如何将字符串列表转换/拆分为要在 sql 中使用的列 spark java

Question

i have a List=["a","b","c"] and i need to split this list into strings to use them like:

SELECT columns

i tried

String.join(",",["a","b","c"])

but i obtain usually the same error (because i think that it's seen like an only column):

org.apache.spark.sql.AnalysisException: cannot resolve '`a,b,c`'

plz how can split the list to multiple strings to use them in my select

Answer 1

your written code has problem where you passed an array of values which you have to write it as below:

String value = String.join(",", new String[] {"a","b","c"});
System.out.println(value);