Which is not a group function in SQL?

Any SELECT statement not included in the GROUP function must be placed in a GROUP BY clause. These are AVG, COUNT, MAX, MIN, SUM, STDDEV and VARIANCE. You may also have tried a SELECT statement containing a GROUP BY clause.

Incorrect use of the GROUP BY command inAn error occurs. The GROUP BY command helps the user to display rows with a common field value on a specific single row. For example, a small CEO of a company wants to see the customers who used the service the most per hour in the last month. Another case could be when the academy superintendent wants students to use honor roll classes. In such cases, the user can issue a GROUP BY statement to see the results.

GROUP BY is used to limit the results to a value with combined aggregate functions. The GROUP BY command can be useful for displaying a selection of results. Typically . is used, which considers it important to work with the correct syntax when running a report.


If you encounter ORA-00923, you will definitely see an error message

What is meant by not a single group group function?

Oracle error message: “ORA-00937: not very good”Your group function with one group. Its meaning is actually: “A SELECT list cannot consider both a group function such as AVG, COUNT, MAX, MIN, SUM, STDDEV, or VARIANCE, as well as a single Lewis expression, unless the column’s individual words are contained in the GROUP BY – Clause.

ORA-00923: no unique group person function

The Oracle documentation gives a reason when a SELECT should be:

A list cannot be both a group function such as AVG, COUNT, MAX, MIN, SUM, STDDEV, or VARIANCE and a single Gleam expression if the manifest is aboutsingle column is not contained in the GROUP BY clause.< /p>

Which is used to prevent the error ORA-00937 Not a single group function?

For the search query to work, you must either remove the main function or column expression from the SELECT, or add a GROUP BY clause containing the column expression. Following this rule and ensuring that the query syntax is correct should prevent ORA-00937 from occurring in the future.

In other words, you tried to issue a SELECT statement that requires a GROUP clause that does not contain a GROUP clause. If most people use an aggregate function in your choice (e.g. query AVG, COUNT, MAX, MIN…), you should have a great group BY clause.


To fix the error, you can usually remove the resulting group function or column expression from the SELECT clause, or add a GROUP BY clause that can contain column expressions.

If you want to add a GROUP BY clause, be sure to include smile expressions and follow proper organization. Take the example of a short CEO who wants to sit down and review the list of employees who have worked the most hours in an organized department. The correct syntax for a GROUP BY clause would probably be:

SELECT department, MAX(hours) AS "most hours"



oracle error code 00937


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  • Remember, if clients use an aggregate function in your r In the recommended query, you must also have the GROUP BY clause. Can’t you refer to a non-aggregated column in a SELECT that is also named in the GROUP BY clause and no. For the query to be properly organized, you must either remove the group or function column expression with SELECT, or add an absolute GROUP BY clause containing that column expression.

    Following this rule and correct query syntax should reduce the chance of ORA-00937 being thrown in the long run. Although the process of fixing this error is not too difficult, if you are still having problems with ORA-00937, please contact your DBA or a trained Oracle consultant.