CreateQuery tab (children 3)
 Identifier tab
 Columns definition (children 1)
  ExpressionList (children 7)
   ColumnDeclaration fixed_str (children 1)
    DataType FixedString (children 1)
     ExpressionList (children 1)
      Literal UInt64_6
   ColumnDeclaration event_date (children 1)
    DataType Date
   ColumnDeclaration vector_array (children 1)
    DataType Array (children 1)
     ExpressionList (children 1)
      DataType Float32
   ColumnDeclaration nullable_int (children 1)
    DataType Nullable (children 1)
     ExpressionList (children 1)
      DataType Int128
   ColumnDeclaration low_card_string (children 1)
    DataType LowCardinality (children 1)
     ExpressionList (children 1)
      DataType String
   ColumnDeclaration map_column (children 1)
    DataType Map (children 1)
     ExpressionList (children 2)
      DataType String
      DataType String
   ColumnDeclaration tuple_column (children 1)
    DataType Tuple (children 1)
     ExpressionList (children 1)
      DataType UInt256
 Storage definition (children 3)
  Function MergeTree (children 1)
   ExpressionList
  Function tuple (children 1)
   ExpressionList (children 2)
    Identifier fixed_str
    Identifier event_date
  Set
