MS-SQL giving wrong results

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SQL-Server-2016

I am having two tables one is sales and one is purchase. In sales I sold one item one time only. I purchased that item two times. When I tried to see that item sales and purchases with a query , that query showing wrong results.

my query is "

select salesDB.sales,purchDB.purchase from salesDB  inner join purchDB  on salesDB.id=purchDB.id where salesDB.id=1

results are like below
SALES PURCHASE
5000 10000
5000 15000

There actually one time only I sold. Value 5000/-. Two times I purchased. Value 25000
so where I did mistake. I created relation to salesDB.id(primary key) and purchaseDB.id

What I have tried:

I googled for solution and found some solutions from this site and other sites also. I tried those but same result.

Posted 10-Feb-19 21:29pm

vijay_bale

Updated 10-Feb-19 21:50pm

v6

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CHill60 · Accepted Answer · 2019-02-10T21:50:00

Solution 1

There is no mistake - your query is showing everything from Sales AND Purchases.
These articles might help you understand
Visual Representation of SQL Joins[^]
Joining Tables in SQL[^]

What you probably want is a UNION or something like this

SQL

select salesDB.id, 'SALE' as tranType, sales
from salesDB
UNION
select purchDB.id, 'PURC' as tranType, purchase
from purchDB

which should give

1 SALE 5000
1 PURC 10000
1 PURC 15000

Posted 10-Feb-19 21:50pm

CHill60

Comments

vijay_bale 11-Feb-19 4:04am

@ CHILL60, that above code also giving wrong results
four records from sales what i am having (all are different ids means items) and 2 records from that purchase what i am having. Here Were clause I have to mention in which place ?

OriginalGriff 11-Feb-19 4:12am

So show us exactly what is in the Sales and Purchase tables - complete rows, complete with column names - or we don't know what you are starting with!