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DA0-002 · Question #109

A data analyst is evaluating all conditions in a query. Which of the following is the best logical function to accomplish this task?

The correct answer is C. AND. To ensure that all specified conditions in a query are met simultaneously for data retrieval or filtering, the AND logical function is the best choice.

Data Acquisition and Preparation

Question

A data analyst is evaluating all conditions in a query. Which of the following is the best logical function to accomplish this task?

Options

  • AOR
  • BNOT
  • CAND
  • DIF

How the community answered

(46 responses)
  • A
    7% (3)
  • B
    2% (1)
  • C
    89% (41)
  • D
    2% (1)

Why each option

To ensure that all specified conditions in a query are met simultaneously for data retrieval or filtering, the AND logical function is the best choice.

AOR

The OR logical operator returns a record if any of the specified conditions are true, which does not accomplish evaluating all conditions simultaneously.

BNOT

The NOT logical operator negates a condition, returning records where the condition is false, which is not for evaluating multiple conditions concurrently.

CANDCorrect

The AND logical operator is used to combine multiple conditions in a query (e.g., in a WHERE clause) such that a record is returned only if all specified conditions are true. This function is essential when an analyst needs to evaluate all conditions simultaneously to precisely filter data.

DIF

IF is a conditional function that returns one value if a condition is true and another if false, typically used for conditional logic within columns or expressions, not for combining multiple filtering conditions in a WHERE clause.

Concept tested: SQL logical operators, query filtering

Source: https://learn.microsoft.com/en-us/sql/t-sql/language-elements/and-transact-sql

Topics

#logical operators#SQL queries#query conditions#boolean logic

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