v.db.select Prints vector map attributes Vector (v.*) QgsProcessingParameterFeatureSource|map|Input vector map |-1|None|False QgsProcessingParameterNumber|layer|Layer Number|QgsProcessingParameterNumber.Double|1|False|None|1 QgsProcessingParameterString|columns|Name of attribute column(s), comma separated|None|False|True *QgsProcessingParameterBoolean|-c|Do not include column names in output|False QgsProcessingParameterString|separator|Output field separator|,|False|True *QgsProcessingParameterString|where|WHERE conditions of SQL statement without 'where' keyword|None|True|True *QgsProcessingParameterString|group|GROUP BY conditions of SQL statement without 'group by' keyword|None|True|True *QgsProcessingParameterString|vertical_separator|Output vertical record separator|None|False|True *QgsProcessingParameterString|null_value|Null value indicator|None|False|True *QgsProcessingParameterBoolean|-v|Vertical output (instead of horizontal)|False *QgsProcessingParameterBoolean|-r|Print minimal region extent of selected vector features instead of attributes|False QgsProcessingParameterFileDestination|file|Attributes|Txt files (*.txt)|None|False