CreateQuery tab (children 3)
 Identifier tab
 Columns definition (children 2)
  ExpressionList (children 3)
   ColumnDeclaration key (children 1)
    DataType UInt64
   ColumnDeclaration arr (children 1)
    DataType Array (children 1)
     ExpressionList (children 1)
      DataType String
   ColumnDeclaration arr_fixed (children 1)
    DataType Array (children 1)
     ExpressionList (children 1)
      DataType FixedString (children 1)
       ExpressionList (children 1)
        Literal UInt64_3
  ExpressionList (children 2)
   Index (children 2)
    Identifier arr
    Function text (children 1)
     ExpressionList (children 1)
      Function equals (children 1)
       ExpressionList (children 2)
        Identifier tokenizer
        Literal \'splitByNonAlpha\'
   Index (children 2)
    Identifier arr_fixed
    Function text (children 1)
     ExpressionList (children 1)
      Function equals (children 1)
       ExpressionList (children 2)
        Identifier tokenizer
        Literal \'splitByNonAlpha\'
 Storage definition (children 2)
  Function MergeTree
  Identifier key