Which of the following are not valid subquery type:Single row subqueryAll are validMultiple column subqueryMultiple row subquery

All the options you provided are valid subquery types in SQL. They are:

1. Single Row Subquery: Returns only one row from the nested SELECT statement.
2. Multiple Row Subquery: Returns one or more rows from the nested SELECT statement.
3. Multiple Column Subquery: Returns one or more columns from t Knowee AI is a powerful AI-powered study tool designed to help you to solve study problem.