How to differ between rollup-summary and formula fields using APEX Schema functions?

Hello Chanchal,

Roll up summary field can only be defined on the master object, i.e master in the master-detail relationship, while your formula fields calculate values using fields within a single record. And roll-up summary fields calculate values from a set of related records, such as those in a related list, like contacts in Account.

Thanks.

Hi,

When you describe a Rollup Summary Field, its describe returns null when you call getCalculatedFormula(), unlike a Formula Field.

system.assertEquals(null, rollupDescribe.getCalculatedFormula());
system.assertNotEquals(null, formulaDescribe.getCalculatedFormula());

Hope this helps.