How to Get the First Day of Every Month in SQL Server

Learn the SQL Server query to retrieve the first day of each month using DATEADD and DATEDIFF functions efficiently.

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To get the 1st of every month in SQL, you can use the `DATEADD` and `DATEDIFF` functions together. Here's an example for SQL Server: `SELECT DATEADD(month, DATEDIFF(month, 0, GETDATE()), 0) as FirstOfMonth`. This code computes the first day of the current month by finding the difference in months between a fixed date and the current date, then adds this difference in months back to the fixed date. Replace `GETDATE()` with your desired date column to find the first day for each month in your data.

FAQs & Answers

  1. How do you find the first day of the current month in SQL Server? Use the query: SELECT DATEADD(month, DATEDIFF(month, 0, GETDATE()), 0) which returns the first day of the current month.
  2. Can this method be used to get the first day for any given date in SQL? Yes, replace GETDATE() with any date column or value to get the first day of that specific month.
  3. What is the role of DATEADD and DATEDIFF in getting the first day of the month? DATEDIFF calculates the number of months between a base date and the given date, and DATEADD adds that many months back to the base date, resulting in the first day of the month.

Watch More

For more SQL date manipulation tips, check out our tutorials on extracting last day of the month, date range filtering, and advanced date calculations to enhance your database querying skills.

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