POSTGRESQL DATABASE INTERVIEW QUESTIONS

Course:PostgreSQL
Chapter:Chapter 7 - DQL (Data Query Language)
Questions Count:10
1

What is the purpose of the BETWEEN operator in PostgreSQL?

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2

Can the BETWEEN operator be used with text data types in PostgreSQL?

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3

How does the BETWEEN operator handle NULL values in PostgreSQL?

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4

Explain the difference between the BETWEEN operator and using AND with >= and <= in PostgreSQL.

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5

What are some potential pitfalls when using the BETWEEN operator with date ranges in PostgreSQL?

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6

How does the BETWEEN operator in PostgreSQL handle exclusive ranges?

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7

Can the BETWEEN operator be optimized using indexes in PostgreSQL? How does this compare to ORACLE?

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8

Discuss a scenario where the BETWEEN operator might lead to inefficient query performance in PostgreSQL and how to address it.

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9

How can you use the BETWEEN operator with subqueries in PostgreSQL? Provide a conceptual example without code.

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10

In a PostgreSQL certification exam, you are asked to explain how the BETWEEN operator can be combined with window functions for advanced data analysis. Describe the process.

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