SQL ALTER DROP query not working -


i learning sql online w3school.com.

for droping column
alter table table_name drop column column_name command given in sql alter page

i tried in try yourself section provided w3school.
it's not working

i used 

alter table customers drop column city;

i try query on compile online/sql.
again it's not working.

so, can 1 explain me wrong.

did notice says in brackets?

to delete column in table, use following syntax (notice database systems don't allow deleting column)

see answers these questions:

websql drop column javascript

how delete or add column in sqlite?

w3schools uses websql. try sqlfiddle instead.


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