correct the below code which should work if current month is equal to october or november or december in sap datasphere CASE WHEN A."YEAR_TEXT" = YEAR(CURRENT_DATE) AND A."MONTH_NUMBER" = MONTH(CURRENT_DATE) THEN A."Projected_Mnth_End_Stock_V
Your code logic looks like it mainly addresses the handling of projected month-end stock values based on the current month in SAP DataSphere. However, there are some improvements we can make to ensure the logic for months October, November, and December works correctly. Below is the corrected and streamlined version of your SQL case statement:
```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" IN (1, 2) 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" IN (1, 2, 3) AND MONTH(CURRENT_DATE) = 10) OR
(A."YEAR_TEXT" = YEAR(CURRENT_DATE) + 1 AND A."MONTH_NUMBER" IN (2, 3) 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 Points
1. **Month Handling**: I ensured the conditions specifically account for months October, November, and December, and their overlaps into the next year.
2. **COALESCE**: The use of `COALESCE` remains the same, ensuring that null values are handled correctly.
3. **Logical Clarity**: The edits enhance the readability of the code without changing its core logic.
4. **Performance Consideration**: While your case logic may still execute multiple analytics functions, remember that depending on the data size, performance might vary. Consider optimizing further by limiting the number of calculations if possible.
Make sure to test this code in your specific SAP DataSphere environment to ensure it meets your business logic requirements effectively.