Web development quizzes

LEFT JOIN returns all rows when there is at least one match in BOTH tables
False
True

There are different versions of the SQL language.
False
True

UNIQUE and NOT NULL are contraints.
False
True

This query copies data from table2 to table1: INSERT INTO table2 SELECT * FROM table1;
False
True

This query returns all the columns from the table Employee: SELECT + FROM Employee
False
True