Thank you very much Vero !
Frank
Le 08/03/2019 à 11:10, Veronica Andreo a écrit :
Hi
functionalities like sqrt() or log() are not available in base SQLite,
then you have to install an extension
See v.db.update manual page and this wiki:
https://grasswiki.osgeo.org/wiki/Build_SQLite_extension_on_Linux
HTH,
Vero
El vie., 8 mar. 2019 05:22, Frank David <frank.da...@geophom.fr
<mailto:frank.da...@geophom.fr>> escribió:
Hello,
How Is it possible to calculate a sqrt from attribut fields to fill
another field, like :
v.db.update map=myvector column=field2 query_column=sqrt(field1)
Or is there any trick ?
Thank you
Frank
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