70 lines
3.4 KiB
Markdown
70 lines
3.4 KiB
Markdown
# PEMPressQ1
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Analysis generated on: 4/2/2025 10:04:49 AM
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---
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## SQL Statement
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```sql
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SELECT DISTINCTROW [PemPress Ops].*, [PemPress Studs].Studsize, [PemPress Work Centers].WC2, [PemPress Work Centers].WC3, [PemPress Work Centers].WC4, IIf([automanual]="AUTO",[Punchauto],[punchman]) AS Punch, IIf([automanual]="AUTO",[AnvilAuto],[AnvilMan]) AS Anvil
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FROM (([PemPress Ops] LEFT JOIN [PemPress Studs] ON [PemPress Ops].PemNumber = [PemPress Studs].PemNumber) LEFT JOIN [PemPress Work Centers] ON [PemPress Ops].AutoManual = [PemPress Work Centers].Type) LEFT JOIN PemPressTooling ON [PemPress Studs].Studsize = PemPressTooling.StudSize
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ORDER BY [PemPress Ops].PartNumber, [PemPress Ops].OpCode;
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```
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## Dependencies
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- [[Tables/PemPressTooling]]
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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 multiple tables in a database and performs joins to combine the results. It returns a distinct row for each unique combination of `PartNumber` and `OpCode`, along with other relevant information.
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### Query Breakdown
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The query consists of three main parts:
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1. **SELECT Statement**
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```sql
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SELECT DISTINCTROW [PemPress Ops].*,
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[PemPress Studs].Studsize,
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[PemPress Work Centers].WC2,
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[PemPress Work Centers].WC3,
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[PemPress Work Centers].WC4,
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IIf([automanual]="AUTO",[Punchauto],[punchman]) AS Punch,
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IIf([automanual]="AUTO",[AnvilAuto],[AnvilMan]) AS Anvil
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```
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This selects all columns (`*`) from the `PemPress Ops` table, along with specific columns and two calculated fields:
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* `Studsize` from the `PemPress Studs` table.
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* Four work center fields (`WC2`, `WC3`, `WC4`) from the `PemPress Work Centers` table.
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* A binary logic field `Anvil` based on the value of `[automanual]`.
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* Another binary logic field `Punch` based on the same condition.
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2. **JOIN Statements**
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```sql
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FROM (([PemPress Ops] LEFT JOIN [PemPress Studs] ON [PemPress Ops].PemNumber = [PemPress Studs].PemNumber)
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LEFT JOIN [PemPress Work Centers] ON [PemPress Ops].AutoManual = [PemPress Work Centers].Type)
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LEFT JOIN PemPressTooling ON [PemPress Studs].Studsize = PemPressTooling.StudSize
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```
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The query performs three left joins:
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* First, it combines data from `PemPress Ops` and `PemPress Studs` tables on the `PemNumber` column.
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* Second, it combines the result with the data from `PemPress Work Centers` table on the `AutoManual` column (which matches the `Type` field in the previous join).
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* Third, it joins this result with the `PemPressTooling` table based on the `Studsize` field.
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3. **ORDER BY Clause**
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```sql
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ORDER BY [PemPress Ops].PartNumber,
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[PemPress Ops].OpCode;
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```
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Finally, the query sorts the results in ascending order by the values of `PartNumber` and `OpCode`.
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### Purpose
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The purpose of this query appears to be data consolidation and preparation for further analysis or reporting. It combines information from multiple tables based on various conditions and joins, providing a comprehensive view of the relationships between different entities within the database.
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### Limitations
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This query may have limitations due to its use of `DISTINCTROW` and multiple left joins, which could impact performance, especially if dealing with large datasets. Additionally, the use of conditional logic (`IIf`) might lead to inconsistencies or errors if not validated properly.
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