如何將這個復雜的查詢轉換為活動記錄CODEIGNITER PHP？

Question

我的ORACLE SQL中有以下查詢：

SELECT dep.airport   AS DEPAIRPORT, 
   dep.scheduled AS SCHEDULED, 
   dep.ontime    AS ONTIME, 
   arr.arrontime AS ARRONTIME FROM   (SELECT AIRPORT,sum(FIRSTFLIGHT) AS FIRSTFLIGHT, SUM(OTPFIRSTFLIGHT) as OTPFIRSTFLIGHT, SUM(ZMDFIRSTFLIGHT) as ZMDFIRSTFLIGHT,
        COUNT(SCHEDULED) AS SCHEDULED,COUNT(ONTIME) AS ONTIME, COUNT(SCHEDARR) AS SCHEDARR FROM (SELECT DEPAIRPORT as AIRPORT,
    MAX(case when A.STATUS = 'Scheduled' and 
    A.ACTUAL_BLOCKOFF is not null then 1 else NULL END) as SCHEDULED,
    MAX(case when ((A.ACTUAL_BLOCKOFF+ interval '7' hour) - (A.SCHEDULED_DEPDT+ interval '7' hour))*24*60 <= '+000000015 00:00:00.000000000' and 
    A.ACTUAL_BLOCKOFF is not null then 1 else NULL END) as ONTIME,
    MAX(case when  A.STATUS = 'Scheduled' and A.ACTUAL_BLOCKON is not null then 1 else NULL END) as SCHEDARR
FROM TABLEA A left join TABLEB B ON A.FLIGHTLEGREF = B.FLIGHTLEGREF
where A.SERVICETYPE IN ('J','G') and to_char(SCHEDULED_DEPDT + interval '7' hour, 'yyyy-mm-dd') between '2018-07-15' and '2018-07-21' 
and A.LATEST_ARRIVALAIRPORT != A.SCHED_DEPARTUREAIRPORT and (SUFFIX != 'R' or SUFFIX IS NULL)
group by DEPAIRPORT, AIRCRAFTREG,SCHEDULED_DEPDT,ACTUAL_BLOCKOFF,ACTUAL_BLOCKON,AIRCRAFTTYPE,SCHEDULED_ARRDT)GROUP BY AIRPORT) dep
   left join (SELECT sched_arrivalairport AS airport, 
            count(CASE 
                    WHEN( ( a.actual_blockon + interval '7' hour ) - ( 
                                a.scheduled_arrdt + interval '7' hour ) ) * 
                        24 * 
                        60 
                        <= 
                              '+000000015 00:00:00.000000000' 
                        AND a.actual_blockon IS NOT NULL THEN 1 
                  END)     AS arrontime 
     FROM   TABLEA A 
     where A.SERVICETYPE IN ('J','G') and to_char(SCHEDULED_DEPDT + interval '7' hour, 'yyyy-mm-dd') between '2018-07-15' and '2018-07-21' 
     and A.LATEST_ARRIVALAIRPORT != A.SCHED_DEPARTUREAIRPORT and (SUFFIX != 'R' or SUFFIX IS NULL)
     GROUP  BY sched_arrivalairport)arr  
          ON ( dep.airport = arr.airport )order by dep.airport `

當我在oracle sql developer中編譯這些代碼時，它們完美地工作。 但是當我在代碼點火器中轉換為活動記錄時，代碼無法正常工作。 這是我在php中轉換的代碼：

$CI->db->select("DEP.AIRPORT   AS DEPAIRPORT, 
   DEP.scheduled AS SCHEDULED, 
   DEP.ontime    AS ONTIME, 
   ARR.arrontime AS ARRONTIME");
$CI->db->from("(");
$subq3 = $CI->db->get_compiled_select();
//$CI->db->reset_query();
$CI->db->select("DEPAIRPORT,sum(FIRSTFLIGHT) AS FIRSTFLIGHT, SUM(OTPFIRSTFLIGHT) as OTPFIRSTFLIGHT, SUM(ZMDFIRSTFLIGHT) as ZMDFIRSTFLIGHT,"
        . "SUM(SCHEDULED) AS SCHEDULED,SUM(ONTIME) AS ONTIME");
 $CI->db->from("(SELECT DEPAIRPORT as DEPAIRPORT,
    MAX(case when A.STATUS = 'Scheduled' and 
    A.ACTUAL_BLOCKOFF is not null then 1 else NULL END) as SCHEDULED,
    MAX(case when ((A.ACTUAL_BLOCKOFF+ interval '7' hour) - (A.SCHEDULED_DEPDT+ interval '7' hour))*24*60 <= '+000000015 00:00:00.000000000' and 
    A.ACTUAL_BLOCKOFF is not null then 1 else NULL END) as ONTIME FROM TABLEA A");$CI->db->join('TABLEB B', 'A.FLIGHTLEGREF = B.FLIGHTLEGREF','left');
$CI->db->where("A.LATEST_ARRIVALAIRPORT != A.SCHED_DEPARTUREAIRPORT");    $CI->db->where(divertStatus());
if ($stnService == "dom"){
$CI->db->where("A.SCHED_DEPARTUREAIRPORT IN (".$domstn.")");
}
if ($stnService == "int"){
$CI->db->where("A.SCHED_DEPARTUREAIRPORT IN (".$intstn.")");
}
if ($aptMgmt == "ap1"){
$CI->db->where_in("A.SCHED_DEPARTUREAIRPORT",$AP1);
}
if ($aptMgmt == "ap2"){
$CI->db->where_in("A.SCHED_DEPARTUREAIRPORT",$AP2);
}
if(!is_null($date1) && !is_null($date2))
$CI->db->where("to_char(SCHEDULED_DEPDT + interval '7' hour, 'yyyy-mm-dd') between '".$date1."' and '".$date2."'");
else $CI->db->where($timeLimit);
$CI->db->where("A.SERVICETYPE IN ('J','G')");
$CI->db->group_by("DEPAIRPORT, AIRCRAFTREG,SCHEDULED_DEPDT,ACTUAL_BLOCKOFF,ACTUAL_BLOCKON,AIRCRAFTTYPE,SCHEDULED_ARRDT) GROUP BY DEPAIRPORT) DEP ");
$subq1 = $CI->db->get_compiled_select();
//$CI->db->reset_query();
$CI->db->select("SCHED_ARRIVALAIRPORT AS AIRPORT, 
            count(CASE 
                    WHEN( ( A.ACTUAL_BLOCKON + interval '7' hour ) - ( 
                                A.SCHEDULED_ARRDT + interval '7' hour ) ) * 
                        24 * 
                        60 
                        <= 
                              '+000000015 00:00:00.000000000' 
                        AND A.ACTUAL_BLOCKON IS NOT NULL THEN 1 
                  END)     AS arrontime ");
$CI->db->from("TABLEA A ");
if(!is_null($date1) && !is_null($date2))
$CI->db->where("to_char(SCHEDULED_DEPDT + interval '7' hour, 'yyyy-mm-dd') between '".$date1."' and '".$date2."'");
else $CI->db->where($timeLimit);
$CI->db->where("A.SERVICETYPE IN ('J','G')");
$CI->db->where("A.LATEST_ARRIVALAIRPORT != A.SCHED_DEPARTUREAIRPORT");    $CI->db->where(divertStatus());
$CI->db->group_by("SCHED_ARRIVALAIRPORT)arr ON DEP.AIRPORT = ARR.AIRPORT");
$CI->db->order_by("DEP.DEPAIRPORT ASC");
$subq2 = $CI->db->get_compiled_select();
//$CI->db->reset_query();
$CI->db->query("$subq3 $subq1 LEFT JOIN ($subq2");

當我嘗試編譯轉換后的代碼時，總是會產生這樣的結果

錯誤編號：904

ORA-00904：“ DEP”。“ AIRPORT”：無效的標識符

我在轉換后的代碼中錯過了什么嗎？ 任何建議，將不勝感激。 謝謝

Answer 1

您可以嘗試使用Codeigniter query（）函數。 嘗試這個：

$your_query = "paste here your ORACLE SQL";
$result = $CI->db->query($your_query)->result_array();

此函數返回結果數組。 此處的文檔https：//www.codeigniter.com/userguide3 ...