In SQL, which operator is used to check if a value is not equal to a specified value?OptionsNOT!==<>

Break Down the Problem

1. We need to identify the SQL operator used to indicate "not equal to" for comparisons.
2. We are given multiple options: NOT, !=, and <>.

Relevant Concepts

1. In SQL, comparison operators allow us to evaluate expressions. The "not equal to" operator is essential in filtering results based on a condition.
2. Commonly used operators for inequality in SQL include:
   • != : This operator is used in some SQL dialects to indicate "not equal to".
   • <> : This is the standard SQL operator for "not equal to".

Analysis and Detail

1. NOT: This is a logical operator that negates the result of a condition but is not specifically used for "not equal to".
2. !=: This operator is used in some SQL environments like MySQL but is not universally supported across all SQL databases.
3. <>: As per SQL standards, this is the widely accepted operator for representing "not equal to". It is supported across all major SQL databases.

Verify and Summarize

Based on the analysis:

• The correct answer is not "NOT" because it does not represent "not equal to".
• While "!=" can be valid in certain databases, "<>" is universally recognized as the standard operator to use in SQL for "not equal to".

Final Answer

The correct operator to check if a value is not equal to a specified value in SQL is <>.