Mika via Elementary: Optimize marketing_ads model for performance and maintainability

[joostboon]

Changes

This PR optimizes the marketing_ads model with several improvements:

1. Replaced SELECT * with explicit column selection

   • Improves query performance by only retrieving needed columns
   • Makes dependencies explicit and easier to understand
   • Prevents unexpected issues if source schemas change

2. Added proper incremental logic

   • The model was configured as incremental but lacked the filtering logic
   • Added {% if is_incremental() %} filters to each CTE to only process new records
   • This will significantly improve processing time for incremental runs

3. Fixed column naming

   • Corrected utm_campain typo to utm_campaign
   • Ensures consistent naming across models

4. Restructured SQL for readability

   • Each union component now has explicit column selection
   • Consistent column ordering in SELECT statements
   • Added whitespace for better readability

These changes maintain the same functionality while improving performance and maintainability.

Created by: [email protected]