Database - Advanced SQL
Exercise : Advanced SQL - True or False
- Advanced SQL - General Questions
- Advanced SQL - True or False
Outer join is the same as equi-join, except one of the duplicate columns is eliminated in the result table.
A correlated subquery is where the outer query depends on data from the inner query.
A function returns one value and has only output parameters.
With the UNION clause, each query involved must output the same number of columns, and they must be UNION compatible.