With the UNION clause, each query involved must output the same number – McqOptions

MCQOPTIONS

1.	With the UNION clause, each query involved must output the same number of columns, and they must be UNION compatible.~!
A.	True
B.	False
Answer» B. False

Discussion

No Comment Found

Related MCQs

With the UNION clause, each query involved must output the same number of columns, and they must be UNION compatible.~!
A function returns one value and has only output parameters.~!
A correlated subquery is where the outer query depends on data from the inner query.~!
Outer join is the same as equi-join, except one of the duplicate columns is eliminated in the result table.~!
The code to create triggers and routines is stored in only one location and is administered centrally.%!
The most frequently used relational operation, which brings together data from two or more related tables into one resultant table, is called an equi-join.%!
Subqueries can be nested multiple times.%!
ROLLBACK WORK asks SQL to empty the log file.%!
There should be one condition within the WHERE clause for each pair of tables being joined.%!
The UNION clause is used to combine the output from multiple queries together into a single result table.%!