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.
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)- A7% (3)
- B2% (1)
- C89% (41)
- D2% (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.
The OR logical operator returns a record if any of the specified conditions are true, which does not accomplish evaluating all conditions simultaneously.
The NOT logical operator negates a condition, returning records where the condition is false, which is not for evaluating multiple conditions concurrently.
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.
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
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