我想从一个包中提取所有值。我的意思是：

DESCRIBE x;
x: {data: (id: long, value: long)}

y = (WHAT DO I DO HERE?)

DESCRIBE y;
y: {id: long, value: long}

我试过通配符运算符和项目范围表达式，但它们不起作用

y = foreach x generate data.*;                       
ERROR 1200: Syntax error, unexpected symbol at or near '*'

y = foreach x generate data.($0 ..);                       
ERROR 1200: mismatched input '..' expecting RIGHT_PAREN

我怎么。。。？