CreateQuery tracking_events_tmp (children 3)
 Identifier tracking_events_tmp
 Columns definition (children 1)
  ExpressionList (children 2)
   ColumnDeclaration APIKey (children 1)
    DataType UInt32
   ColumnDeclaration EventDate (children 1)
    DataType Date
 Storage definition (children 3)
  Function MergeTree
  Function toYYYYMM (children 1)
   ExpressionList (children 1)
    Identifier EventDate
  Function tuple (children 1)
   ExpressionList (children 2)
    Identifier APIKey
    Identifier EventDate