How to use REGEXP_SUBSTR to extract owner/obj/part from full obj name ?

owner[.object_name[.partition_name]]

This naming allows to define schemans, objects and partitions.

I have a sp_crackname procedure to extract fields form this name but i think it is running slow when processign thousands of names.

I need to use REGEXP_SUBSTR to extract indivvidual fields.

Ex -1 :
objname = 'busdep'
REGEXP_SUBSTR (... , 1) should return 1. field which is 'busdep'

REGEXP_SUBSTR (... , 2) and REGEXP_SUBSTR (... , 3) should return NULL. Ex -1 :
objname = 'busdep.orders.part_1'
REGEXP_SUBSTR (... , 1) should return 'busdep'

REGEXP_SUBSTR (... , 2) should return 'orders' and REGEXP_SUBSTR (... , 3) should return 'part_1'

Please let me know whats the fastest way to do this. Received on Thu Feb 04 2010 - 14:47:51 CST