What is a subquery in an sql select statement

Assignment Help Basic Computer Science

Reference no: EM131269929

1. How do you construct a Join operation in an SQL SELECT statement?

2. What is a subquery in an SQL SELECT statement?

3. Describe the circumstances in which a subquery must be used.

4. What is a relational query optimizer? Why are they important?

Reference no: EM131269929

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What is a subquery in an sql select statement : How do you construct a Join operation in an SQL SELECT statement?

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