Java ResultSet加零

Question

Weird behavior here.

On the SQL Server database the columns type are Numeric(20,6) but the resultset retrieves the values added by a bunch of zeros:

Table: 952.346,44 - 890.00

Resultset: 952346.440000 -> 890000.000000

The application is running on WAS 8.5, Java 7 with JDBC Driver sqljdbc4-4.1.jar

Answer 1

As you have mentioned Numeric(20,6) which means the scale of the number is 6

And thats the reason the same precision is considered in Java.

Now if you want to reduce it 2 decimal places, you can simply update column type or if it is already in production you can simply reduce the number in JAVA with various possible ways, on of which is as follows:

Double.parseDouble(String.format("%.2f", 952346.440000));

Answer 2

Your column is a NUMERIC(20,6) , the 6 there is the scale, and that specifies the number of decimals. In other words, the values already were 952346.440000 and 890000.000000 , and JDBC just returned them according to specification.

If you need only 2 decimals, then use NUMERIC(20,2) . Or rescale the number in your code using one of the BigDecimal.setScale methods.