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.
Este exercício faz parte do curso
Introduction to Redshift
Instruções do exercício
- 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.
Exercício interativo prático
Experimente este exercício completando este código de exemplo.
-- 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 ___ > ___;