What is the default port of MySQL server

Which of these is not a valid name for a column

Which of the following is not a valid SQL data type?

If no database has been selected, specifying a database qualifier is necessary. 

 Which “text type” has the maximum number of bytes?
 

  Which of these operators perform similar operations like ALL and ANY? 

The default format for “Date” data type is

What is def in the following statement?

DECLARE abc HANDLER FOR def ghi;

Which SQL keyword is used to select only different/unique values from a table and avoid duplicates?

To perform a delete on a single-table, how is the name of a column qualified?