如何使用别名在

Question

这是我的代码，但它不工作：

$select = $db->select() 
      ->from(array('p' => 'products'), 'p.product_id') 
      ->columns(array('x' => new Zend_Db_Expr('(SELECT...)'      
         ))) 
      ->where('x = ?', 'value'); 
      // Alternatively use columns('p.product_name') 

我怎样才能检索到x和在主持人它where子句？

这是实际的查询：

SELECT `abstract_submission`.*, 
    (SELECT GROUP_CONCAT(CONCAT(user.firstName, " ", user.lastName) SEPARATOR ",") 
      FROM mamba_event.abstract_submission_reviewer reviewer INNER JOIN     
      mamba_account.account_user user ON user.id = reviewer.userId 
     WHERE reviewer.submissionId = mamba_event.abstract_submission.id AND 
     user.isEnabled = 1) 
    AS `reviewers`, 
    (SELECT GROUP_CONCAT(CONCAT(author.firstName, " ", author.lastName) SEPARATOR ",") 
      FROM mamba_event.abstract_author author INNER JOIN 
      mamba_event.abstract_submission_author map ON author.id = map.authorId 
     WHERE map.submissionId = mamba_event.abstract_submission.id) 
    AS `allAuthors`, 
    (SELECT COUNT(`abstract_paper`.`id`) FROM `mamba_event`.`abstract_paper` 
     WHERE `abstract_paper`.`submissionId` = `abstract_submission`.`id`) 
    AS `numPapers`, 
    (SELECT `paperNumber` FROM `mamba_event`.`abstract_paper` 
     WHERE `abstract_paper`.`submissionId` = `abstract_submission`.`id` AND 
      `abstract_paper`.`currentStatus` = 3 LIMIT 1) 
    AS `acceptedPaperNumber`, 
    (SELECT IF ((COUNT(1) > 0), 'Paper has been uploaded','None') AS hasUploadedPaper 
     FROM `mamba_event`.`abstract_paper` paper 
     WHERE paper.submissionId = `mamba_event`.`abstract_submission`.`id`) 
    AS `hasUploadedPaper`, 
    (SELECT GROUP_CONCAT(CONCAT(user.firstName, " ", user.lastName) SEPARATOR ",") 
     FROM `mamba_event`.`abstract_submission_reviewer` reviewer INNER JOIN 
      `mamba_account`.`account_user` user ON user.id = reviewer.userId 
     WHERE reviewer.submissionId = `mamba_event`.`abstract_submission`.`id` 
     AND reviewer.hasConflictOfInterest = 1 
     AND user.isEnabled = 1) 
    AS `reviewersWithConflict`, 
    (SELECT AVG(`score`) FROM `mamba_event`.`abstract_submission_score` 
     WHERE `submissionId` = `abstract_submission`.`id`) 
    AS `averageScore`, 
    (SELECT AVG(`score`) FROM `mamba_event`.`abstract_paper_score`, `mamba_event`.`abstract_paper` 
     WHERE `abstract_paper_score`.`paperId` = `abstract_paper`.`id` 
      AND `abstract_paper`.`submissionId` = `abstract_submission`.`id` 
      AND (`abstract_paper`.`currentStatus` = 1 
      OR `abstract_paper`.`currentStatus` = 3)) 
     AS `averagePaperScore`, 
     (SELECT AVG(`score`*`scoreWeight`) FROM `mamba_event`.`abstract_submission_score` INNER JOIN 
      `mamba_event`.`abstract_request_criteria` ON `criteriaId` = `abstract_request_criteria`.`id` 
     WHERE `submissionId` = `abstract_submission`.`id`) 
     AS `averageWeightedScore`, 
    (SELECT AVG(`score`*`scoreWeight`) FROM `mamba_event`.`abstract_paper_score` JOIN 
      `mamba_event`.`abstract_paper` INNER JOIN 
      `mamba_event`.`abstract_request_criteria` ON 
      `criteriaId` = `abstract_request_criteria`.`id` 
     WHERE `abstract_paper_score`.`paperId` = `abstract_paper`.`id` 
     AND `abstract_paper`.`submissionId` = `abstract_submission`.`id` 
     AND (`abstract_paper`.`currentStatus` = 1 
     OR `abstract_paper`.`currentStatus` = 3)) 
    AS `averageWeightedPaperScore`, `author`.`email` 
    AS `authorEmail`, `author`.`salutation` 
    AS `authorTitle`, `author`.`firstName` 
    AS `authorFirstName`, `author`.`lastName` 
    AS `authorLastName`, `author`.`organisation` 
    AS `authorOrganisation`, `author`.`position` 
    AS `authorPosition`, `author`.`department` 
    AS `authorDepartment`, `author`.`phone` 
    AS `authorPhone`, `author`.`fax` 
    AS `authorFax`, `address`.`line1` 
    AS `addressLine1`, `address`.`line2` 
    AS `addressLine2`, `address`.`line3` 
    AS `addressLine3`, `address`.`line4` 
    AS `addressLine4`, `address`.`city` 
    AS `addressCity`, `address`.`stateCode` 
    AS `addressStateCode`, `address`.`countryCode` 
    AS `addressCountryCode`, `address`.`postalCode` 
    AS `addressPostalCode`, `author`.`biography` 
    AS `authorBiography`, `request`.`title` 
    AS `request`, `request`.`blindReview`, `request`.`hasCustomTypes`, `file`.`content_type`, `file`.`original_filename` AS `filename`, `author`.`speakerId`, 
    (SELECT GROUP_CONCAT(
          CONCAT('',ifnull(author.firstName,'-'),' ', 
            ifnull(author.lastName,'-'),' 
            (',ifnull(author.organisation,'-'),', 
            ',ifnull(author.authorCountryCode,'-'),')') 
         SEPARATOR ",") 
       FROM `mamba_event`.`abstract_author` author LEFT JOIN 
        `mamba_event`.`abstract_submission_author` sa 
       ON sa.authorId = author.id 
       WHERE sa.submissionId = `abstract_submission`.`id`) 
      AS `authorDetails`, 
      (SELECT GROUP_CONCAT(`field`.`fieldValue`) 
       FROM `mamba_abstract`.`author_field_value_varchar` `field` 
       WHERE `field`.`fieldId` = '2185' 
       AND `field`.`authorId` = `abstract_submission`.`presenterId`) 
      AS `field2185`, 
     (SELECT GROUP_CONCAT(`field`.`fieldValue`) 
       FROM `mamba_abstract`.`author_field_value_varchar` `field` 
       WHERE `field`.`fieldId` = '2335' 
        AND `field`.`fieldValue` = 'BSCS' 
        AND `field`.`authorId` = `abstract_submission`.`presenterId`) 
     AS `field2335`, 
    (SELECT GROUP_CONCAT(`field`.`fieldValue`) 
     FROM `mamba_abstract`.`author_field_value_varchar` `field` 
      WHERE `field`.`fieldId` = '2336' 
      AND `field`.`authorId` = `abstract_submission`.`presenterId`) 
     AS `field2336` FROM `mamba_event`.`abstract_submission` 
INNER JOIN `mamba_event`.`abstract_request` AS `request` ON requestId = request.id 
LEFT JOIN `mamba_account`.`account_file` AS `file` ON fileId = file.id 
INNER JOIN `mamba_event`.`abstract_author` AS `author` ON `presenterId` = `author`.`id` 
LEFT JOIN `mamba_general`.`address` ON `author`.`addressId` = `address`.`id` WHERE ((`abstract_submission`.`isEnabled` = '1') AND (`abstract_submission`.`eventId` = '1893')) AND (`field2335` LIKE "%BSCS%") ORDER BY `request` asc LIMIT 15 

Answer 1

您可以用HAVING做到这一点，像穆罕默德Zeeshan说。

$select = $db->select() 
    ->from(array('p' => 'products'), 'p.product_id') 
    ->columns(array('x' => new Zend_Db_Expr('(SELECT...)'))) 
    ->having('x = ?', 'value');