First day of next month: Get the first day of the current month and add 1 month?

60.1K Asked by JoeShort in SQL Server , Asked on Dec 19, 2019

These kinds of functions are used in procedure/ reports, SSIS ETLS to extract the data based on the dates. Below are the functions with logic explanation:

1. First day of current month:

      select DATEADD(mm, DATEDIFF(m,0,GETDATE()),0):

in this we have taken out the difference between the months from 0 to current date and then add the difference in 0 this will return the first day of current month.

2. Last day of current month:

      SELECT cast(DATEADD(s,-1,DATEADD(mm, DATEDIFF(m,0,GETDATE())+1,0)) as date):starting from innermost query(DATEDIFF(m,0,GETDATE()))

will help you to take out the difference between the months from 0 to current date after that we will add a month to it which will make it next month after that we will subtract 1 sec from it and which will give us the last second of this month post that we will cast that into date, to get last day of this month.

3. First day of next month:

      SELECT DATEADD(mm, DATEDIFF(m,0,GETDATE())+1,0) ):

in this we have taken out the difference between the months from 0 to current date and then add 1 to the difference and 0 this will return the first day of next month.

In the similar logic we can extract:

4. Last day of next month:

      SELECT cast(DATEADD(s,-1,DATEADD(mm, DATEDIFF(m,0,GETDATE())+2,0)) as date)

5. First day of previous month:

      select DATEADD(mm, DATEDIFF(m,0,GETDATE())-1,0)

6. Last day of previous month:

      SELECT cast(DATEADD(s,-1,DATEADD(mm, DATEDIFF(m,0,GETDATE()),0)) as date)

7. First day of current year:

      Select DATEADD(yy, DATEDIFF(yy,0,GETDATE()),0): in this case we will extract the difference between the years and add

8. Last day of current year:

      SELECT cast(DATEADD(s,-1,DATEADD(yy, DATEDIFF(yy,0,GETDATE()),0)) as date)

Your Answer

Answer (1)

Ranjana

To obtain the first day of the next month, you start by getting the first day of the current month and then adding one month to it. Here's how you can do it:

Get the current date.

Set the day of the date to 1 to get the first day of the current month.

Add one month to the date.

Now you have the first day of the next month.

Here's a Python example using the datetime module:

python

Copy code

import datetime

# Get the current date

current_date = datetime.date.today()

# Set the day of the date to 1 to get the first day of the current month

first_day_of_current_month = datetime.date(current_date.year, current_date.month, 1)

# Add one month to the date

first_day_of_next_month = first_day_of_current_month.replace(month=first_day_of_current_month.month + 1)

print("First day of next month:", first_day_of_next_month)

This will output the first day of the next month based on the current date.

1 Month