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이상한 문제가있어서 원인을 파악하는 데 도움이 필요합니다. 지금까지 나는 증상을 관찰 할 수만있었습니다. "보이는 것"은 MySQL이 처음 "LEFT JOIN"전에 개행 문자가 있는지 여부에 따라 다른 쿼리를 실행한다는 것입니다. 내가 www.xeround.com에서 제공하는 MySQL 데이터베이스 인스턴스에 대한 쿼리를 실행하고공백이 MySQL Left Join에 영향을주고 NULL 값을 반환하는 이유는 무엇입니까?
:
여기 내 설정입니다. 나는 Kohana 프레임 워크, 버전 3.0을 사용하고 있습니다. Lighttpd에서 PHP 5.3.3 FastCGI를 실행하고 있습니다. 나는 MySQL의 기본 드라이버로 PHP를 컴파일 :
--with-mysql을 = mysqlnd --with-mysqli = mysqlnd --with-PDO-mysql을 = mysqlnd
내가 기본 Kohana 3 MySQL 데이터베이스 드라이버를 사용하고 및 QueryBuilder.
PHP 코드를 건너 뛰고 SQL을 공유하기 때문에 문제가 될 것 같습니다. 이 같은 결과를 반환
이SELECT `fieldreps`.`user_id` AS `fieldreps.user_id`, `fieldreps`.`availability_id` AS `fieldreps.availability_id`, `fieldreps`.`applicant_type` AS `fieldreps.applicant_type`, `fieldreps`.`license_number` AS `fieldreps.license_number`, `fieldreps`.`license_exp` AS `fieldreps.license_exp`, `fieldreps`.`license_state` AS `fieldreps.license_state`, `fieldreps`.`car` AS `fieldreps.car`, `fieldreps`.`authorized_worker` AS `fieldreps.authorized_worker`, `fieldreps`.`restrictions` AS `fieldreps.restrictions`, `fieldreps`.`night` AS `fieldreps.night`, `fieldreps`.`day` AS `fieldreps.day`, `fieldreps`.`longer` AS `fieldreps.longer`, `fieldreps`.`commitment` AS `fieldreps.commitment`, `fieldreps`.`travel_metro` AS `fieldreps.travel_metro`, `fieldreps`.`travel_states` AS `fieldreps.travel_states`, `fieldreps`.`big_employee` AS `fieldreps.big_employee`, `fieldreps`.`employed` AS `fieldreps.employed`, `fieldreps`.`retail` AS `fieldreps.retail`, `fieldreps`.`status` AS `fieldreps.status`, `fieldreps`.`start` AS `fieldreps.start`, `fieldreps`.`sales` AS `fieldreps.sales`, `fieldreps`.`study` AS `fieldreps.study`, `fieldreps`.`relevant` AS `fieldreps.relevant`, `fieldreps`.`experience` AS `fieldreps.experience`, `fieldreps`.`claims` AS `fieldreps.claims`, `fieldreps`.`education` AS `fieldreps.education`, `fieldreps`.`degree_details` AS `fieldreps.degree_details`, `fieldreps`.`degree_institution` AS `fieldreps.degree_institution`, `fieldreps`.`other_training` AS `fieldreps.other_training`, `fieldreps`.`jobs` AS `fieldreps.jobs`, `fieldreps`.`current_training` AS `fieldreps.current_training`, `fieldreps`.`interested` AS `fieldreps.interested`, `fieldreps`.`achievements` AS `fieldreps.achievements`, `fieldreps`.`passions` AS `fieldreps.passions`, `fieldreps`.`ambitions` AS `fieldreps.ambitions`, `fieldreps`.`max_travel_time` AS `fieldreps.max_travel_time`, `fieldreps`.`creation_time` AS `fieldreps.creation_time`, `fieldreps`.`resume` AS `fieldreps.resume`, `users`.`user_id` AS `users.user_id`, `users`.`email` AS `users.email`, `users`.`name` AS `users.name`, `users`.`password` AS `users.password`, `users`.`given_name` AS `users.given_name`, `users`.`title` AS `users.title`, `users`.`nationality` AS `users.nationality`, `availabilities`.`availability_id` AS `availabilities.availability_id`, `availabilities`.`fieldrep_id` AS `availabilities.fieldrep_id`, `availabilities`.`mon_start` AS `availabilities.mon_start`, `availabilities`.`mon_end` AS `availabilities.mon_end`, `availabilities`.`tue_start` AS `availabilities.tue_start`, `availabilities`.`tue_end` AS `availabilities.tue_end`, `availabilities`.`wed_start` AS `availabilities.wed_start`, `availabilities`.`wed_end` AS `availabilities.wed_end`, `availabilities`.`thur_start` AS `availabilities.thur_start`, `availabilities`.`thur_end` AS `availabilities.thur_end`, `availabilities`.`fri_start` AS `availabilities.fri_start`, `availabilities`.`fri_end` AS `availabilities.fri_end`, `availabilities`.`sat_start` AS `availabilities.sat_start`, `availabilities`.`sat_end` AS `availabilities.sat_end`, `availabilities`.`sun_start` AS `availabilities.sun_start`, `availabilities`.`sun_end` AS `availabilities.sun_end` FROM `fieldreps` AS `fieldreps` LEFT JOIN `users` ON (`fieldreps`.`user_id` = `users`.`user_id`) LEFT JOIN `availabilities` ON (`fieldreps`.`availability_id` = `availabilities`.`availability_id`)
: :이 QueryBuilder이 쿼리 구축 끝 (. 나는 대부분의 필드가 짧고 적은 개인을 유지하기 위해 Fieldreps 테이블에서 반환 제거)를
[0] => Array
(
[fieldreps.user_id] => 1f01f4c2-43fd-550d-a53d-1f191786ebad
[fieldreps.availability_id] => e31b0773-ecba-41d1-8ebb-7ac718496456
[fieldreps.car] => Yes
[fieldreps.authorized_worker] => Yes
[fieldreps.restrictions] => Has Restrictions: No
[fieldreps.night] => Yes
[fieldreps.day] => Yes
[fieldreps.longer] => Yes
[users.user_id] => 1f01f4c2-43fd-550d-a53d-1f191786ebad
[users.email] => [email protected]
[users.name] => Jones
[users.password] =>
[users.given_name] => Fred
[users.title] => Miss
[users.nationality] =>
[availabilities.availability_id] =>
[availabilities.fieldrep_id] =>
[availabilities.mon_start] =>
[availabilities.mon_end] =>
[availabilities.tue_start] =>
[availabilities.tue_end] =>
[availabilities.wed_start] =>
[availabilities.wed_end] =>
[availabilities.thur_start] =>
[availabilities.thur_end] =>
[availabilities.fri_start] =>
[availabilities.fri_end] =>
[availabilities.sat_start] =>
[availabilities.sat_end] =>
[availabilities.sun_start] =>
[availabilities.sun_end] =>
)
[1] => Array
(
[fieldreps.user_id] => 812c3a9f-d7d8-565a-a886-1b182753dd41
[fieldreps.availability_id] =>
[fieldreps.car] => 1
[fieldreps.authorized_worker] => 1
[fieldreps.restrictions] =>
[fieldreps.night] => 1
[fieldreps.day] => 1
[fieldreps.longer] => 1
[users.user_id] => 812c3a9f-d7d8-565a-a886-1b182753dd41
[users.email] => [email protected]
[users.name] => Smith
[users.password] =>
[users.given_name] => Jill
[users.title] =>
[users.nationality] =>
[availabilities.availability_id] =>
[availabilities.fieldrep_id] =>
[availabilities.mon_start] =>
[availabilities.mon_end] =>
[availabilities.tue_start] =>
[availabilities.tue_end] =>
[availabilities.wed_start] =>
[availabilities.wed_end] =>
[availabilities.thur_start] =>
[availabilities.thur_end] =>
[availabilities.fri_start] =>
[availabilities.fri_end] =>
[availabilities.sat_start] =>
[availabilities.sat_end] =>
[availabilities.sun_start] =>
[availabilities.sun_end] =>
내가 처음 LEFT 직전에 개행 문자를 삽입 할 때, 다음과 같이 가입 :
SELECT `fieldreps`.`user_id` AS `fieldreps.user_id`, `fieldreps`.`availability_id` AS `fieldreps.availability_id`, `fieldreps`.`applicant_type` AS `fieldreps.applicant_type`, `fieldreps`.`license_number` AS `fieldreps.license_number`, `fieldreps`.`license_exp` AS `fieldreps.license_exp`, `fieldreps`.`license_state` AS `fieldreps.license_state`, `fieldreps`.`car` AS `fieldreps.car`, `fieldreps`.`authorized_worker` AS `fieldreps.authorized_worker`, `fieldreps`.`restrictions` AS `fieldreps.restrictions`, `fieldreps`.`night` AS `fieldreps.night`, `fieldreps`.`day` AS `fieldreps.day`, `fieldreps`.`longer` AS `fieldreps.longer`, `fieldreps`.`commitment` AS `fieldreps.commitment`, `fieldreps`.`travel_metro` AS `fieldreps.travel_metro`, `fieldreps`.`travel_states` AS `fieldreps.travel_states`, `fieldreps`.`big_employee` AS `fieldreps.big_employee`, `fieldreps`.`employed` AS `fieldreps.employed`, `fieldreps`.`retail` AS `fieldreps.retail`, `fieldreps`.`status` AS `fieldreps.status`, `fieldreps`.`start` AS `fieldreps.start`, `fieldreps`.`sales` AS `fieldreps.sales`, `fieldreps`.`study` AS `fieldreps.study`, `fieldreps`.`relevant` AS `fieldreps.relevant`, `fieldreps`.`experience` AS `fieldreps.experience`, `fieldreps`.`claims` AS `fieldreps.claims`, `fieldreps`.`education` AS `fieldreps.education`, `fieldreps`.`degree_details` AS `fieldreps.degree_details`, `fieldreps`.`degree_institution` AS `fieldreps.degree_institution`, `fieldreps`.`other_training` AS `fieldreps.other_training`, `fieldreps`.`jobs` AS `fieldreps.jobs`, `fieldreps`.`current_training` AS `fieldreps.current_training`, `fieldreps`.`interested` AS `fieldreps.interested`, `fieldreps`.`achievements` AS `fieldreps.achievements`, `fieldreps`.`passions` AS `fieldreps.passions`, `fieldreps`.`ambitions` AS `fieldreps.ambitions`, `fieldreps`.`max_travel_time` AS `fieldreps.max_travel_time`, `fieldreps`.`creation_time` AS `fieldreps.creation_time`, `fieldreps`.`resume` AS `fieldreps.resume`, `users`.`user_id` AS `users.user_id`, `users`.`email` AS `users.email`, `users`.`name` AS `users.name`, `users`.`password` AS `users.password`, `users`.`given_name` AS `users.given_name`, `users`.`title` AS `users.title`, `users`.`nationality` AS `users.nationality`, `availabilities`.`availability_id` AS `availabilities.availability_id`, `availabilities`.`fieldrep_id` AS `availabilities.fieldrep_id`, `availabilities`.`mon_start` AS `availabilities.mon_start`, `availabilities`.`mon_end` AS `availabilities.mon_end`, `availabilities`.`tue_start` AS `availabilities.tue_start`, `availabilities`.`tue_end` AS `availabilities.tue_end`, `availabilities`.`wed_start` AS `availabilities.wed_start`, `availabilities`.`wed_end` AS `availabilities.wed_end`, `availabilities`.`thur_start` AS `availabilities.thur_start`, `availabilities`.`thur_end` AS `availabilities.thur_end`, `availabilities`.`fri_start` AS `availabilities.fri_start`, `availabilities`.`fri_end` AS `availabilities.fri_end`, `availabilities`.`sat_start` AS `availabilities.sat_start`, `availabilities`.`sat_end` AS `availabilities.sat_end`, `availabilities`.`sun_start` AS `availabilities.sun_start`, `availabilities`.`sun_end` AS `availabilities.sun_end` FROM `fieldreps` AS `fieldreps`
LEFT JOIN `users` ON (`fieldreps`.`user_id` = `users`.`user_id`) LEFT JOIN `availabilities` ON (`fieldreps`.`availability_id` = `availabilities`.`availability_id`)
나는 지금 내가 원하는 결과를 얻을 :
[0] => Array
(
[fieldreps.user_id] => 1f01f4c2-43fd-550d-a53d-1f191786ebad
[fieldreps.availability_id] => e31b0773-ecba-41d1-8ebb-7ac718496456
[fieldreps.car] => Yes
[fieldreps.authorized_worker] => Yes
[fieldreps.restrictions] => Has Restrictions: No
[fieldreps.night] => Yes
[fieldreps.day] => Yes
[fieldreps.longer] => Yes
[users.user_id] => 1f01f4c2-43fd-550d-a53d-1f191786ebad
[users.email] => [email protected]
[users.name] => Jones
[users.password] =>
[users.given_name] => Fred
[users.title] => Miss
[users.nationality] =>
[availabilities.availability_id] => e31b0773-ecba-41d1-8ebb-7ac718496456
[availabilities.fieldrep_id] => 1f01f4c2-43fd-550d-a53d-1f191786ebad
[availabilities.mon_start] => 540
[availabilities.mon_end] => 1020
[availabilities.tue_start] => 540
[availabilities.tue_end] => 1020
[availabilities.wed_start] => 540
[availabilities.wed_end] => 1020
[availabilities.thur_start] => 540
[availabilities.thur_end] => 1020
[availabilities.fri_start] => 540
[availabilities.fri_end] => 1020
[availabilities.sat_start] =>
[availabilities.sat_end] =>
[availabilities.sun_start] =>
[availabilities.sun_end] =>
)
[1] => Array
(
[fieldreps.user_id] => 812c3a9f-d7d8-565a-a886-1b182753dd41
[fieldreps.availability_id] =>
[fieldreps.car] => 1
[fieldreps.authorized_worker] => 1
[fieldreps.restrictions] =>
[fieldreps.night] => 1
[fieldreps.day] => 1
[fieldreps.longer] => 1
[users.user_id] => 812c3a9f-d7d8-565a-a886-1b182753dd41
[users.email] => [email protected]
[users.name] => Smith
[users.password] =>
[users.given_name] => Jill
[users.title] =>
[users.nationality] =>
[availabilities.availability_id] =>
[availabilities.fieldrep_id] =>
[availabilities.mon_start] =>
[availabilities.mon_end] =>
[availabilities.tue_start] =>
[availabilities.tue_end] =>
[availabilities.wed_start] =>
[availabilities.wed_end] =>
[availabilities.thur_start] =>
[availabilities.thur_end] =>
[availabilities.fri_start] =>
[availabilities.fri_end] =>
[availabilities.sat_start] =>
[availabilities.sat_end] =>
[availabilities.sun_start] =>
[availabilities.sun_end] =>
사용자 테이블의 LEFT JOIN은 두 시나리오에서 모두 잘 작동합니다. 나는 또한 첫 번째가 아닌 두 번째 LEFT JOIN 전에 개행을 추가하려고 시도했다. 원하지 않는 결과. 내가 고칠 수있는 유일한 방법은 처음 LEFT JOIN 앞에 줄 바꿈을하는 것입니다. QueryBuilder에 의해 작성되고 MySQL로 보내진 질의는 항상 길고, 한 줄짜리, 최소한의 공백 줄입니다 ... 새 줄은 없습니다! 이 문제가 발생한 것은 이번이 처음입니다. 첫 번째 LEFT JOIN 전에 개행을 배치해야한다는 요구를 믿을 수 없습니다.
내 질문은 이러한 점에 귀결 :
- 이 이런 식으로 일이있을 건가요? (쿼리 결과에 영향을 미치는 공백)
- 내가 원하는 결과를 얻는 가장 좋은 방법은 무엇입니까?
저는 SQL 전문가가 아니기 때문에이 질문을하지 않아도됩니다. 나는 내가 바라보고있는 것이 있다는 것을 확신합니다.
는조나단에게 감사
생각처럼 내 문제는 바로 내 앞에 있었다