Ingres 12.0 | Using the If-Then-Else Statement Combination

Forms-Based Application Development Tools User Guide > Part 5: 4GL > Writing 4GL Statements > Flow-Control Statements > Using the If-Then-Else Statement Combination

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Using the If-Then-Else Statement Combination

The if-then-else statement combination is the simplest form of flow-control statement, letting you choose between alternative paths of execution. The if statement applies to logical (Boolean) expressions, which can include comparison operators and logical operators (AND, OR, and NOT). The example below shows how to control the flow of frames within an application on the basis of the status field on the current form:

if status = 'n' then
  callframe new;
elseif status = 'c' then
  callframe completed;
else
  callframe inprogress;
endif;

Last modified date: 08/28/2024