I have a DB in SQlite with several layers. I would like to perform a spatial analysis, by buffering several water lines with 30m from origin.
I am using DB Manager in QGIS 2.14 and the SQL statement is:
SELECT PK_UID, buffer('Geometry',30) FROM cursos_agua;
Here's the resulting column. As you can see, empty...
What am I doing wrong?