To calculate the difference between two dates in the same column, we use the createdDate column of the registration table and apply the DATEDIFF function on that column. To find the difference between two dates in the same column, we need two dates from the same column.

## How do I count days between two dates in SQL?

**Use the DATEDIFF() function** to retrieve the number of days between two dates in a MySQL database. This function takes two arguments: The end date. (In our example, it’s the expiration_date column.)

## How can I compare two dates in SQL query?

**1 Answer**

- We can compare two dates using equals to, less than, and greater than operators in SQL. …
- If you want to find the employees joined on April 28
^{th}, 2020 from employee table: - You can use the less than and greater than operators in a similar way.

## How do you calculate dates between two dates?

**Just subtract one date from the other**. For example if cell A2 has an invoice date in it of 1/1/2015 and cell B2 has a date paid of 1/30/2015, then you could enter use the formula =B2-A2 to get the number of days between the two dates, or 29.

## Can you subtract dates in SQL?

The **DATEADD function** simply allows you to add or subtract the specified number of units of time to a specified date/time value.

## How do I get today in SQL?

To get the current date and time in SQL Server, **use the GETDATE() function**. This function returns a datetime data type; in other words, it contains both the date and the time, e.g. 2019-08-20 10:22:34 .

## How do you match years in SQL?

SELECT date_part(‘year’, created_at) AS year, This part of the query selects the ‘year’ (date part) from the timestamp (date/time info) values found in the column called “created_at” and puts it in a new column called “year”.

## How do I cast a date in SQL?

**How to get different date formats in SQL Server**

- Use the SELECT statement with CONVERT function and date format option for the date values needed.
- To get YYYY-MM-DD use this T-SQL syntax SELECT CONVERT(varchar, getdate(), 23)
- To get MM/DD/YY use this T-SQL syntax SELECT CONVERT(varchar, getdate(), 1)

## How do you condition a date in SQL?

Always make the start date a datetime and use zero time on the day you want, and **make the condition “>=”**. Always make the end date the zero time on the day after you want and use “<“. Doing that, you will always include any dates properly, regardless of the time portion of the date.

## Why is Datedif not in Excel?

DATEDIF is **not a standard function** and hence not part of functions library and so no documentation. Microsoft doesn’t promote to use this function as it gives incorrect results in few circumstances. But if you know the arguments, you may use it and it will work and in most of the cases will give correct results.

## How do I calculate the difference between two dates and times in Excel?

**Calculate elapsed time between two dates and times**

- Type two full dates and times. In one cell, type a full start date/time. …
- Set the 3/14/12 1:30 PM format. Select both cells, and then press CTRL + 1 (or. …
- Subtract the two. In another cell, subtract the start date/time from the end date/time. …
- Set the [h]:mm format.

## How do you calculate months between two dates?

To find the number of months or days between two dates, type into a new cell: **=DATEDIF(A1,B1,”M”) for months** or =DATEDIF(A1,B1,”D”) for days.

## How do I get 30 days old data in SQL?

SELECT *** FROM product WHERE pdate >= DATEADD(day, -30, getdate())**.

## How can I get 30 days before a date in SQL?

**“adding 30 days to sql date” Code Answer**

- SELECT GETDATE() ‘Today’, DATEADD(day,-2,GETDATE()) ‘Today – 2 Days’
- SELECT GETDATE() ‘Today’, DATEADD(dd,-2,GETDATE()) ‘Today – 2 Days’
- SELECT GETDATE() ‘Today’, DATEADD(d,-2,GETDATE()) ‘Today – 2 Days’

## How do you subtract 30 days in SQL?

To subtract 30 days from current datetime, first we need to get the information about current date time, then **use the now() method from MySQL**. The now() gives the current date time. The method to be used for this is DATE_SUB() from MySQL. Here is the syntax to subtract 30 days from current datetime.