how to do calculation in stored procedure

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HI,

I am going to one calculation. Below are my code. I want to select some data in temp table and i do that calculation for all the values intblCAL_PLAN. and save that to same table. how can i do this?
Here DAYSINMONTH has 12 values(30,31....) I do the calculation for this 12 values and save withinit.
Anyone help me to do this?

SQL

UPDATE dbo.tblCAL_PLAN SET AVAILBLEBED=
  (
  (SELECT AVAILBLEBEDDAYS FROM #TEMP_FA_2003)/
  ((SELECT DAYSINMONTH FROM #TEMP_FA_2003) *
  (SELECT DAYSINMONTH FROM dbo.tblCAL_PLAN WHERE FACILITY='FA_2003')
  ))

Posted 13-Mar-14 21:37pm

vinodhini sekar

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Tomas Takac 14-Mar-14 16:57pm

Could you edit your question and post structure of tblCAL_PLAN, #TEMP_FA_2003 and the query you use to populate #TEMP_FA_2003?

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Maciej Los · Answer 1 · 2014-03-14T12:50:00

Solution 1

To update table with SELECT statement, try this:

SQL

UPDATE t1 SET t1.Field1 = t2.AVAILBLEBEDDAYS/t2.DAYSINMONTH *t1.DAYSINMONTH 
FROM tblCAL_PLAN AS t1 INNER JOIN #TEMP_FA_2003 AS t2 ON t1.Key = t2.ForeignKey
WHERE t1.FACILITY='FA_2003'

Posted 14-Mar-14 12:50pm

Maciej Los