I'm trying to create a basic model using QGIS, the QGIS graphical modeler and the sextante toolbar. In part of the model, I need to select features based upon multiple attribute values (for example - A = 'value' OR A = 'another value'). The select by attribute algorithm provided by QGIS only allows you to enter a single value at a time - is there a simple tool/method to enter an expression to select multiple values from a dataset, and which can be incorporated in the graphical modeler?
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