# How do I calculate hours between two time in SQL?

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## How do you find time intervals in SQL?

1. Declare @Date_2 DATETIME = ‘2020-04-30 10:01:10.022’
2. Declare @Date_1 DATETIME = ‘2020-04-30 10:00:00.000’
3. Select CONVERT (TIME, @Date_2 – @Date_1) as Elapsed_Time.

## How calculate working hours in SQL Server?

Each day has 8 business hours. I calculate total number of hours between two dates, then subtract the number of midnights multiplied by 16 non-business hours per day, then subtract the number of weekends multiplied by 16 (8+8 business hours for Sat+Sun).

## How do I calculate hours between two dates?

To calculate the number of hours between two dates we can simply subtract the two values and multiply by 24. This returns a decimal value though.

## What is the data type for time in SQL?

Date and Time data types

Data type Format Accuracy
time hh:mm:ss[.nnnnnnn] 100 nanoseconds
date YYYY-MM-DD 1 day
smalldatetime YYYY-MM-DD hh:mm:ss 1 minute
datetime YYYY-MM-DD hh:mm:ss[.nnn] 0.00333 second

## How do I find the difference between two dates and minutes in SQL?

select datediff(minute,LastDate,getdate()) as “Minutes”, datediff(hour,LastDate,getdate()) as “Hours”from emp.

## Where is weekday in SQL query?

The DAYOFWEEK() function returns the weekday index for a given date (a number from 1 to 7). Note: 1=Sunday, 2=Monday, 3=Tuesday, 4=Wednesday, 5=Thursday, 6=Friday, 7=Saturday.

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## How do I select weekday in SQL?

The WEEKDAY() function returns the weekday number for a given date. Note: 0 = Monday, 1 = Tuesday, 2 = Wednesday, 3 = Thursday, 4 = Friday, 5 = Saturday, 6 = Sunday.

## How do you exclude weekends in SQL query?

For that we need to write the SQL query as shown below: SELECT * FROM CheckInDetails. WHERE ((DATEPART(dw, CheckInDate) + @@DATEFIRST) % 7) NOT IN (0, 1)

If you want to only exclude Sunday and it is not the first day of the week for your server,

1. SELECT [date_created]
2. FROM table.
3. WHEREDATEPART(w,[date_created]) NOT IN (7)

Using Minutes

HOURS MINUTES
2 hours 120
3 hours 180
4 hours 240
5 hours 300

## How many minutes are a day?

There are 24*60 minutes in a day (ignoring the imperfections of the natural world, the Earth and Sun). So there are 24*60 valid 24 hour times (excluding seconds) on a digital clock. 