SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 3)
   ExpressionList (children 2)
    Literal \'tmp_table_01818\'
    Function count (children 1)
     ExpressionList
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      TableIdentifier tmp_table_01818
   Function equals (children 1)
    ExpressionList (children 2)
     Identifier advertiser_id
     Literal \'ClickHouse\'