public override ISqlValue Subtract(ISqlValue a, ISqlValue b)
{
if (!(a is SqlNumber) ||
!(b is SqlNumber))
{
return(SqlNull.Value);
}
var x = (SqlNumber)a;
var y = (SqlNumber)b;
return(SqlMath.Subtract(x, y, Precision));
}
public static SqlNumber operator -(SqlNumber a, SqlNumber b)
{
return(SqlMath.Subtract(a, b));
}