I don't know why it doesn't work

Question

Complete to extract information about the records that have an id different from 1

SELECT *
FROM orders
WHERE customer_id != 1

Answer 1

Check the spellings of table name and column name again.. Put a semicolon after the statement.
It not work then may be it's a bug so then report it by [e-mail] along with screen shots.

Answer 2

It may be that the brand of SQL does not accept != for not equal. Instead, use <>.

Answer 3

SELECT * FROM orders
WHERE customer_id <> 1