If you want to count something inside a group (something the same as auto_increment from mysql), you can use row_number
OVER (PARTITION BY ur_prnt_uid_id ORDER BY ur_chld_uid_id)
JRE 1.8.0_144 Certified with Oracle EBS 12.1 and 12.2 - Java Runtime Environment 1.8.0_144 (a.k.a. JRE 8u144) and later updates on the JRE 8 codeline are now certified with Oracle E-Business Suite 12.1 and 12.2 ...
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