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What is the difference between != NULL and IS NOT NULL in QGIS filter expressions? - Geographic Information Systems Stack Exchange
![What is the difference between != NULL and IS NOT NULL in QGIS filter expressions? - Geographic Information Systems Stack Exchange What is the difference between != NULL and IS NOT NULL in QGIS filter expressions? - Geographic Information Systems Stack Exchange](https://i.stack.imgur.com/7Y0UI.png)
What is the difference between != NULL and IS NOT NULL in QGIS filter expressions? - Geographic Information Systems Stack Exchange
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