Experimenting with compatible types
As we covered in the slides, some data types are compatible with others, meaning they will implicitly convert to the proper type when used in an assignment or comparison clause. For example, if you compare an INTEGER and a VARCHAR, it will convert the INTEGER into a VARCHAR for the comparison.
Den här övningen är en del av kursen
Introduction to Redshift
Övningsinstruktioner
- Select
year_qtr,total_sales,percent_ecom, and finallypercent_change_year_ecomfromspectrumdb.ecommerce_sales. - Find where
percent_change_year_ecomis greater than 50 as a string.
Interaktiv övning med praktiskt arbete
Testa den här övningen genom att slutföra den här exempelkoden.
-- Select year_qtr, total_sales, percent_ecom, percent_change_year_ecom
SELECT year_qtr,
___,
percent_ecom,
___
FROM spectrumdb.ecommerce_sales
-- Find where percent_change_year_ecom is greater than 50
WHERE ___ > ___;