CreateQuery test (children 3)
 Identifier test
 Columns definition (children 1)
  ExpressionList (children 3)
   ColumnDeclaration x (children 1)
    DataType UInt32
   ColumnDeclaration arr1 (children 1)
    DataType Array (children 1)
     ExpressionList (children 1)
      DataType UInt32
   ColumnDeclaration arr2 (children 1)
    DataType Array (children 1)
     ExpressionList (children 1)
      DataType UInt32
 Storage definition (children 2)
  Function MergeTree
  Identifier x
