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|-
| '''Summary'''
|Returns the ''id'' values of all the nodes supplied by {{Code|$nodes}} of the database specified by the , which must all be [[#Database Nodes|database nodenodes]] {{Code|$db}}.<br/>Each database node has a persistent ''id'', which remains valid after update operations. If so far no updates are have been performed, the ''pre'' value is equal to the ''id'' value and can be requestedinstead, which provides access to database nodes in constant time.|-| '''Errors'''|{{Error|BXDB0001|#Errors}} contains a node which is not a [[#Database Nodes|database node]].
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