.Ban_list.objects.filter(cname__icontains='linux')
(0.001) SELECT `app0001_ban_list`.`id`, `app0001_ban_list`.`cname`, `app0001_ban_list`.`first_day` FROM `app0001_ban_list` WHERE `app0001_ban_list`.`cname` LIKE '%linux%' LIMIT 21; args=('%linux%',)
<QuerySet [<Ban_list: Linux 1212期2015-01-29>, <Ban_list: Linux 4期2019-12-23>, <Ban_list: linux 12期2017-12-12>]>
(0.001) SELECT `app0001_ban_list`.`id`, `app0001_ban_list`.`cname`, `app0001_ban_list`.`first_day` FROM `app0001_ban_list` WHERE `app0001_ban_list`.`cname` LIKE '%linux%' LIMIT 21; args=('%linux%',)

關于時間查找

import datetime
(0.001) SELECT `app0001_ban_list`.`id`, `app0001_ban_list`.`cname`, `app0001_ban_list`.`first_day` FROM `app0001_ban_list` WHERE `app0001_ban_list`.`cname` LIKE '%linux%' LIMIT 21; args=('%linux%',)
datetime.datetime.now()
datetime.datetime(2018, 1, 22, 21, 7, 48, 987579)

datetime.datetime.now().year
2018

datetime.datetime.now().day
22

models.Ban_list.objects.filter(first_day__month=12)
<QuerySet [<Ban_list: 大數據1班2020-12-01>, <Ban_list: Linux 4期2019-12-23>, <Ban_list: linux 12期2017-12-12>]>
(0.014) SELECT `app0001_ban_list`.`id`, `app0001_ban_list`.`cname`, `app0001_ban_list`.`first_day` FROM `app0001_ban_list` WHERE EXTRACT(MONTH FROM `app0001_ban_list`.`first_day`) = 12 LIMIT 21; args=(12,)
(0.001) SELECT `app0001_ban_list`.`id`, `app0001_ban_list`.`cname`, `app0001_ban_list`.`first_day` FROM `app0001_ban_list` WHERE EXTRACT(MONTH FROM `app0001_ban_list`.`first_day`) = 12 LIMIT 21; args=(12,)

models.Ban_list.objects.filter(first_day__month=12,first_day__year=2018)
(0.001) SELECT `app0001_ban_list`.`id`, `app0001_ban_list`.`cname`, `app0001_ban_list`.`first_day` FROM `app0001_ban_list` WHERE (EXTRACT(MONTH FROM `app0001_ban_list`.`first_day`) = 12 AND `app0001_ban_list`.`first_day` BETWEEN '2018-01-01' AND '2018-12-31') LIMIT 21; args=(12, '2018-01-01', '2018-12-31')
<QuerySet []>
(0.001) SELECT `app0001_ban_list`.`id`, `app0001_ban_list`.`cname`, `app0001_ban_list`.`first_day` FROM `app0001_ban_list` WHERE (EXTRACT(MONTH FROM `app0001_ban_list`.`first_day`) = 12 AND `app0001_ban_list`.`first_day` BETWEEN '2018-01-01' AND '2018-12-31') LIMIT 21; args=(12, '2018-01-01', '2018-12-31')

轉載于:https://www.cnblogs.com/xiaoluoboer/p/8331180.html

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