How to fix not a GROUP BY expression?

How do you get not a GROUP BY expression?

• Option 1. Add the city column to GROUP BY . If you want the city to be displayed in the output, you'll need to group the data by both state and city .
• Option 2. Remove the city column from SELECT . ...
• Option 3. Call the city column in an aggregate function.
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Does SQL use <> or !=?

Introduction to Comparison Operators ), greater than ( > ), and less than ( < ), among others. Notably, SQL provides two symbols for denoting inequality: <> and != , both serving the same purpose but with <> being the preferred choice for adhering to ISO standards. Lees verder »

Can you use the having clause without the GROUP BY clause?

If you use a HAVING clause without a GROUP BY clause, the HAVING condition applies to all rows that satisfy the search condition. In other words, all rows that satisfy the search condition make up a single group. Lees verder »