hive 行列转换的函数

Hive行列转换的函数是LATERAL VIEW。它可以用于将一列的值按照某种规则进行拆分，然后将每个拆分后的值作为一行返回。具体使用时，可以结合explode函数和split函数来实现行列转换的效果。例如，使用LATERAL VIEW explode(split(col, "/")) tbl AS tag，可以将col字段按照"/"进行拆分，然后将拆分后的每个值作为一行返回，并赋值给tag这个别名。这样就实现了行列转换的功能。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
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