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| '''Summary'''
|Returns the ''pre'' values of the specified {{Code|$nodes}}, which must all be {{Function|[[#DatabaseNodes|Database Nodes}}database nodes]].<br/>The [[Node Storage#PRE Value|PRE value]] provides very fast access to an existing database node, but it will change whenever a node with a smaller ''pre'' values is added to or deleted from a database.
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| '''Errors'''
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| '''Summary'''
|Returns the ''id'' values of the specified {{Code|$nodes}}, which must all be {{Function|[[#DatabaseNodes|Database Nodes}}database nodes]].<br/>Each database node has a ''persistent'' [[Node Storage#ID Value|ID value]]. Access to the node id can be sped up by turning on the {{Option|UPDINDEX}} option.
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| '''Errors'''
=Updates=
All functions in this section are {{Function|Database[[#Updating Functions|Updating Functions}}]].
==db:create==
* Added: {{Function||db:export}}, {{Function||db:name}}, {{Function||db:path}}
* Updated: {{Code|$options}} argument added to {{Function||db:create}} and {{Function||db:optimize}}.
* Updated: the functions no longer accept {{Function|[[#DatabaseNodes|Database Nodes}} database nodes]] as reference. Instead, the name of a database must now be specified.
;Version 7.6
