## How do you find time intervals in SQL?

**1 Answer**

- Declare @Date_2 DATETIME = ‘2020-04-30 10:01:10.022’
- Declare @Date_1 DATETIME = ‘2020-04-30 10:00:00.000’
- 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.

## 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,**

- SELECT [date_created]
- FROM table.
- WHEREDATEPART(w,[date_created]) NOT IN (7)

## How many hours are in 2 hours?

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.