pcsoft.us.windevCopyright 2026, PC SOFT5 Sep 2015 09:32:00 Z4 Sep 2015 21:13:00 ZIs it possible to have a unique key(not primary) that doesn't accept duplicates, but does accept unlimited NULL values? If so, how?30WEBDEVen_UShttps://forum.pcsoft.fr/es-ES/pcsoft.us.windev/53892-wd20-unique-key-duplicates-null/read.awpmoderateur@pcsoft.fr (El moderador)webmaster@pcsoft.fr (El webmaster)guestpcsoft.us.windevhttps://forum.pcsoft.fr/es-ES/pcsoft.us.windev/53892-wd20-unique-key-duplicates-null-53900/read.awp5 Sep 2015 09:32:00 ZHi, no, this is not possible with HFSQL - though good old Btrieve (then Novell, now the core of Pervasive PSQL) had that feature…https://forum.pcsoft.fr/es-ES/pcsoft.us.windev/53892-wd20-unique-key-duplicates-null-53900/read.awphttps://forum.pcsoft.fr/es-ES/pcsoft.us.windev/53892-wd20-unique-key-duplicates-null-53900/read.awp[WD20] Unique Key, Duplicates, Nullguestpcsoft.us.windevhttps://forum.pcsoft.fr/es-ES/pcsoft.us.windev/53892-wd20-unique-key-duplicates-null-53899/read.awp4 Sep 2015 21:31:00 ZHi Curtis not that I know off, no... Best regardshttps://forum.pcsoft.fr/es-ES/pcsoft.us.windev/53892-wd20-unique-key-duplicates-null-53899/read.awphttps://forum.pcsoft.fr/es-ES/pcsoft.us.windev/53892-wd20-unique-key-duplicates-null-53899/read.awp[WD20] Unique Key, Duplicates, Null