SQL Server Mathhematical Expression

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SQL-Server-2008R2

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Hi ,
I will get a string like below , it will be a mathematical expression
1)5+5*+Min(5,5,9)=?
2)Max(5+5,5+9,8-3)+6=?
3)Max((5+5),(5+9),(8-3))*9=?
4)(Max(Min(5,5),Max(5,9),Min(3,9))*8)+23=?
i will get it in sql server , as string.I need to get the output
of the string by sql server.This string purely dynamic.

Please help me , if any solution is available.

Thanks
Ayan

Posted 9-Nov-15 1:23am

dear.banerjee

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ZurdoDev 9-Nov-15 7:46am

Do you know how to execute dynamic sql? You can use EXEC (@sql) where @sql is a variable that has valid sql in it.

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Kornfeld Eliyahu Peter · Answer 1 · 2015-11-09T01:47:00

Solution 1

With the consideration, that this looks me as an awful idea...

In SQL you can execute dynamic queries, so you can do something like this

SQL

DECLARE @SQL VARCHAR(MAX) = 'SELECT (5+5)'
EXEC(@SQL)

One point you have to take care of is the valid format of the expressions - in your samples not all expressions are valid SQL...

Posted 9-Nov-15 1:47am

Kornfeld Eliyahu Peter

Comments

dear.banerjee 12-Nov-15 7:33am

Then how will execute Max(5+5,5+9,8-3) ?
Please be sure before answering a question , i have 10 years of experience

Kornfeld Eliyahu Peter 12-Nov-15 14:19pm

If you had a single week of experience, you would know that MAX in SQL is NOT a mathematical function like in C and like...
As I stated above - your statement must be a valid SQL statement to execute it in such way...