correct the below MONTH4 code based on remaining blocks of code in sap datasphere CASE WHEN A."YEAR_TEXT" = YEAR(CURRENT_DATE) AND A."MONTH_NUMBER" = MONTH(CURRENT_DATE) THEN A."Projected_Mnth_End_Stock_Val" -- Current month WHEN (A."YEAR

Your provided SQL CASE expression has several elements that pertain to forecasting stock values based on the current date and projecting future values or months. To ensure inclusivity and logical correctness, especially for MONTH4, it’s pivotal to ensure all potential edge cases are covered correctly while maintaining clarity and correctness in the expressions. Below is the corrected and structured version of the code with more explicit handling of conditions for MONTH4, including enhancements for readability and maintainability. ```sql CASE WHEN A."YEAR_TEXT" = YEAR(CURRENT_DATE) AND A."MONTH_NUMBER" = MONTH(CURRENT_DATE) THEN A."Projected_Mnth_End_Stock_Val" -- Current month WHEN (A."YEAR_TEXT" = YEAR(CURRENT_DATE) AND A."MONTH_NUMBER" = MONTH(CURRENT_DATE) + 1) OR (A."YEAR_TEXT" = YEAR(CURRENT_DATE) + 1 AND A."MONTH_NUMBER" = 1 AND MONTH(CURRENT_DATE) = 12) THEN CASE WHEN COALESCE( LAG(A."Projected_Mnth_End_Stock_Val", 1) OVER ( PARTITION BY A."Agency_Group", A."Agency_Name", A."Agency_Code", A."VKORG" ORDER BY A."YEAR_TEXT", A."MONTH_NUMBER" ), 0 ) + COALESCE(A."PENDING_ARRIVALS", 0) - COALESCE(A."Forecast_Value_AED", 0) <= 0 THEN 0 ELSE COALESCE( LAG(A."Projected_Mnth_End_Stock_Val", 1) OVER ( PARTITION BY A."Agency_Group", A."Agency_Name", A."Agency_Code", A."VKORG" ORDER BY A."YEAR_TEXT", A."MONTH_NUMBER" ), 0 ) + COALESCE(A."PENDING_ARRIVALS", 0) - COALESCE(A."Forecast_Value_AED", 0) END -- MONTH2 WHEN (A."YEAR_TEXT" = YEAR(CURRENT_DATE) AND A."MONTH_NUMBER" = MONTH(CURRENT_DATE) + 2) OR (A."YEAR_TEXT" = YEAR(CURRENT_DATE) + 1 AND A."MONTH_NUMBER" = 1 AND MONTH(CURRENT_DATE) = 11) OR (A."YEAR_TEXT" = YEAR(CURRENT_DATE) + 1 AND A."MONTH_NUMBER" = 2 AND MONTH(CURRENT_DATE) = 12) THEN CASE WHEN (COALESCE( LAG(A."Projected_Mnth_End_Stock_Val", 2) OVER ( PARTITION BY A."Agency_Group", A."Agency_Name", A."Agency_Code", A."VKORG" ORDER BY A."YEAR_TEXT", A."MONTH_NUMBER" ), 0 ) + COALESCE(LAG(A."PENDING_ARRIVALS", 1) OVER ( PARTITION BY A."Agency_Group", A."Agency_Name", A."Agency_Code", A."VKORG" ORDER BY A."YEAR_TEXT", A."MONTH_NUMBER"), 0) - COALESCE(LAG(A."Forecast_Value_AED", 1) OVER ( PARTITION BY A."Agency_Group", A."Agency_Name", A."Agency_Code", A."VKORG" ORDER BY A."YEAR_TEXT", A."MONTH_NUMBER"), 0) + COALESCE(A."PENDING_ARRIVALS", 0) - COALESCE(A."Forecast_Value_AED", 0)) <= 0 THEN 0 ELSE COALESCE( LAG(A."Projected_Mnth_End_Stock_Val", 2) OVER ( PARTITION BY A."Agency_Group", A."Agency_Name", A."Agency_Code", A."VKORG" ORDER BY A."YEAR_TEXT", A."MONTH_NUMBER" ), 0) + COALESCE(LAG(A."PENDING_ARRIVALS", 1) OVER ( PARTITION BY A."Agency_Group", A."Agency_Name", A."Agency_Code", A."VKORG" ORDER BY A."YEAR_TEXT", A."MONTH_NUMBER"), 0) - COALESCE(LAG(A."Forecast_Value_AED", 1) OVER ( PARTITION BY A."Agency_Group", A."Agency_Name", A."Agency_Code", A."VKORG" ORDER BY A."YEAR_TEXT", A."MONTH_NUMBER"), 0) + COALESCE(A."PENDING_ARRIVALS", 0) - COALESCE(A."Forecast_Value_AED", 0) END -- MONTH3 WHEN (A."YEAR_TEXT" = YEAR(CURRENT_DATE) AND A."MONTH_NUMBER" = MONTH(CURRENT_DATE) + 3) OR (A."YEAR_TEXT" = YEAR(CURRENT_DATE) + 1 AND A."MONTH_NUMBER" = 1 AND MONTH(CURRENT_DATE) = 10) OR (A."YEAR_TEXT" = YEAR(CURRENT_DATE) + 1 AND A."MONTH_NUMBER" = 2 AND MONTH(CURRENT_DATE) = 11) OR (A."YEAR_TEXT" = YEAR(CURRENT_DATE) + 1 AND A."MONTH_NUMBER" = 3 AND MONTH(CURRENT_DATE) = 12) THEN CASE WHEN (COALESCE( LAG(A."Projected_Mnth_End_Stock_Val", 3) OVER ( PARTITION BY A."Agency_Group", A."Agency_Name", A."Agency_Code", A."VKORG" ORDER BY A."YEAR_TEXT", A."MONTH_NUMBER" ), 0 ) + COALESCE(LAG(A."PENDING_ARRIVALS", 2) OVER ( PARTITION BY A."Agency_Group", A."Agency_Name", A."Agency_Code", A."VKORG" ORDER BY A."YEAR_TEXT", A."MONTH_NUMBER"), 0) - COALESCE(LAG(A."Forecast_Value_AED", 2) OVER ( PARTITION BY A."Agency_Group", A."Agency_Name", A."Agency_Code", A."VKORG" ORDER BY A."YEAR_TEXT", A."MONTH_NUMBER"), 0) + COALESCE(A."PENDING_ARRIVALS", 0) - COALESCE(A."Forecast_Value_AED", 0) ) <= 0 THEN 0 ELSE COALESCE( LAG(A."Projected_Mnth_End_Stock_Val", 3) OVER ( PARTITION BY A."Agency_Group", A."Agency_Name", A."Agency_Code", A."VKORG" ORDER BY A."YEAR_TEXT", A."MONTH_NUMBER" ), 0) + COALESCE(LAG(A."PENDING_ARRIVALS", 2) OVER ( PARTITION BY A."Agency_Group", A."Agency_Name", A."Agency_Code", A."VKORG" ORDER BY A."YEAR_TEXT", A."MONTH_NUMBER"), 0) - COALESCE(LAG(A."Forecast_Value_AED", 2) OVER ( PARTITION BY A."Agency_Group", A."Agency_Name", A."Agency_Code", A."VKORG" ORDER BY A."YEAR_TEXT", A."MONTH_NUMBER"), 0) + COALESCE(A."PENDING_ARRIVALS", 0) - COALESCE(A."Forecast_Value_AED", 0) END -- MONTH4 END ``` ### Key Corrections and Improvements: 1. **Consistent Formatting:** Indentation and line breaks have been standardized for clarity. 2. **Validations:** Ensured that all potential future stock values account for the inputs and potential zero scenarios of `Projected_Mnth_End_Stock_Val` based on previous months. 3. **Logical Flow:** Retained continuity in checking how the `MONTH` increments work and properly handle wraparounds towards the next year, especially the transition from December to January. 4. **Comments:** Added comments to clarify each block in relation to the respective month for easier future maintenance. Make sure to adapt any specific business logic that might also be necessary to reflect correctly in your system as you test this in your SAP Datasphere environment.