SQL JOIN giving doubled values - sql

Question

EDIT ---
SQL FIDDLE sqlfiddle.com/#!18/f08bd/4
I couldn't load all the data into this as running out of limit on SQL FIDDLE but somehow the results are correct there with the little of sample data, but on my database it doubles somehow.
I am trying to display a total quantity of products, their weight and price.
The results come from 4 different tables.
When I do this without join then I get proper values but when I use Join then I get double values on all outputs.
Without join I can't achieve this as these results need to be all in one table.
I tried not using Join and just including those tables in 'FROM' but that thrown me errors about issues converting to numeric. I also tried Union but didn't work.
When using no join and not trying to display all the values, I get the desired output but with missing columns that I missed out on purpose to test this.
SELECT PriceListTest.Description, COUNT(ItemCode) AS Quantity,
SUM(Weight) AS 'Weight', Item.Pieces, PriceListTest.Price,
CAST(SUM( PriceListTest.Price * Weight) as
DECIMAL(10,2)) as 'Unit Price', CAST(SUM(PriceListTest.Price * Weight) as
DECIMAL(10,2))
AS 'Nett Amount'
FROM StockItems
INNER JOIN PriceListTest ON
StockItems.ItemCode = PriceListTest.Description
INNER JOIN Item ON StockItems.ItemCode = Item.ShortCode
WHERE Barcode IN (SELECT DISTINCT Barcode FROM StockOuttbl
WHERE ContainedID = 'isr5063' AND Status ='' GROUP BY Barcode) AND
PriceListTest.CustomerID = (SELECT DISTINCT CustomerID From Customerstbl
WHERE CustomerID ='1')
GROUP BY PriceListTest.Description, Item.Pieces, PriceListTest.Price;
Status in this case is empty, so that's not the issue
I getting these values:
Description Quantity Weight Pieces Price Unit Price Nett Amount
MAJ 52 20242 0 1.23 24897.66 24897.66
FLOCK 50 17206 0 1.23 21163.38 21163.38
This is the output I am looking:
Description Quantity Weight Pieces Price Unit Price Nett Amount
MAJ 26 10121 0 1.23 12448.83‬ 12448.83
‬
FLOCK 25 8603 0 1.23 10581.69 10581.69
When I don't use the PriceListTest in Join then I don't get the doubles, but then it's not exactly what I am looking for.
I get:
Description Quantity Weight Pieces
MAJ 26 10121 0
FLOCK 25 8603 0
EDIT-- Added the data for the tables
PriceListTest---
OID ShortCode Description CustomerID Price
7372 MAJ MAJ 1 1.23
7373 FLOCK FLOCK 1 1.23
StockItems---
TimeStamp DateStamp ItemCode Barcode ID Weight
104414357 20190701 MAJ 20190701104413935 7198 302
125350401 20190701 MAJ 20190701125349979 7220 360
125507063 20190703 MAJ 20190703125506641 7513 336
StockOutTbl---
ID AddedTimeStamp Quant Line UserID Weight Barcode Status Type StockoutTimeStamp StockoutUser TerminalStockOut TerminalAdded AddedDateStamp StockOutDateStamp ContainedID
41 115020205 NULL NULL NULL 336 20190703125506641 NULL 115020208 user 1 TC20 NULL 20190704 20190704 isr5063
Item Table ----
OID ShortCode ScreenCode Description AdminOid Kilos Pieces Inactive CategoryTitleStr BigBale
203 MAJ MAJ MAJ NULL 0 0 0 45 1
204 FLOCK FLOCK FLOCK NULL 0 0 0 45 1
Excuse me for the bad formatting.
I'd appreciate any help with this. Thanks in advance!

Answer 1

use subquery and distinct prcelist from 2nd table in subquery then use join
and there is no need GROUP BY Barcode insside your subquery cause you alredy used distinct
SELECT PriceListTest.Description, COUNT(ItemCode) AS Quantity,
SUM(Weight) AS 'Weight', Item.Pieces, PriceListTest.Price,
CAST(SUM( PriceListTest.Price * Weight) as
DECIMAL(10,2)) as 'Unit Price', CAST(SUM(PriceListTest.Price * Weight) as
DECIMAL(10,2))
AS 'Nett Amount'
FROM StockItems
INNER JOIN( select distinct * from PriceListTest) as PriceListTest ON
StockItems.ItemCode = PriceListTest.Description
INNER JOIN Item ON StockItems.ItemCode = Item.ShortCode
WHERE Barcode IN (SELECT DISTINCT Barcode FROM StockOuttbl
WHERE ContainedID = 'isr5063' AND Status ='' ) AND
PriceListTest.CustomerID = (SELECT DISTINCT CustomerID From Customerstbl
WHERE CustomerID ='1')
GROUP BY PriceListTest.Description, Item.Pieces, PriceListTest.Price;