ISO/IEC-19075-1 Complete Document History
Information technology - Guidance for the use of database language SQL - Part 1: XQuery regular expressions

Complete Current Edition:
   2ND EDITION - Part 1: XQuery regular expressions - Aug. 1, 2021

Obsolete Revision Information:
   2011 EDITION - Part 1: XQuery Regular Expression Support in SQL - July 15, 2011