How to diagnose and fix the 22014 invalid_argument_for_ntile_function error code in Postgres.

The 22014 error code in PostgreSQL refers to invalid_argument_for_ntile_function. This error occurs when you use the NTILE function with an incorrect argument. The NTILE function is used to divide the result set into a specified number of approximately equal buckets. The common cause for this error is providing a non-positive integer as the argument to the NTILE function.

To diagnose this, check the argument you are passing to NTILE. It should be a positive integer, which represents the number of buckets you want to divide your result set into.

Here’s an example that would cause the 22014 error:

SELECT NTILE(0) OVER (ORDER BY column_name) FROM table_name;

The above query will result in an invalid_argument_for_ntile_function error because 0 is not a valid argument for NTILE.

To fix this issue, you should ensure that the argument for NTILE is a positive integer greater than zero. Here’s a corrected example:

SELECT NTILE(4) OVER (ORDER BY column_name) FROM table_name;

In this example, the result set will be divided into 4 buckets, which is a valid usage of the NTILE function.

For more detailed information on PostgreSQL error codes, you can refer to the official PostgreSQL documentation on error codes, which lists 22014 under the Class 22 — Data Exception section.

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