CreateQuery tab (children 3)
 Identifier tab
 Columns definition (children 2)
  ExpressionList (children 3)
   ColumnDeclaration key (children 1)
    DataType UInt64
   ColumnDeclaration map (children 1)
    DataType Map (children 1)
     ExpressionList (children 2)
      DataType String
      DataType String
   ColumnDeclaration map_fixed (children 1)
    DataType Map (children 1)
     ExpressionList (children 2)
      DataType FixedString (children 1)
       ExpressionList (children 1)
        Literal UInt64_3
      DataType FixedString (children 1)
       ExpressionList (children 1)
        Literal UInt64_3
  ExpressionList (children 4)
   Index (children 2)
    Function mapKeys (children 1)
     ExpressionList (children 1)
      Identifier map
    Function text (children 1)
     ExpressionList (children 1)
      Function equals (children 1)
       ExpressionList (children 2)
        Identifier tokenizer
        Literal \'splitByNonAlpha\'
   Index (children 2)
    Function mapKeys (children 1)
     ExpressionList (children 1)
      Identifier map_fixed
    Function text (children 1)
     ExpressionList (children 1)
      Function equals (children 1)
       ExpressionList (children 2)
        Identifier tokenizer
        Literal \'splitByNonAlpha\'
   Index (children 2)
    Function mapValues (children 1)
     ExpressionList (children 1)
      Identifier map
    Function text (children 1)
     ExpressionList (children 1)
      Function equals (children 1)
       ExpressionList (children 2)
        Identifier tokenizer
        Literal \'splitByNonAlpha\'
   Index (children 2)
    Function mapValues (children 1)
     ExpressionList (children 1)
      Identifier map_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