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Group By and Having clause

 Group By and Having The GROUP BY statement groups rows that have the same values into summary rows, like "find the number of customers in each dept". The GROUP BY statement is must be used with aggregate functions (COUNT, MAX, MIN, SUM, AVG) to group the result-set by one or more columns. GROUP BY Syntax
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How to convert null value to decimal in SQL Server?

 How to convert null value to decimal in SQL Server?

While writing the sql queries s most issue coming when no value available in table and some calculation needs to perform.

in following scenario salary value is null but it needs to display in same format like wise other value appearing in table for salary.

How to convert null value to decimal in SQL Server?


First we need to handle the null value.

select empid,empname,dept, isnull(salary,0) as salary from k4coding_emp

How to convert null value to decimal in SQL Server?


if require further conversion then use following command to convert the value.

select empid,empname,dept, 
cast(isnull(salary,0) as decimal(18,2)) as salary from k4coding_emp

How to convert null value to decimal in SQL Server?



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