CreateQuery codecs (children 3)
 Identifier codecs
 Columns definition (children 1)
  ExpressionList (children 1)
   ColumnDeclaration a (children 2)
    DataType UInt8
    Function CODEC (children 1)
     ExpressionList (children 2)
      Function Delta
      Function Delta
 Storage definition (children 2)
  Function MergeTree
  Function tuple (children 1)
   ExpressionList