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UUIDRandom

Creates a universally unique identifier suitable for use as a primary key in FileMaker number fields.

  Average rating: 4.4 (43 votes) Log in to vote

Jeremy Bante https://github.com/jbante/

  Function definition: (Copy & paste into FileMaker's Edit Custom Function window)

/** * ====================================== * UUIDRandom * https://github.com/jbante/FileMaker-Techniques/blob/master/CustomFunctions/UUID/UUIDRandom.fmfn * * PURPOSE: * Creates a numeric universally unique identifier suitable for use as a * primary key in FileMaker number fields. The UUID is composed almost * entirely of random digits. This may be useful in some situations to * preserve the anonymity of the conditions that generated the UUID. The * values returned by this and related functions have a one-to-one * correspondence with UUIDs following the RFC 4122 standard - all values * in the format generated by this function can be converted to RFC 4122, * and vice versa. * * RETURNS: * A 41-digit delimited number of the form: * v-r-nnnnnnnnnnnn-nnnnnnn-nnnnn-nnnnnnnnnnnnnnn * The sections of the UUID correspond to: * v: A UUID version (type) number * r: A variant code reserved by the RFC 4122 standard * n: Random digits, within certain bounds for compatibility with RFC 4122 * * PARAMETERS: none * * DEPENDENCIES: none * * NOTES: * For most practical purposes, FileMaker will ignore the text delimiters * in values returned by this function. * * These functions generates UUIDs that are meaningfully sortable. Values * sort by version, then creation order, then node (creation device). * * This function creates a (decimal) numeric UUID, which has performance * advantages for file size and find speed in FileMaker. The value can be * converted to RFC 4122 canonical form (hexadecimal) with the * UUIDGetAsRFC4122 function. * * HISTORY: * MODIFIED on 2011-02-02 by Jeremy Bante to use a format with a bijective * relationship with the RFC 4122 format. * CREATED on 2010-12-02 by Jeremy Bante <http://scr.im/jbante>. * * REFERENCES: * Key values Best Practice: http://filemakerstandards.org/pages/viewpage.action?pageId=557138 * RFC 4122 standard UUID specification: http://tools.ietf.org/html/rfc4122 * UUID functions: https://github.com/jbante/FileMaker-Techniques/tree/master/CustomFunctions/UUID * ====================================== */ //v-r-mmm mmm mmm mmmTsss ssss-ccccc@nnnnn nnnnn nnnnn "42" //version and reserved variant code // "4-2-" & Right ( "000000000000" & Floor ( Random * 165208454460 ) ; 12 ) // & "-" & Right ( Random ; 7 ) // & "-" & Right ( "00000" & Floor ( Random * 16384 ) ; 5 ) // & "-" & Right ( "000000000000000" & Floor ( Random * 281474976710656 ) ; 15 ) Click to copy

Creates a numeric universally unique identifier suitable for use as a primary key in FileMaker number fields. The UUID is composed almost entirely of random digits. This may be useful in some situations to preserve the anonymity of the conditions that generated the UUID. The values returned by this and related functions have a one-to-one correspondence with UUIDs following the RFC 4122 standard - all values in the format generated by this function can be converted to RFC 4122 canonical form, and visa-versa.

For most practical purposes, FileMaker will ignore the text delimiters in values returned by this function.

These functions generates UUIDs that are meaningfully sortable. Values sort by version, then creation order, then node (creation device).

This function creates a (decimal) numeric UUID, which has performance advantages for file size and find speed in FileMaker. The value can be converted to RFC 4122 canonical form (hexadecimal) with the UUIDGetAsRFC4122 function.

 

Comments

		Amy gill, Nuneaton Dec 25, 2011
I wonder how I could recreate h in FileMaker pro 11? Thanks Amy

		Brian Ginn, Louisville Jun 13, 2012
I really enjoy this cf. Thank you Jeremy for creating and sharing it.

		David Sep 16, 2012
Thank you!

		Reinier, Rotterdam Nov 4, 2012
Thanks!

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