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Some of our poor delegates don't have the luxury of a home computer to install SQL on (even worse some have made bad life choices and picked a Mac). The good news is that you can still practise your SQL skills in your web browser, using the impressive SQL Fiddle site. Have no fear, SQL Fiddle is here, a browser based sandbox to bring you cheer!
- Installing and configuring SQL Fiddle
- SQL Fiddle Exercise 1 - SELECT
- SQL Fiddle Exercise 2 - Order By
- SQL Fiddle Exercise 3 - Numeric Filters
- SQL Fiddle Exercise 4 - Date Filter
- SQL Fiddle Exercise 5 - Text Filters
- SQL Fiddle Exercise 6 - Cast or Convert Functions
- SQL Fiddle Exercise 7 - Conditional Function
- SQL Fiddle Exercise 8 - Counting Words
- SQL Fiddle Exercise 9 - Formatted Dates
- SQL Fiddle Exercise 10 - Date Calculations (this blog)
- SQL Fiddle Exercise 11 - Inner Join
- SQL Fiddle Exercise 12 - Outer Join
- SQL Fiddle Exercise 13 - Grouping Data
- SQL Fiddle Exercise 14 - Having
- SQL Fiddle Exercise 15 - All together now!
Posted by Sam Lowrie on 01 July 2021
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SQL Fiddle Exercise 10 - Date Calculations
Calculate the number of days which have elapsed between the date of each sales and today's date.
Remember the function to return today's date is GETDATE(). Your result will vary based on the date when you run your query!
Now filter this to only include events that happened within the last 6 months. Use DataAdd() with Between to achieve this.
For the data of 21st June 2021 this returns 20 rows (feel free to substitute GETDATE() with this date to test your query).
See the answer here.
- Installing and configuring SQL Fiddle
- SQL Fiddle Exercise 1 - SELECT
- SQL Fiddle Exercise 2 - Order By
- SQL Fiddle Exercise 3 - Numeric Filters
- SQL Fiddle Exercise 4 - Date Filter
- SQL Fiddle Exercise 5 - Text Filters
- SQL Fiddle Exercise 6 - Cast or Convert Functions
- SQL Fiddle Exercise 7 - Conditional Function
- SQL Fiddle Exercise 8 - Counting Words
- SQL Fiddle Exercise 9 - Formatted Dates
- SQL Fiddle Exercise 10 - Date Calculations (this blog)
- SQL Fiddle Exercise 11 - Inner Join
- SQL Fiddle Exercise 12 - Outer Join
- SQL Fiddle Exercise 13 - Grouping Data
- SQL Fiddle Exercise 14 - Having
- SQL Fiddle Exercise 15 - All together now!