SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 5)
   ExpressionList (children 2)
    Function extract (alias QUERY_GROUP_ID) (children 1)
     ExpressionList (children 2)
      Identifier query
      Literal \'/\\\\*\\\\s*QUERY_GROUP_ID:(.*?)\\\\s*\\\\*/\'
    Function count (children 1)
     ExpressionList
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      TableIdentifier system.query_log
   Function and (children 1)
    ExpressionList (children 4)
     Function equals (children 1)
      ExpressionList (children 2)
       Identifier current_database
       Function currentDatabase (children 1)
        ExpressionList
     Function notEquals (children 1)
      ExpressionList (children 2)
       Identifier type
       Literal UInt64_1
     Function greaterOrEquals (children 1)
      ExpressionList (children 2)
       Identifier event_date
       Function yesterday (children 1)
        ExpressionList
     Function notEquals (children 1)
      ExpressionList (children 2)
       Identifier QUERY_GROUP_ID
       Literal \'\'
   ExpressionList (children 1)
    Identifier QUERY_GROUP_ID
   ExpressionList (children 1)
    OrderByElement (children 1)
     Identifier QUERY_GROUP_ID
