# Processes by material 2a
Analysis generated on: 4/2/2025 10:06:13 AM
---
## SQL Statement
```sql
DELETE [RMSFILES#_IEMUP1A0].ACTIV, [Process by material].*
FROM [Process by material] LEFT JOIN [RMSFILES#_IEMUP1A0] ON [Process by material].prt = [RMSFILES#_IEMUP1A0].PRDNO
WHERE ((([RMSFILES#_IEMUP1A0].ACTIV)="0"));

```
## Dependencies
- [[Tables/[RMSFILES__IEMUP1A0]]]
## Parameters
- *None*
## What it does
**SQL Code Explanation**
==========================

### Description

This SQL code deletes rows from the `[Process by material]` table where a matching row exists in the `[RMSFILES#_IEMUP1A0]` table and the `PRDNO` matches, but the corresponding record is inactive (`ACTIV = "0"`).

### Code Breakdown

#### Table Names and Aliases

*   `[Process by material]`: The table from which rows will be deleted.
*   `[RMSFILES#_IEMUP1A0]`: The table used for join operations. Its alias is `_IEMUP1A0`.
*   `.ACTIV` and `.PRDNO` are columns in the `[Process by material]` and `[RMSFILES#_IEMUP1A0]` tables, respectively.

#### Join Operation

The code performs a `LEFT JOIN` operation between the two tables on the condition that their corresponding `PRDNO` values match:

```sql
FROM [Process by material] LEFT JOIN [RMSFILES#_IEMUP1A0] ON [Process by material].prt = [RMSFILES#_IEMUP1A0].PRDNO
```

The `.prt` column in the `[Process by material]` table is matched with the `.PRDNO` column in the `[RMSFILES#_IEMUP1A0]` table.

#### Delete Condition

Rows are deleted from the `[Process by material]` table where an inactive record exists in the `[RMSFILES#_IEMUP1A0]` table:

```sql
WHERE ((([RMSFILES#_IEMUP1A0].ACTIV)="0"));
```

This condition filters rows based on the value of `.ACTIV` in the `[RMSFILES#_IEMUP1A0]` table. If `ACTIV` equals `"0"`, it means the record is inactive, and its corresponding row should be deleted from the `[Process by material]` table.

### SQL Syntax

The syntax for this query uses the following features:

*   Table aliases (`[RMSFILES#_IEMUP1A0].*`) allow for easier naming of columns.
*   `LEFT JOIN` ensures that all rows in the left table are included, even if there is no match in the right table.

### SQL Usage

This query is typically used to remove records from a production database where an inactive record exists in another table.