Broken in to `Standards Reference Information`

[KES777]

https://metacpan.org/pod/DBI#Standards-Reference-Information

A hyperlinked, browsable version of the BNF syntax for SQL92 (plus Oracle 7 SQL and PL/SQL) is available here: http://cui.unige.ch/db-research/Enseignement/analyseinfo/SQL92/BNFindex.html