CreateQuery nested (children 3)
 Identifier nested
 Columns definition (children 1)
  ExpressionList (children 3)
   ColumnDeclaration col1 (children 1)
    DataType Nested (children 1)
     ExpressionList (children 2)
      NameTypePair a (children 1)
       DataType UInt32
      NameTypePair s (children 1)
       DataType String
   ColumnDeclaration col2 (children 1)
    DataType Nested (children 1)
     ExpressionList (children 2)
      NameTypePair a (children 1)
       DataType UInt32
      NameTypePair n (children 1)
       DataType Nested (children 1)
        ExpressionList (children 2)
         NameTypePair s (children 1)
          DataType String
         NameTypePair b (children 1)
          DataType UInt32
   ColumnDeclaration col3 (children 1)
    DataType Nested (children 1)
     ExpressionList (children 2)
      NameTypePair n1 (children 1)
       DataType Nested (children 1)
        ExpressionList (children 2)
         NameTypePair a (children 1)
          DataType UInt32
         NameTypePair b (children 1)
          DataType UInt32
      NameTypePair n2 (children 1)
       DataType Nested (children 1)
        ExpressionList (children 2)
         NameTypePair s (children 1)
          DataType String
         NameTypePair t (children 1)
          DataType String
 Storage definition (children 3)
  Function MergeTree
  Function tuple (children 1)
   ExpressionList
  Set
