CreateQuery partition_by_ignore (children 3)
 Identifier partition_by_ignore
 Columns definition (children 1)
  ExpressionList (children 2)
   ColumnDeclaration ts (children 1)
    DataType DateTime
   ColumnDeclaration ts_2 (children 1)
    DataType DateTime
 Storage definition (children 4)
  Function MergeTree
  Function tuple (children 1)
   ExpressionList (children 2)
    Function toYYYYMM (children 1)
     ExpressionList (children 1)
      Identifier ts
    Function ignore (children 1)
     ExpressionList (children 1)
      Identifier ts_2
  Function tuple (children 1)
   ExpressionList
  Set
