# SP Util C1 Comparison
Analysis generated on: 4/2/2025 10:12:33 AM
---
## SQL Statement
```sql
SELECT [SP Product Entry].Obsolete, [SP Product Entry].ProductID, [SP Product Entry].PartsPerUnit, [Util Selection C1].*, [SP Units].UnitsPerYear, [ActualWt]/[Usage] AS [AW/Unit], [GrossWt]/[Usage] AS [GW/Unit], [AW/Unit]*[Usage] AS [AW/Year], [GW/Unit]*[Usage] AS [GW/Year]
FROM ([SP Product Entry] LEFT JOIN [SP Units] ON [SP Product Entry].ProductID = [SP Units].ProductID) INNER JOIN [Util Selection C1] ON [SP Product Entry].PartNumber = [Util Selection C1].PartNumber
WHERE ((([SP Product Entry].Obsolete)=0))
ORDER BY [SP Product Entry].ProductID, [Util Selection C1].PartNumber;

```
## Dependencies
- *None*
## Parameters
- *None*
## What it does
**SQL Query Description**
==========================

### Overview

This SQL query retrieves data from three tables: `SP Product Entry`, `SP Units`, and `Util Selection C1`. It joins these tables based on common columns and applies filters to the results.

### Query Steps

1. **Left Join**: The query performs a left join between `SP Product Entry` and `SP Units` tables using the `ProductID` column as the joining criterion. This ensures that all records from `SP Product Entry` are included in the result, even if there is no matching record in `SP Units`.
2. **Inner Join**: The query then joins the resulting table with `Util Selection C1` table on the `PartNumber` column.
3. **Filtering**: Only records from `SP Product Entry` where `Obsolete` is 0 are included in the result set, effectively excluding any obsolete products.
4. **Aggregation**: The query calculates several aggregate values:
	* `[AW/Unit]`: Average weight per unit (calculated as `[ActualWt]/[Usage]`)
	* `[GW/Unit]`: Gross weight per unit (calculated as `[GrossWt]/[Usage]`)
	* `[AW/Year]`: Total average weight per year (calculated as `[AW/Unit]*[Usage]`)
	* `[GW/Year]`: Total gross weight per year (calculated as `[GW/Unit]*[Usage]`)
5. **Sorting**: The results are sorted by `ProductID` and then by `PartNumber`.

### Returned Columns

The query returns the following columns:

* `[SP Product Entry].Obsolete`
* `[SP Product Entry].ProductID`
* `[SP Product Entry].PartsPerUnit`
* Columns from `Util Selection C1` table (all)
* `[SP Units].UnitsPerYear`
* `[AW/Unit]`
* `[GW/Unit]`
* `[AW/Year]`
* `[GW/Year]`

### Notes

The query uses several aliases for clarity:

* `[SP Product Entry]`: Table name
* `[Util Selection C1]`: Table name
* `[SP Units]`: Table name
* `[ActualWt]`, `[Usage]`, `[GrossWt]`: Column names
* `[AW/Unit]`, `[GW/Unit]`, `[AW/Year]`, `[GW/Year]`: Calculated column names

These aliases make the query easier to read and understand.