仅执行一次SQL函数

Question

I have a formula field that gets its value from an expression field (which executes an SQL scalar function) but I want to make sure this expression field is executed only once (the SQL function is passed a row value which is the same for all the rows in the recordset)

The way I see it, the formula field will end up calling the SQL function at every row being rendered in the report.

How would one do that ?

Answer 1

Assign the value from the SQL function to a global variable in the report header and then reuse the value from that variable instead of referencing the SQL.

//{@Assign Value} - formula placed in report header
numbervar ExampleVar := {%SQL Expression};

//{@Use Value} - value can now be used anywhere in the report
numbervar ExampleVar;
...do something with ExampleVar