[Solved] How to update stock quantity according to their batch numbers [closed]

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Introduction

When managing inventory, it is important to keep track of stock quantity according to their batch numbers. This ensures that you have the right amount of stock available for customers and that you are not overstocking or understocking. In this article, we will discuss how to update stock quantity according to their batch numbers. We will cover the different methods of tracking stock, how to update stock quantity, and how to ensure accuracy. By the end of this article, you should have a better understanding of how to update stock quantity according to their batch numbers.

Solution

Assuming you are using a relational database, the following query should do the trick:

UPDATE stock
SET quantity = quantity + (SELECT SUM(quantity)
FROM batch
WHERE stock.batch_number = batch.batch_number)
WHERE EXISTS (SELECT *
FROM batch
WHERE stock.batch_number = batch.batch_number);


WARNING Your current code is vulnerable to SQL injection. Make sure to always use parameterized prepared statements and never use die(mysqli_erro($con)) in your code.

You can solve the problem without any PHP logic. It is always better to do such operations in one step in SQL. However, this task is not very easy to do in one step, but it is possible with one trick. The trick is to use a temporary variable in the UPDATE statement to keep track of used inventory.

$con->begin_transaction();

$con->query('SET @qty = 7');
$stmt = $con->prepare('UPDATE purchase_order 
    SET qty_avbl = qty_avbl-(@bought := LEAST(@qty,qty_avbl)), 
    qty_avbl = if(@qty := @[email protected], qty_avbl, qty_avbl) 
    WHERE pid = ?
    ORDER BY batch_number');
$stmt->bind_param('s', $pid);
$stmt->execute();

$con->commit();

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solved How to update stock quantity according to their batch numbers [closed]


Solved: How to Update Stock Quantity According to Batch Numbers

Keeping track of stock quantity according to batch numbers can be a tricky task. However, with the right tools and processes in place, it can be done efficiently and accurately. Here are some tips on how to update stock quantity according to batch numbers.

1. Use a Barcode Scanner

Using a barcode scanner is the most efficient way to update stock quantity according to batch numbers. This is because it eliminates the need for manual data entry and ensures accuracy. All you need to do is scan the barcode of the item and the scanner will automatically update the stock quantity.

2. Use a Stock Management System

Using a stock management system is another great way to update stock quantity according to batch numbers. This system will allow you to track the quantity of each item in each batch and update the stock quantity accordingly. It also allows you to set up alerts when stock levels are low, so you can restock in time.

3. Use a Spreadsheet

Using a spreadsheet is a simple and effective way to update stock quantity according to batch numbers. All you need to do is create a spreadsheet with columns for the item name, batch number, and quantity. Then, you can enter the quantity of each item in each batch and update the stock quantity accordingly.

4. Use a Database

Using a database is another great way to update stock quantity according to batch numbers. This is because it allows you to store all the data in one place and easily access it when needed. You can also set up automated processes to update the stock quantity according to the batch numbers.

Conclusion

Updating stock quantity according to batch numbers can be a tricky task. However, with the right tools and processes in place, it can be done efficiently and accurately. Using a barcode scanner, stock management system, spreadsheet, or database are all great ways to update stock quantity according to batch numbers.