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Databases Reporting with SQL Working with Text Changing Cases of Strings

Posted by Ash Mitchell
Ash Mitchell
6,034 Points

Why do we not use 'SELECT FROM' in this query case?

I have done some research and have found the answer to be "SELECT LOWER(title) AS lower_case_title, UPPER(author) AS upper_case_author FROM books;"

But I'm confused to why in other circumstances with SQL we have always said 'SELECT *' or 'SELECT title FROM books' etc to get column and or value information.

Is this because we are editting the results by using UPPER and LOWER to modify information from the table?

1 Answer

Christian Aschenbrenner
Christian Aschenbrenner
1,787 Points

SELECT * FROM books; Return all columns in the books table.

SELECT title FROM books; Returns the column title from the books table.

SELECT LOWER(title) AS lower_case_title, UPPER(author) AS upper_case_author FROM books; Returns the column title shown as lower_case_title with the results in lower case and the column author shown as upper_case_author with the results in upper case from the books table.