In SOQL, using the OR operator often prevents the Query Optimizer from using indexes effectively, especially if the fields involve different types of data. This is known as a "non-selective" query structure in LDV environments.
By breaking the query into two separate SOQL statements (Option A), the developer allows each query to be evaluated independently.
SELECT ... FROM Account WHERE CreatedDate = :thisDate (Uses the standard index on CreatedDate).
SELECT ... FROM Account WHERE RecordTypeId = :goldenRT (Uses the standard index on RecordTypeId).
The developer can then combine the results into a Map to ensure uniqueness (preventing duplicates if a record meets both criteria). This approach ensures both queries are "selective" and run much faster than a single query with an OR filter.
Option D is a common anti-pattern because formulas are generally not indexed unless they are "deterministic" and a custom index is requested from Salesforce support; even then, filtering on formulas is often slower than direct field filters. Option B and C do not address the underlying database performance issue.
Contribute your Thoughts:
Chosen Answer:
This is a voting comment (?). You can switch to a simple comment. It is better to Upvote an existing comment if you don't have anything to add.
Submit