66 lines
2.3 KiB
Markdown
66 lines
2.3 KiB
Markdown
# Util Make Duplicate Revision Remover 1
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Analysis generated on: 4/2/2025 10:13:31 AM
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---
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## SQL Statement
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```sql
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SELECT Left$([PartNumber],7) AS prt, Trim$(Right$([PartNumber],1)) AS Rev, Process.PartNumber AS PartNumber
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FROM Process
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ORDER BY Left$([PartNumber],7), Trim$(Right$([PartNumber],1)) DESC;
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```
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## Dependencies
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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 retrieves data from the `Process` table and performs various string manipulations to extract specific information.
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### Query Breakdown
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#### 1. SELECT Clause
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The `SELECT` clause specifies the columns that will be retrieved from the database. In this case:
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* `Left$([PartNumber],7)`: Extracts the first 7 characters of the `PartNumber` column and returns them as a string. The `$` symbol is used to denote string concatenation in SQL Server.
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* `Trim$(Right$([PartNumber],1))`: Removes the last character (if any) from the `PartNumber` column using the `TRIM` function with the `$` symbol for string concatenation. This effectively extracts the rev number, which is the last digit of the part number.
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#### 2. FROM Clause
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The `FROM` clause specifies the table that contains the data to be retrieved:
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* `Process`: The table from which to retrieve data.
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#### 3. ORDER BY Clause
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The `ORDER BY` clause sorts the retrieved data in ascending order based on two columns:
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* `Left$([PartNumber],7)`: The first 7 characters of the part number.
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* `Trim$(Right$([PartNumber],1))`: The last digit (rev number) of the part number. This column is sorted in descending order.
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#### 4. AS Clause
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The `AS` clause assigns aliases to the extracted columns:
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* `prt`: Alias for the first 7 characters of the part number.
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* `Rev`: Alias for the rev number (last digit of the part number).
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* `PartNumber`: Alias for the original `PartNumber` column.
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#### 5. ORDER BY Syntax
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The specific syntax used for sorting in this query is an extension to the standard SQL syntax, allowing for sorting on multiple columns with a custom order.
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### Example Output
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| prt | Rev | PartNumber |
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| --- | --- | --- |
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| XYZ1234 | 4 | XYZ1234 |
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| XYZ1233 | 3 | XYZ1233 |
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| ... | ... | ... |
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The output will show the first 7 characters of each part number followed by the last digit (rev number) in descending order.
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