CreateQuery dist_out (children 3)
 Identifier dist_out
 Columns definition (children 1)
  ExpressionList (children 1)
   ColumnDeclaration key (children 1)
    DataType UInt64
 Storage definition (children 1)
  Function Distributed (children 1)
   ExpressionList (children 4)
    Identifier test_shard_localhost
    Function currentDatabase (children 1)
     ExpressionList
    Identifier null_
    Identifier key
