MySQL 8.0.19 introduced the VALUES DML statement, which is a table constructor that can be used as a stand alone SQL statement.
This is not to be confused with the VALUES keyword that’s used with the INSERT or REPLACE statements when inserting data (although it can be used for that purpose too). It also shouldn’t be confused with the VALUES() function that’s used with INSERT … ON DUPLICATE KEY UPDATE statements.
If you’re getting error number 4123 that reads “Window element in OVER clause can not also be specified in WINDOW clause” in SQL Server, it’s probably because you’re referring to a named window with the same clause that’s in the named window.
When we use the OVER clause to refer to a named window in SQL Server, we can’t include a clause that’s also present in the named window.
To fix the issue, remove one of the clauses – either the one in the OVER clause or the one in the named window.
When we use SQL Server’s GENERATE_SERIES() function to create a series, we provide the start and stop points as numbers. And if we provide the optional step argument, then it’s provided as a number too.
The numbers we provide can be decimal fractions if required. This means that we can create a series made up of decimal fractions. But we still need to ensure that all our arguments are of the same type.
Continue readingIf you’re getting error 8144 with a message that reads “Procedure or function GENERATE_SERIES has too many arguments specified” in SQL Server, it’s because you’re passing too many arguments to the GENERATE_SERIES() function.
The GENERATE_SERIES() function/relational operator accepts a minimum of two arguments, and a maximum of three (at least, this is the case at the time of writing).
So to fix this error, be sure to provide either two arguments or three when using the GENERATE_SERIES() function.
If you’re getting SQL Server error msg 9837 that tells you “The date value is less than the minimum date value allowed for the data type…”, it sounds like you’re using the DATETRUNC() function with the week date part on a date that would cause the result to backtrack to a date that’s earlier than the date type supports.
This is a rare error that only occurs when using the week date part with the DATETRUNC() function on a very small number of early dates.
One way to deal with this error would be to use iso_week instead of week, if that’s suitable for your particular situation.
The introduction of the LEAST() and GREATEST() functions in SQL Server 2022 were a welcome addition. These functions enable us to get the minimum or maximum value from a list of values. There are plenty of use cases for these functions.
One such use case is to provide a cap on the values returned by a query.
Continue readingIf you’re getting SQL Server error 402 that reads something like “The data types numeric and numeric are incompatible in the approx_percentile_disc operator“, it’s probably because you’re trying to use the APPROX_PERCENTILE_DISC() function on a column of the wrong data type.
It could be that you’ve simply passed the wrong column, or it could be that the column is the correct one, but it’s of the wrong type.
To fix, be sure that the column/expression is of a supported type.
Continue readingIf you’re getting an error that reads “The function ‘FIRST_VALUE’ must have an OVER clause” in SQL Server, it’s probably because you’re calling the FIRST_VALUE() function without an OVER clause.
The FIRST_VALUE() 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 FIRST_VALUE() function.
When using the APPROX_PERCENTILE_DISC() function in SQL Server, you may get an error that reads “The function ‘APPROX_PERCENTILE_DISC’ must have a WITHIN GROUP clause“. If you get this error, it’s because you omitted the WITHIN GROUP clause when using the APPROX_PERCENTILE_DISC() function.
To fix this issue, make sure you include the WITHIN GROUP clause whenever you use the APPROX_PERCENTILE_DISC() function.
If you’re using SQL Server’s GENERATE_SERIES() function/relational operator and you’re getting an empty result set, then it could be due to one of the following reasons.