Update data using temp table

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I have 2 table. From first table I am getting total rs which has to be paid.
I get total rs as 60000.
another table which data are like as follow
ID paidPrice Remainingprice
1 10000 50000
2 5000 45000
3 15000 30000

Now if total gets 70000, than I want to correct each and every remaining price of 2nd table as below
ID paidprice RemainingPrice
1 10000 60000
2 5000 55000
3 15000 40000

Plz help me.

What I have tried:

I used temp table and also cursor but I dont get record by id to update each row exactly. If there is another way to update it then plz suggest me

Posted 22-Jun-17 21:03pm

heta.dave

Updated 22-Jun-17 21:23pm

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Tomas Takac · Answer 1 · 2017-06-22T21:23:00

Assuming there is only one row in the total table:

SQL

UPDATE anothertable
SET RemainingPrice = total.rs - anothertable.PaidPrice
FROM anothertable
CROSS JOIN total

I didn't actually run thisso I hope there may be errors but the general idea is you need to join the two tables. Please note this doesn't do any validation so "total - paidprice" can be negative.