How to use posgresql 'interval' in Django?

Here is my PostgreSQL statement.

select round(sum("amount") filter(where "date">=now()-interval '12 months')/12,0) as avg_12month from "amountTab"

How to use this in Django?

I have an object called 'Devc', with attribute 'date'.

I want to get the sum of the specific data within past 12 months, not past 365 days.

edited Nov 21 '18 at 3:06

asked Nov 21 '18 at 2:31

Yvonne

615

add a comment |

Here is my PostgreSQL statement.

select round(sum("amount") filter(where "date">=now()-interval '12 months')/12,0) as avg_12month from "amountTab"

How to use this in Django?

I have an object called 'Devc', with attribute 'date'.

I want to get the sum of the specific data within past 12 months, not past 365 days.

edited Nov 21 '18 at 3:06

asked Nov 21 '18 at 2:31

Yvonne

615

add a comment |

Here is my PostgreSQL statement.

select round(sum("amount") filter(where "date">=now()-interval '12 months')/12,0) as avg_12month from "amountTab"

How to use this in Django?

I have an object called 'Devc', with attribute 'date'.

I want to get the sum of the specific data within past 12 months, not past 365 days.

edited Nov 21 '18 at 3:06

asked Nov 21 '18 at 2:31

Yvonne

615

Here is my PostgreSQL statement.

select round(sum("amount") filter(where "date">=now()-interval '12 months')/12,0) as avg_12month from "amountTab"

How to use this in Django?

I have an object called 'Devc', with attribute 'date'.

I want to get the sum of the specific data within past 12 months, not past 365 days.

django postgresql intervals

edited Nov 21 '18 at 3:06

asked Nov 21 '18 at 2:31

Yvonne

615

edited Nov 21 '18 at 3:06

asked Nov 21 '18 at 2:31

Yvonne

615

edited Nov 21 '18 at 3:06

asked Nov 21 '18 at 2:31

Yvonne

615

asked Nov 21 '18 at 2:31

Yvonne

615

asked Nov 21 '18 at 2:31

Yvonne

615

add a comment |

1 Answer
1

active

oldest

votes

You can try this to get the data within the past 12 months.

today= datetime.now()

current_month_first_day = today.replace(day = 1)

previous_month_last_day = current_month_first_day - timedelta(days = 1)

past_12_month_first_day = previous_month_last_day - timedelta(days = 360)

past_12_month_first_day = past_12_month_first_day.replace(day = 1)



 past_12_month_avg = Devc.objects.filter(date__range=(past_12_month_first_day,current_month_first_day)).aggregate(Sum('amount'))['amount']

answered Nov 21 '18 at 7:12

YvKl

1066

add a comment |

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1 Answer
1

active

oldest

votes

1 Answer
1

active

oldest

votes

You can try this to get the data within the past 12 months.

today= datetime.now()

current_month_first_day = today.replace(day = 1)

previous_month_last_day = current_month_first_day - timedelta(days = 1)

past_12_month_first_day = previous_month_last_day - timedelta(days = 360)

past_12_month_first_day = past_12_month_first_day.replace(day = 1)



 past_12_month_avg = Devc.objects.filter(date__range=(past_12_month_first_day,current_month_first_day)).aggregate(Sum('amount'))['amount']

answered Nov 21 '18 at 7:12

YvKl

1066

add a comment |

You can try this to get the data within the past 12 months.

today= datetime.now()

current_month_first_day = today.replace(day = 1)

previous_month_last_day = current_month_first_day - timedelta(days = 1)

past_12_month_first_day = previous_month_last_day - timedelta(days = 360)

past_12_month_first_day = past_12_month_first_day.replace(day = 1)



 past_12_month_avg = Devc.objects.filter(date__range=(past_12_month_first_day,current_month_first_day)).aggregate(Sum('amount'))['amount']

answered Nov 21 '18 at 7:12

YvKl

1066

add a comment |

You can try this to get the data within the past 12 months.

today= datetime.now()

current_month_first_day = today.replace(day = 1)

previous_month_last_day = current_month_first_day - timedelta(days = 1)

past_12_month_first_day = previous_month_last_day - timedelta(days = 360)

past_12_month_first_day = past_12_month_first_day.replace(day = 1)



 past_12_month_avg = Devc.objects.filter(date__range=(past_12_month_first_day,current_month_first_day)).aggregate(Sum('amount'))['amount']

answered Nov 21 '18 at 7:12

YvKl

1066

You can try this to get the data within the past 12 months.

today= datetime.now()

current_month_first_day = today.replace(day = 1)

previous_month_last_day = current_month_first_day - timedelta(days = 1)

past_12_month_first_day = previous_month_last_day - timedelta(days = 360)

past_12_month_first_day = past_12_month_first_day.replace(day = 1)



 past_12_month_avg = Devc.objects.filter(date__range=(past_12_month_first_day,current_month_first_day)).aggregate(Sum('amount'))['amount']

answered Nov 21 '18 at 7:12

YvKl

1066

answered Nov 21 '18 at 7:12

YvKl

1066

answered Nov 21 '18 at 7:12

YvKl

1066

answered Nov 21 '18 at 7:12

YvKl

1066

add a comment |

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