How to compare fields from two different tables

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Please help me to compare two fields from two different tables.
I have 2 tables:
1) Prescribed_Medicines(PID(PK),medCode(FK), UnitPrice, Quantity) and
2) NHIS_Medicines(medcode(PK), UnitPrice, Quantity)

I want to compare the fields UnitPrice, and Quantity in Prescribed_Medicines table with
fields UnitPrice and Quantity in NHIS_Medicines table

Please i need help, please help me

Posted 18-Mar-12 2:22am

Member 8714420

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ZurdoDev 19-Mar-12 8:21am

Compare and do what? Find differences? Find matches? Find sum, avgs, etc?

shreekar 28-Mar-12 17:18pm

If you think there is a correct answer provided, please mark the answer.

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Maciej Los · Answer 1 · 2012-03-20T08:04:00

If you have medCode in both tables, where is the problem?
The example below shows how to get records from 2 tables with equal medCodes and UnitPrices.

SQL

SELECT PM.medCode AS PM_medCode, PM.UnitPrice AS PM_UnitPrice, PM.Quantity AS PM_Quantity, NM.medcode AS NM_medcode, NM.UnitPrice AS NM_UnitPrice, NM.Quantity AS NM_Quantity
FROM Prescribed_Medicines AS PM INNER JOIN NHIS_Medicines AS NM ON PM.mdeCode = NM.medCode
ORDER BY PM.medCode
WHERE PM.UnitPrice = NM.UnitPrice