Re: [Hsqldb-developers] custom aggregate function

[fredt]

Title: HSQLDB Help Needed

Hi Steve,   This is supported in 1.8.0, alongside 3 other statistical aggregate functions. See the Syntax section of the Guide. The core class for these functions is SetFunction.   Fred  ----- Original Message ----- From: Stephen Ince To: hsqldb-developers@lists.sourceforge.net Sent: 27 June 2005 19:16 Subject: [Hsqldb-developers] custom aggregate function Hi,    I would like to write a stddev function for hqldb. I see that it is possible to write a custom function for a single value. What about a custom aggregate function?  I did look at http://hsqldb.sourceforge.net/doc/guide/ch08.html#stored-section.   Example usage. select stddev(salary) from employee.       Steve