CreateQuery ma_dist (children 3)
 Identifier ma_dist
 Columns definition (children 1)
  ExpressionList (children 1)
   ColumnDeclaration x (children 1)
    DataType UInt64
 Storage definition (children 1)
  Function Distributed (children 1)
   ExpressionList (children 3)
    Identifier test_cluster_two_shards_different_databases
    Literal \'\'
    Literal \'shard_01231_distributed_aggregation_memory_efficient\'
