Query.GetFilter(Any) Method
Version: Available or changed with runtime version 1.0.
Returns the filters that are set on the field of a specified column in the query. The following code shows the syntax of the GETFILTER method. Query is a variable of the Query data type that specifies the query object.
Syntax
Filter := Query.GetFilter(Column: Any)
Parameters
Query
Type: Query
An instance of the Query data type.
Column
Type: Any
The name of the column in the query. A column name is defined by the Name Property.
Return Value
Filter
Type: Text
The filters of the column.
Remarks
The GetFilter method returns the filters that are currently set for a data column or filter row by the SetFilter Method (Query) method, SetRange Method (Query) method, and the column's ColumnFilter Property. The GetFilter method does not return filters that are set on a column's source field by the DataItemTableFilter Property or global filters that are set by the FilterGroup method.
You can call the GetFilter method multiple times and at any point in the code. If you call the GetFilter method before the SetFilter or SetRange method, then the GetFilter method returns only filters on the column that are set by the column's ColumnFilter property.
Filters that are set by the SetFilter method and SetRange method are applied to a query when the query is opened with a call to the Open, SaveAsXML, or SaveAsCSV methods. You must consider the location of the GetFilterS method with respect to these methods to obtain the desired results. For example, in the following two code examples, the GetFilter method will return the filter that is set by the SetFilter method. However, in the first example, the filter has been applied to the query dataset; in the second example, the filter has not been applied.
Query.SetFilter(Column, String);
Query.Open;
Query.GetFilter(Column);
Query.Read;
Query.Open;
Query.SetFilter(Column, String);
Query.GetFilter(Column);
Query.Read;
Example
The following AL code example demonstrates how to use the GetFilter method on a query. The example code sets a filter on a query column, and then displays a message when the query is run that indicates the filter on the column.
This example requires that you create a query called Customer_SalesQuantity that has the following characteristics:
Links table 18 Customer with table 37 Sales Lines from the CRONUS International Ltd. demonstration database.
Includes columns for the Name and No. fields from the Customer table and the Quantity field from Sales Lines table.
- The ColumnFilter property of the Quantity column is set to include values greater than 5.
The following AL code runs the query and displays a message that contains the filter that is set on a query column. You can add the code to a codeunit, and then run the codeunit to see the results.
var
MyQuery: Query "Customer SalesQuantity";
MyFilter: Text;
Text000: Label 'The filter is: %1';
begin
// Sets a filter to display only sales quantities greater than 10. This overwrites the ColumnFilter property.
MyQuery.SetFilter(Quantity, '>10');
// Runs the query and applies the filter.
MyQuery.Open;
// Returns the filter on the Quantity column and displays the filter in a message.
MyFilter := MyQuery.GetFilter(Quantity);
Message(Text000, MyFilter);
end;
Running the code returns the following message:
The filter is: Quantity > 10