Have you ever pondered the method for retrieving records from an object in SOQL where field 1 equals field 2?
There could be a need to retrieve a record from an sObject where field 1 (e.g., Firstname) is equal to field 2 (e.g., Lastname), but regrettably, the Salesforce SOQL framework does not allow direct field-to-field comparison.
So, how can we address this?
Although it is possible to achieve this using Apex and loops, the specific requirement is to accomplish it using SOQL.
' + contactsList); ' + contactsList);List<Contact> contactsList = new List<Contact>();
for(Contact contact : [SELECT Firstname, Lastname FROM Contact]){
if(contact.Firstname == contact.Lastname){
contactsList.add(contact);
}
}
System.debug(' ' + contactsList);
Now, turning to the request, the objective is to fulfill the same requirement using solely SOQL.
To achieve this requirement, a workaround is necessary, involving two steps.
Initially, a formula field needs to be created, incorporating a boolean value. The formula for this field will be structured as follows:
// name of the formula field is going to be NameCompare__c IF(Contact.Firstname != Contact.Lastname, 'true', 'false')
Finally, the query will be as follows. Upon examination, it is a straightforward SOQL query with a WHERE clause that filters records based on the boolean value of the NameCompare__c field being false.
List<Contact> contacts = [SELECT Id FROM Contact WHERE NameCompare__c = false];