DescribeQuery (children 1)
 TableExpression (children 1)
  Function s3Cluster (children 1)
   ExpressionList (children 6)
    Literal \'test_cluster_two_shards_localhost\'
    Literal \'http://localhost:11111/test/{a,b,c}.tsv\'
    Literal \'test\'
    Literal \'testtest\'
    Literal \'TSV\'
    Literal \'c1 UInt64, c2 UInt64, c3 UInt64\'