Sql 输入行214结尾的语法错误：o.MatchAdded DESC^

我正试图加入动物收容所数据库中的两个查询，以便将狗的资料与潜在的收养者进行匹配。我一直收到一条错误消息（输入行214:o.MatchAdded DESC^末尾的语法错误），我不明白为什么它在其他地方都能工作，但它却不能工作

我已经挑出了每一个问题（狗方面，申请人方面），他们的工作。我使用这个查询只匹配了1个规范，它是有效的

 SELECT a.sheltercode,
       a.animalname,
       a.animalage,
       (
              SELECT sex
              FROM   lksex
              WHERE  id = a.sex) AS sex,
       (
              SELECT size
              FROM   lksize
              WHERE  id = a.size) AS size,
       (
              SELECT basecolour
              FROM   basecolour
              WHERE  id = a.basecolourid) AS color,
       s.speciesname,
       a.breedname,
       (
              SELECT NAME
              FROM   lksynun
              WHERE  id = a.isgoodwithcats) AS goodwithcats,
       (
              SELECT NAME
              FROM   lksynun
              WHERE  id = a.isgoodwithdogs) AS goodwithdogs,
       (
              SELECT NAME
              FROM   lksynun
              WHERE  id = a.isgoodwithchildren) AS goodwithchildren,
       (
              SELECT NAME
              FROM   lksynun
              WHERE  id = a.ishousetrained) AS housetrained,
       (
              SELECT animaltype
              FROM   animaltype
              WHERE  id = matchanimaltype) AS animaltype,
       (
              SELECT speciesname
              FROM   species
              WHERE  id =matchspecies) AS species,
       (
              SELECT breedname
              FROM   breed
              WHERE  id = matchbreed)AS breed,
       (
              SELECT breedname
              FROM   breed
              WHERE  id = matchbreed2) AS orbreed,
       (
              SELECT NAME
              FROM   lksynun
              WHERE  id = matchgoodwithcats) AS goodwithcats,
       (
              SELECT NAME
              FROM   lksynun
              WHERE  id = matchgoodwithdogs) AS goodwithdogs,
       (
              SELECT NAME
              FROM   lksynun
              WHERE  id = matchgoodwithchildren) AS goodwithchildren,
       (
              SELECT NAME
              FROM   lksynun
              WHERE  id = matchhousetrained) AS housetrained,
       (
                SELECT   o.ownername,
                         o.owneraddress,
                         o.hometelephone,
                         o.worktelephone,
                         o.mobiletelephone,
                         o.matchadded,
                         matchcommentscontain,
                         homecheckareas,
                         additionalflags,
                         (
                                    SELECT     af.value
                                    FROM       additional af
                                    INNER JOIN additionalfield aff
                                    ON         aff.id = af.additionalfieldid
                                    WHERE      aff.fieldname = 'ApplicantDogRestricted'
                                    AND        af.linkid = owner.id) AS applicantdogrestricted,
                         (
                                    SELECT     af.value
                                    FROM       additional af
                                    INNER JOIN additionalfield aff
                                    ON         aff.id = af.additionalfieldid
                                    WHERE      aff.fieldname = 'ApplicantDogHighEnergy'
                                    AND        af.linkid = owner.id) AS applicantdoghighenergy,
                         (
                                    SELECT     af.value
                                    FROM       additional af
                                    INNER JOIN additionalfield aff
                                    ON         aff.id = af.additionalfieldid
                                    WHERE      aff.fieldname = 'ApplicantDogPuppy'
                                    AND        af.linkid = owner.id) AS applicantdogpuppy,
                         (
                                    SELECT     af.value
                                    FROM       additional af
                                    INNER JOIN additionalfield aff
                                    ON         aff.id = af.additionalfieldid
                                    WHERE      aff.fieldname = 'ApplicantWeightRestriction'
                                    AND        af.linkid = owner.id) AS applicantweightrestriction,
                         createdby
                FROM     owner
                WHERE    matchactive = '1'
                AND      matchspecies = '1'
                AND      idcheck = '1'
                AND      additionalflags NOT LIKE '%Fosterer-Dog%'
                ORDER BY o.matchadded DESC 

---

我希望查询结果会是一份报告，按申请日期按降序列出申请者。中间有数据，但最后一列应该是满足搜索请求的狗的列表。

您错过了所有者的别名。在owner之后添加

o

，对于其他表，如

a、s

等，将其命名为别名

别名允许您在同一查询中多次使用表/列时区分表的名称。

什么是

o

（除其他外，

o.matchadded

）？您没有从表

o

中进行选择，也没有名为

o

的表、别名或子查询。与

a

和

s

相同。