55 lines
2.6 KiB
Markdown
55 lines
2.6 KiB
Markdown
# Util Make Select 0b
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Analysis generated on: 4/2/2025 10:14:14 AM
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---
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## SQL Statement
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```sql
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SELECT "x X X" AS BestSheetSet, [Filtered Parts 3].PN, Process1.* INTO [Util Selection 0b]
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FROM Process1 RIGHT JOIN ([Filtered Parts 3] LEFT JOIN Process ON [Filtered Parts 3].PN = Process.PartNumber) ON Process1.PartNumber = [Filtered Parts 3].PN
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WHERE (((Process.PartNumber) Is Null) AND ((Process1.PartNumber)=[pn]))
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ORDER BY Process.PartNumber;
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```
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## Dependencies
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- [[Tables/Process1]]
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- [[Tables/Parts]]
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- [[Tables/Process]]
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## Parameters
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- *None*
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## What it does
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**SQL Query Description**
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=========================
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### Overview
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This SQL query performs a complex join operation to retrieve filtered data from multiple tables. The goal is to identify the best sheet set based on certain conditions.
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### Table Involved
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The following tables are involved in this query:
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* `Process1`: A table containing process-related data with columns `PartNumber` and other unspecified fields (`*`).
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* `[Filtered Parts 3]`: A table containing filtered parts data with a column `PN`.
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* `Process`: Another table containing process data with a column `PartNumber`.
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### Query Steps
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1. **Join Operation**: The query first performs an inner join between the `Process1` and `[Filtered Parts 3]` tables based on the `PN` column, resulting in a new temporary table.
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2. **Left Join with Process Table**: Then, it performs another left join between the temporary table from step 1 and the `Process` table. The join condition is that the `PN` column from both tables must match.
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3. **Filtering and Sorting**: After joining the tables, the query filters out rows where either the `PartNumber` in `Process` or `Process1` is null. It also adds a filter to select only rows where `[pn]` equals the `PartNumber` in `Process1`.
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4. **Grouping and Aggregation**: The query groups the remaining rows by the `PartNumber` column from both tables.
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5. **Output**: Finally, it selects specific columns (`BestSheetSet`, `PN`) from the filtered and grouped data and assigns a default value `"x X X"` to the `BestSheetSet` column.
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### Output
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The query produces a new table named `[Util Selection 0b]` with the following structure:
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| BestSheetSet | PN |
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| --- | --- |
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| "x X X" | filtered_PN |
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Note that the actual output will depend on the data in the `Process1`, `[Filtered Parts 3]`, and `Process` tables.
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### Note
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The use of `Is Null` condition in the WHERE clause is unusual. Typically, this would be written as `IS NULL`. However, based on your SQL code, I have followed it as-is to maintain consistency with your original query.
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