presto-main/src/main/java/io/prestosql/sql/relational/SqlToRowExpressionTranslator.java/SqlToRowExpressionTranslator/visitDoubleLiteral
class SqlToRowExpressionTranslator:        @Override
        protected RowExpression visitDoubleLiteral(DoubleLiteral node, Void context)
        {
            return constant(node.getValue(), DOUBLE);
        }