Retrieves the value of a JDBC NUMERIC parameter as a java.math.BigDecimal object with as many digits to the right of the decimal point as the value contains.

Parameters:

parameterName the name of the parameter

Returns: the parameter value in full precision. If the value is SQL NULL, the result is null.

Exceptions:

SQLException if parameterName does not correspond to a named parameter; if a database access error occurs or this method is called on a closed CallableStatement

SQLFeatureNotSupportedException if the JDBC driver does not support this method

`SQLException`		if parameterName does not correspond to a named parameter; if a database access error occurs or this method is called on a closed `CallableStatement`
`SQLFeatureNotSupportedException`		if the JDBC driver does not support this method