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Questions and Answers
What type of join is formed when all rows in the first table are joined to all rows in the second table?
What type of join is formed when all rows in the first table are joined to all rows in the second table?
- Inner join
- Left outer join
- Full outer join (correct)
- Right outer join
What type of join is formed when a join condition is omitted?
What type of join is formed when a join condition is omitted?
- Right outer join
- Inner join
- Cartesian product (correct)
- Left outer join
What does the CROSS JOIN clause produce between two tables?
What does the CROSS JOIN clause produce between two tables?
- Natural join
- Equijoin
- Non-equijoin
- Cartesian product (correct)
When using full outer joins, how many rows would be included if there are 20 rows in the first table and 8 rows in the second table?
When using full outer joins, how many rows would be included if there are 20 rows in the first table and 8 rows in the second table?
Which type of join combines rows from both tables whether or not there is a match?
Which type of join combines rows from both tables whether or not there is a match?
What data type will the returned values have if one query selects CHAR and the other query selects VARCHAR2?
What data type will the returned values have if one query selects CHAR and the other query selects VARCHAR2?
In the context of the text, what is the purpose of using the UNION operator in SQL?
In the context of the text, what is the purpose of using the UNION operator in SQL?
What is the significance of the COLUMN a_dummy NOPRINT command in the provided SQL statement?
What is the significance of the COLUMN a_dummy NOPRINT command in the provided SQL statement?
How many queries are compiled together when using SET Operators according to the text?
How many queries are compiled together when using SET Operators according to the text?
Which of the following is NOT an operator used as a SET Operator according to the text?
Which of the following is NOT an operator used as a SET Operator according to the text?
