user2571510 user2571510 - 4 months ago 4
SQL Question

SQL Server: round decimal number and convert to int (within Select)

I am using the following line within a Select which returns a number with decimals,
e.g. 33.33333.

How can I round this within the Select and convert to integers so that I don't have decimals, e.g. in the above example it should return 33 ?

100 * AVG(CASE WHEN col2 = col3 THEN 1.0 ELSE 0.0 END) AS matchPercent


Many thanks for any help with this, Tim.

Answer

You can use ROUND function to round the value to integer:

ROUND(INT, 100 * AVG(CASE WHEN col2 = col3 THEN 1.0 ELSE 0.0 END), 0) AS matchPercent

This will retain the type, e.g rounded float will stay float. If you also need to return int data type (or other integer data types), you need to also convert it:

CONVERT(INT, ROUND(INT, 100 * AVG(CASE WHEN col2 = col3 THEN 1.0 ELSE 0.0 END), 0)) AS matchPercent