横向视图在配置单元中爆炸

Question

我有一个名为exampleTable的两列数组字符串的表。

Array<string> col1 Array<string> col2 
["a", "b" , "c" ]  ["x","y","z"] 
["aa", "bb" , "cc" ]  ["xx","yy","zz"] 

我的目标是产生这样的

col1     col2 
"a"      "x" 
"b"      "y" 
"c"      "z" 
"aa"      "xx" 
"bb"      "yy" 
"cc"      "zz" 

我想过使用LATERL VIEW像表：

SELECT myCol1, myCol2 FROM exampleTable 
     LATERAL VIEW explode(col1) myTable1 AS myCol1 
     LATERAL VIEW explode(col2) myTable2 AS myCol2; 

但这会产生这个代替

col1     col2 
"a"      "x" 
"a"      "y" 
"a"      "z" 
"a"      "xx" 
"a"      "yy" 
"a"      "zz" 
"b"      "x" 
"b"      "y" 
"b"      "z" 
"b"      "xx" 
"b"      "yy" 
"b"      "zz" 
"c"      "x" 
"c"      "y" 
"c"      "z" 
"c"      "xx" 
"c"      "yy" 
"c"      "zz" 
"aa"      "x" 
"aa"      "y" 
"aa"      "z" 
"aa"      "xx" 
"aa"      "yy" 
"aa"      "zz" 
"bb"      "x" 
"bb"      "y" 
"bb"      "z" 
"bb"      "xx" 
"bb"      "yy" 
"bb"      "zz" 
"cc"      "x" 
"cc"      "y" 
"cc"      "z" 
"cc"      "xx" 
"cc"      "yy" 
"cc"      "zz" 

如何我可以解决这个问题吗？ 在此先感谢。

Answer 1

您可以使用explode UDTF或explode2 UDTF作为基础编写UDTF。

Refer here使用爆炸2基地。