When using window functions such as RANK() in SQL Server, we must provide an OVER clause clause with an ORDER BY clause.
If you’re getting an error that reads “The function ‘RANK’ must have an OVER clause with ORDER BY”, it’s probably because you’re including an OVER clause with the RANK() function (as is required), but you’re omitting the ORDER BY clause.
To fix this error, add an ORDER BY clause to the OVER clause.
If you’re getting an error in PostgreSQL that reads something like “function lag(numeric, numeric) does not exist“, it could be because your second argument is the wrong data type.
The second argument to the lag() function is optional, but if it’s provided, it must be an integer.
So to fix this issue, make sure the second argument is an integer. Alternatively, you can omit the second argument altogether if you’re happy to use the default value of 1.
If you’re getting SQL Server error 10753 that reads “The function ‘LEAD’ must have an OVER clause”, it’s probably because you’re calling the LEAD() function without an OVER clause.
The LEAD() function requires an OVER clause (and that clause must have an ORDER BY clause).
To fix this issue, be sure to include an OVER clause when calling the LEAD() function.
If you’re using SQL Server’s APPROX_PERCENTILE_DISC() function, and you’re getting error 10751 that reads “The ORDER BY in WITHIN GROUP clause of ‘APPROX_PERCENTILE_DISC’ function must have exactly one expression“, it’s probably because you’re passing too many ORDER BY expressions.
The APPROX_PERCENTILE_DISC() function accepts just one ORDER BY expression in its WITHIN GROUP clause.
To fix, be sure to use just one ORDER BY expression in the WITHIN GROUP clause when using the APPROX_PERCENTILE_DISC() function.
If you’re getting an error message that reads “The function ‘PERCENT_RANK’ must have an OVER clause with ORDER BY” in SQL Server, it’s probably because you’ve omitted the ORDER BY clause from the OVER clause when using the PERCENT_RANK() function.
The PERCENT_RANK() function requires an OVER clause that contains an ORDER BY clause. This error happens when we include the OVER clause but not the ORDER BY clause.
To fix this error, add an ORDER BY clause to the OVER clause.
If you’re getting an error in SQL Server that reads “The least function requires 1 to 254 arguments“, it’s probably because you’re either passing too few or too many arguments to the LEAST() function.
As the error message states, the LEAST() function requires at least 1 argument, and no more than 254 arguments.
To fix this issue, be sure to pass at least 1 argument, and no more than 254 arguments when using the LEAST() function.
If you’re getting an error that reads “ERROR: argument of ntile must be greater than zero” in PostgreSQL, it’s probably because you’re calling the ntile() function with a non-positive integer.
This error occurs when we pass a non-positive integer to the ntile() function.
To fix this issue, be sure to pass a positive integer to the function.
Continue readingIf you’re getting a PostgreSQL error that reads “SELECT DISTINCT ON expressions must match initial ORDER BY expressions” when trying to run a query, it’s probably because the initial columns provided to your ORDER BY clause are different to the ones provided to the DISTINCT ON clause.
To fix this error, make sure the initial columns provided to the ORDER BY clause are included in the DISTINCT ON clause.
If you’re getting error message 4112 that reads “The function ‘FIRST_VALUE’ must have an OVER clause with ORDER BY” when using the FIRST_VALUE() function, it’s probably because you’re omitting the ORDER BY clause from the OVER clause.
In SQL Server, the FIRST_VALUE() function requires an OVER clause that contains an ORDER BY clause. This error happens when we provide the OVER clause but not the ORDER BY clause.
To fix this error, simply add an ORDER BY clause to the OVER clause.
If you’re getting an error that reads “A TOP can not be used in the same query or sub-query as a OFFSET” when running a query in SQL Server, it’s probably because you’re using the TOP() clause and the OFFSET clause in the same query or sub-query.
We can’t use the TOP() clause and the OFFSET clause in the same query in SQL Server.
Below are three options for fixing this error.
Continue reading