to be copy and pasted in e.g. derived tables. If the performance is poor ask your DBA to create a table in stead of using it in your derived table.
:o
trees.zip (15.0 KB)
TurningPointHolland 
(BOB member since 2006-09-06)
Approved and moved to BOB’s Downloads.
MichaelWelter 
(BOB member since 2002-08-08)