MySQL WHERE Clause Inequality Comparison Operators

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Just as you want to filter the rows of data returned in a SELECT query with the equality comparison operator (=), you can also create a conditional filter to test if 2 values are not equal to one another. Learn more in the following article.

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In MySQL, there are 2 ‘not equal to’ comparison operators available:

  • <>
  • !=

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Even though both of these comparison operators mean the same thing and work exactly the same, I will use the <> operator as it is supported by the SQL Standard and is used in other SQL dialects as well.

Typically, the inequality conditional comparison filter will look like this:

some_column <> some_value

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Josh Otwell has a passion to study and grow as a SQL Developer and blogger. Other favorite activities find him with his nose buried in a good book, article, or the Linux command line. Among those, he shares a love of tabletop RPG games, reading fantasy novels, and spending time with his wife and two daughters.

Disclaimer: The examples presented in this post are hypothetical ideas of how to achieve similar types of results. They are not the utmost best solution(s). The majority, if not all, of the examples provided, are performed on a personal development/learning workstation environment and should not be considered production quality or ready. Your particular goals and needs may vary. Use those practices that best benefit your needs and goals. Opinions are my own.

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