I am working in Qgis. I have a vector layer called Kimball Building with about 5,000 records in it. I have multiple fields including one called PermitType. Most of the values in this field are NULL. Some records have another value in the PermitType field. I would like to delete all of the records that have NULL in the PermitType field. I am thinking this could be done in Python, but not sure where to begin. I can delete items individually, but deleting 4,000 records one at a time is not a practical solution. Any help would be appreciated.
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