CreateQuery mytable_local (children 3)
 Identifier mytable_local
 Columns definition (children 1)
  ExpressionList (children 3)
   ColumnDeclaration created (children 1)
    DataType DateTime
   ColumnDeclaration eventday (children 1)
    DataType Date
   ColumnDeclaration user_id (children 1)
    DataType UInt32
 Storage definition (children 3)
  Function MergeTree (children 1)
   ExpressionList
  Function toYYYYMM (children 1)
   ExpressionList (children 1)
    Identifier eventday
  Function tuple (children 1)
   ExpressionList (children 2)
    Identifier eventday
    Identifier user_id