SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 3)
   ExpressionList (children 1)
    Function arrayStringConcat (children 1)
     ExpressionList (children 2)
      Function arrayPopFront (children 1)
       ExpressionList (children 1)
        Function splitByString (children 1)
         ExpressionList (children 2)
          Literal \'.\'
          Function arrayElement (children 1)
           ExpressionList (children 2)
            Identifier projections
            Literal UInt64_1
      Literal \'.\'
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      TableIdentifier system.query_log
   Function and (children 1)
    ExpressionList (children 2)
     Function equals (children 1)
      ExpressionList (children 2)
       Identifier current_database
       Function currentDatabase (children 1)
        ExpressionList
     Function equals (children 1)
      ExpressionList (children 2)
       Identifier query
       Literal \'SELECT min(id) FROM t FORMAT Null;\'
