However, the usage of similar variables in the load script is another way they can be utilised, to clean up script and remove repetition. These variables can make code reuse even more flexible, which is great for pivot style tables where there is a fixed number of columns (perhaps 12 months) and more than one total column (perhaps a Total and an Average).Īs I suspect this usage of parameterized variables has been covered elsewhere before I will not repeat it here. The ability to pass parameters into variables is something I have been using for some time, after picking up the technique from Stephen Redmond’s blog. In this post I show how and give a recipe for a NetworkDays function that excludes public holidays. The example assumes that you use the sample data and field definition from the previous example.The implementation of variables and dollar sign expansion in QlikView and Qlik Sense is incredibly flexible and can be used to great effect in load scripts. This is achieved by assigning the value 4 to the first_month_of_year parameter, which will affect the DayNumberOfYear field that is defined. In this case we want to use a fiscal year that starts in April. In this example we re-use the calendar definition that was created in the previous example. A parameter assignment is defined in the form name=value and overrides the parameter value that is set in the base field definition. The new field definition will function the same way as the definition it is based on, with the exception if you use parameter_assignment to change a value used in the field expressions.Ī comma separated list of parameter assignments. The field definition to re-use when creating the new field definition. Name of the field definition, ended with a colon. Use $1 to reference the data field from which the derived fields should be generated. A field is defined in the form As field_name tagged tag. Optional.Ī comma separated list of fields to generate when the field definition is used. A parameter is defined in the form name=value and is assigned a start value, which can be overridden when a field definition is re-used. '$date'Thank you for bringing this to our attention, and apologies for the inconvenience.Ī comma separated list of parameters. Applying tags is optional, but if you do not apply tags that are used to specify sort order, such as $date, $numeric or $text, the derived field will be sorted by load order as default. Warning noteDo not use autoCalendar as name for field definitions, as this name is reserved for auto-generated calendar templates.Ī comma separated list of tags to apply to fields derived from the field definition.
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