CreateQuery input (children 3)
 Identifier input
 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 buffer_
    Identifier key
