PHP : mysql_multi_query()를 사용하여 다중 쿼리를 실행하는 방법

Question

두 SQL을 비슷하게 비교하는 방법에 대해 알아 보았습니다. 첫 번째 쿼리에서 현재 날짜를 사용하여 두 날짜와 두 번째 쿼리간에 계산됩니다.

PHP :

$sql="select all_dates.value1 as `Date`, sum(coalesce(`Inward(B_Qty)`, '0')) as `Inward`, sum(coalesce(`Outward(B_Qty)`, '0')) as `Outward` 
    from (select distinct M_Date as value1 from machine where J_Name = '180MLGMV' and DATE(M_Date) between '2016-06-01' and '2016-06-06' 
    union select distinct M_Date from machine where Pre_Req = '180MLGMV' and DATE(M_Date) between '2016-06-01' and '2016-06-06') as all_dates 
    left join (select M_Date, sum(A_Prod) AS `Inward(B_Qty)` 
    from machine where J_Name = '180MLGMV' and DATE(M_Date) between '2016-06-01' and '2016-06-06' group by M_Date) 
    as g on g.M_Date = all_dates.value1 
    left join(select M_Date, sum(NoBot) AS `Outward(B_Qty)` 
    from machine where Pre_req ='180MLGMV' and DATE(M_Date) between '2016-06-01' and '2016-06-06' group by M_Date) 
    as f on f.M_Date = all_dates.value1 group by all_dates.value1 ;" ; 

    $sql.="select all_dates.value1 as `Date`, sum(coalesce(`Inward(B_Qty)`, '0')) as `Inward`, sum(coalesce(`Outward(B_Qty)`, '0')) as `Outward` 
    from (select distinct M_Date as value1 from machine where J_Name = '180MLGMV' and M_Date='2016-06-07' 
    union select distinct M_Date from machine where Pre_Req = '180MLGMV' and M_Date='2016-06-07') as all_dates 
    left join (select M_Date, sum(A_Prod) AS `Inward(B_Qty)` 
    from machine where J_Name = '180MLGMV' and M_Date='2016-06-07' group by M_Date) 
    as g on g.M_Date = all_dates.value1 
    left join(select M_Date, sum(NoBot) AS `Outward(B_Qty)` 
    from machine where Pre_req ='180MLGMV' and M_Date='2016-06-07' group by M_Date) 
    as f on f.M_Date = all_dates.value1 group by all_dates.value1 "; 

    $list1=mysqli_multi_query($sql,$con); 
    while($row_list1=mysql_fetch_array($list1)) 
       { 
       $b=$b+$row_list1['Inward']; 
       $c=$c+$row_list1['Outward']; 


} 

안쪽과 바깥쪽으로 각각 Query.I의 날짜의 데이터를 검색하는 네 개의 데이터를 검색 할 mysqli_multi_query 아래 작성해야 무엇을 의미하는 방법을 제안 해주십시오.

미리 감사드립니다.

Answer 1

이 설명서의 mysql_multi_query에있는 예제는 multi_query 기능을 사용하여 여러 값을 얻는 방법을 설명합니다.

if (mysqli_multi_query($link, $query)) { 
    do { 
     /* store first result set */ 
     if ($result = mysqli_store_result($link)) { 
      while ($row = mysqli_fetch_row($result)) { 
       printf("%s\n", $row[0]); 
      } 
      mysqli_free_result($result); 
     } 
     /* print divider */ 
     if (mysqli_more_results($link)) { 
      printf("-----------------\n"); 
     } 
    } while (mysqli_next_result($link)); 
}