SQL - Part 20 - lower() MySQL String Function

Thankyou sir❤️🔥

Sir how to covert all the columns into upper or lowercase with using the * it is showing the error
Shoule we write all the column name...????

upper and lower r not working at all, sometimes the errors r different depending if upper or lower

So, lower function is an aggregate function, right?

Sir why u are not adding single quote to country word
Even that is a text
In the previous example u added single quote for Arun motoori ?