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01-documentation
01-firebird
02-ibexpert
03-ibexpert-ibeblock
04-ibexpert-udf-functions
04-01-string-functions
04-02-numeric-functions
04-03-date_time-functions
04-04-blob-functions
04-05-uuid-functions
04-06-converting-functions
04-07-checksum-functions
04-08-functions-for-constants
04-09-divers-functions
04-09-01-diverse-functions
04-09-02-nvl-functions
f_dnvl
f_dnvl2
f_invl
f_invl2
f_snvl
f_snvl2
04-10-file-functions
05-ibexpert-ibeblock-functions
06-ibexpert-ibeblock-examples
07-procedural-extensions-of-ibeblock
1.1
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NVL Functions
F_DNVL
F_DNVL2
F_INVL
F_INVL2
F_SNVL
F_SNVL2