i am trying to make database schema for a shop they have stock of products and walk in customers (so no need to record customers).
1 - need to record for stock .
2 - products
3 - selling products
i made tables for category , products , stock
now i am thinking for table for bill , i need to indicate all products with their price and quantity sold on bill slip.
so how to implement that ,
should i record each product with price and quantity for separate row with same bill no , or is there any better way.
simply finding solution to generate list of item sold with quantity and price for each item and sum up of total bill .
thanks in advance
Typically you would use two tables.
Invoices : InvoiceID, InvoiceDate, CustomerID, EmployeeID
and
LineItems : LineItemID, InvoiceID, ProductID, Name, Qty, UnitPrice
See how LineItems contains a foreign key to Invoices...
Related
I'm currently editing an e-commerce site wherein I need to add attributes to the product and assign them different values. I have two tables for the products:
tblproducts
rkeyPrimary
productId
productName
quantity
price
tblprodqtylog
rkeyPrimary
productId
remaining
adjQty
What is the best way to execute this?
I would suggest you to have three tables, based on normalized design.
tblProducts - containing product information
tblProductVariant - containing product variants information (like color, size etc)
tblprodqtylog - containing
product inventory movements. It will have product variant as quantity is specific to variant. Eg. size Small has 6 quantity and 2 got sold and remaining is 4.
tblproducts
productId
productName
tblproductVariant
productvariantid
productid
color
size
Price
Quantity
tblprodqtylog
productvariantid
remaining
adjqty
I am helping someone build a grocery deliver service. Very simple site and order process. The problem I am having is knowing how to come up with schema for the orders. The order would have contact information, but would also need to have all of the products they ordered. Since it can/will be different for each persons order, how would I go about designing this? Would I just have a products ordered field with a string list of all the items? Or would I need multiple linked tables?
Thanks!
You need three tables:
a) Products - Contains the product details
b) Orders - Contains the order header, contact information etc
c) Product_Orders - is a table with two columns: product_id and order_id, that bind the orders to the products, and a quantity field and unit price.
You could have a customers table, but ideally information like the delivery address, etc, would be attached to the order so that if the user changes his address it will not affect your order history.
For the same reason unit price must be in Product_Orders, so that if a product price changes it does not affect previous orders.
Product table
with name and price of all products.
Customer table
with name, address, phone etc...
Order table
with entries for each order: order id, cusomer id, date etc
Order Items table
with all ordered items, with link to id in ordertable, product table, quantity, price, etc...
I have two parent child tables and a couple of supporting tables. I am struggling to figure out the right relationships between them.
Orders, a table that holds a list of Orders including:Order Id, Supplier, Order Date etc..
OrderDetails, a Table holds a list of products that have been ordered, and is a child of Orders, linked on OrderId. Key fields are the ProductId and the Quantity Ordered. Each order containes one or many OrderDetails that outline the products and quantities being ordered.
Shipments, a table that holds a list of Shipments, including Tracking Number and Shipper. Links to Orders through Order Id. An Order may have multiple shipments. For example, I ordered 100 lightbulbs. They were dispatched in 5 shipments.
ShipmentDetails, holds a list of product and shipped quantities and is linked to the Shipments table by ShippingId. Each Shipment may have multiple ShipmentDetails. i.e. One shipment may have 30 Lightbulbs and 10 Door Knobs.
Products is a table that holds a list of Products that need to be both ordered and shipped.
So the logic is that I enter details about the products that are to be ordered in Products. For example, 100 CREE LED Lightbulbs, and 50 Door Handles.
When I place an order, I create an Order in Orders.
i.e. amazon.com, order #45454.
Then I add child rows to that order in OrderDetails. i.e. 30 CREE LED Lightbulbs.
When the order Ships, I create an entry in the Shipments table. i.e. Tracking #46464646464, linked to OrderId in Orders. And then I enter what is in that shipment in ShipmentDetails. For example, only 20 or the 30 CREE LED Lightbulbs may be associated with this Shipping entry.
I am struggling with figuring out how to relate the Shipping Detail records to the Order Detail Table. Lets say the Shipping Detail Table has 4 fields.
ShippingID - a link to the Shipments table parent.
TrackingNum - a field that holds a tracking number.
Product - this should be a drop down, that says, the shipment I belong to is related to a defined Order (because ShipmentDetail is a child of a Shipment record which in turn holds a key to the Orders table, which in turn has OrderDetails that reference products).
Quantity - this should have a default (overridable) value that is the "Quantity Ordered" number from the OrdersDetail record that matches the Order Id and Product Id. Where OrderId is in the Shipments table (linked to the Orders table) and ProductID comes from #3 above. The reason it must be overridable is that a shipment may be a partial shipment.
I am stuck with the preceding #3 and #4. I hope I have explained this in a vaguely understandable way! The pictures below may help!
The ask:
What is the correct join between the ShipmentDetails and the OrderDetail Table
How do I create a field in the ShipmentDetail table with a default value pulled from the Quantities Field of the OrderDetail table, where
Shipments!OrderId = Orders!Id and ShipmentDetail!ProductID = OrderDetails!Product ID
I am working in MS Access 2016 - but I suspect this is a fairly generic SQL question...rather than MS Access specific.
I think the naming is confusing.
What I would rather have is (each first id is autoincrement, forgot how to say this on access):
// Product doesn't contain any information about quantity/price etc ...
create table Products(product_id int, name text, description text ...);
// Orders:
create table Orders(order_id int, client_name text, description text ...);
create table OrderDetails(order_detail_id int, order_id int, product_id int, quantity double, unit_price double, ...);
// Shipments
create table Shipments(shipment_id int, company text, description text ...);
create table ShipmentDetails(shipment_detail_id int, shipment_id int, product_id int, quantity double, price double default 0, ...);
// inserting shipments per product (defaulting to total quantity per product), assuming we have shipment_id SID
insert into ShipmentDetails(shipment_id, order_id, product_id, quantity)
select SID, order_id, product_id, SUM(quantity)
from OrderDetails
group by order_id, product_id;
Then you can of course have some filters (date, customer etc ...).
For the first question, I am not clear what exaclty you want to return.
Here is a comparison of quantities:
select t.order_id, t.product_id, sum(t.quantity) as product_quantity, sum(u.quantity) as shipment_quantity
from OrderDetails t inner join ShipmentDetails u
on t.order_id = u.order_id and t.product_id = u.product_id;
I have an invoice management system. It has quotation, sales order, purchase order
The user has the option to generate invoices from multiple places
quotation when it is approved
sales order when it is accepted by the customer
purchase order directly can be converted to invoice
I have a table and there subtables likes this
quotations, quotations items
sales order, sales order items
purchase order, purchase order items
invoice, invoice items
How can I keep record of where the invoice is generated without breaking the relationships?
In the Invoice table created two new columns:
InvoiceSource VARCHAR(100)
InvoiceSourceID INT
Modify your code to store the source and Id of what created the Invoice. For example, if an invoice is generated from a quotation with primary key 1009. The following will exist in the invoice table:
InvoiceId|InvoiceSource|InvoiceSourceID|...
----------------------------------------
1200| 'QUOTATION'| 1009|...
Subsequently if a Sales Order with Id 1346 is converted to an Invoice the following will exist in the invoice table:
InvoiceId|InvoiceSource|InvoiceSourceID|...
----------------------------------------
1200| 'QUOTATION'| 1009|...
1201| 'SALESORDER'| 1346|...
I have a products table, with the fields product, category and cost, of type varchar, varchar and decimal.
I then have a sales table, with the fields client, productname, quantity, cost, and saledate, of type varchar, varchar, int, decimal and date.
I want to show all of the products sold for a month, say the current month.
However, I don´t want to show every sale individually. I want to automatically add all of one product together and show it as one row.
In the sales table, the cost for each sales record is already multiplied by the quantity.
So for example, to if 5 beers were purchased, it would returned as one row showing name as beers, quanity as 5, and cost as however much.
I need something like say:
Select product, cost from sales, WHERE sales.product=products.name
AND category='food' AND WHERE month(date_field) = month(getdate())
This should show all the sales for a certain category of product for the current month, but is there an easy way to "group" products together?
I would have to take into account the quantity field in the sales table, because one sale is not necessarily only one product
A hopefully clearer example, one sale record maybe for 2 beers for one client with a cost of 10, and another sales record may be to a different client with a quantity of 3 and cost of 15. I want just one record that would say for beer, 5 were sold and the total cost is 25.
I have no idea where to go from as far as I have gotten...
You are looking for something like
Select product, cost from sales,products WHERE sales.product=products.name
AND category='food' AND month(date_field) = month(getdate())
To get a listing of the items linked as you suggest according to the category in the products tables.
To get the summary by category you need something like:
Select category,SUM(Sales.Quantity),SUM(Sales.cost) from
sales,products WHERE sales.product=products.name
AND category='food' AND month(date_field) = month(getdate()) group by category
This will work but there is a lot to criticise in your database structure, specifically to link products by name as you do is not very reliable.
This question looks awfully familiar...
The answer is a SQL GROUP BY statement.
SELECT product, SUM(quantity) FROM sales s, products p WHERE product=p.name AND category='food' AND month(date_field)=month(getdate()) GROUP BY product
The SUM(quantity) above will tally up all the units sold of a particular product in the given month.
Use GROUP BY and COUNT
SELECT productname, cost, COUNT(*) AS cnt
FROM sales LEFT JOIN products ON sales.product = products.productname
WHERE category='food' AND month(date_field) = month(getdate())
GROUP BY productname