Question

我在查询中有一些奇怪的行为，我在一个包含中使用了select策略。

基本上，如果存在，则使用所请求的语言获取Sitedescription的内容（如果存在），如果不存在，则以英语提供，如果不存在，则使用法语：

$query = $this->Sites->find()
->contain(
    [
        'Sitedescriptions' => [
            'strategy' => 'select',
            'queryBuilder' => function ($q) use ($reqLanguage_id, $reqLanguageFr_id, $reqLanguageEn_id) {
                return $q
                    ->select(['isGivenLanguage' => $q->newExpr()->eq('language_id', $reqLanguage_id), 'site_id', 'language_id')
                    ->where (['language_id IN ' => [$reqLanguage_id, $reqLanguageFr_id, $reqLanguageEn_id]])
                    ->order(['isGivenLanguage' => 'DESC', 'language_id' => 'DESC'])
                    ->limit(1)
                    ;
                 },
            ],
    ])
;

这个工作得很好。现在我想要完全相同的查询，但我还想从sitedescription，'paragraph_0'再获得一个字段。当然是一个现有的领域。

$query = $this->Sites->find()
->contain(
    [
        'Sitedescriptions' => [
            'strategy' => 'select',
            'queryBuilder' => function ($q) use ($reqLanguage_id, $reqLanguageFr_id, $reqLanguageEn_id) {
                return $q
                    ->select(['isGivenLanguage' => $q->newExpr()->eq('language_id', $reqLanguage_id), 'site_id', 'language_id', 'paragraph_0')
                    ->where (['language_id IN ' => [$reqLanguage_id, $reqLanguageFr_id, $reqLanguageEn_id]])
                    ->order(['isGivenLanguage' => 'DESC', 'language_id' => 'DESC'])
                    ->limit(1)
                    ;
                 },
            ],
    ])
;

在select（）中添加此字段会使查询返回一个空的Sitedescription数组。

此处提供了查询和输出https://gist.github.com/caBBAlainB/a721eebb3e8aa04a3506。

关于附加字段出现问题的原因有什么想法吗？

修改为第二种情况添加生成的sql查询，其中请求了paragraph_0：

有限制（1）：

SHOW FULL COLUMNS FROM `sitedescriptions`  
SHOW INDEXES FROM `sitedescriptions`  
SELECT * FROM information_schema.key_column_usage AS kcu INNER JOIN information_schema.referential_constraints AS rc ON (kcu.CONSTRAINT_NAME = rc.CONSTRAINT_NAME) WHERE kcu.TABLE_SCHEMA = 'modulwoomobtst' AND kcu.TABLE_NAME = 'sitedescriptions' and rc.TABLE_NAME = 'sitedescriptions'  
SHOW TABLE STATUS WHERE Name = 'sitedescriptions'  
SELECT (language_id = '1') AS `isGivenLanguage`, Sitedescriptions.id AS `Sitedescriptions__id`, Sitedescriptions.site_id AS `Sitedescriptions__site_id`, Sitedescriptions.language_id AS `Sitedescriptions__language_id`, Sitedescriptions.paragraph_0 AS `Sitedescriptions__paragraph_0` FROM sitedescriptions Sitedescriptions WHERE (Sitedescriptions.site_id in (63,64,827,828,838,841,849,859,866,908,1034,1116) AND language_id in (1,1,9)) ORDER BY isGivenLanguage DESC, language_id DESC

无限制（1）：

SHOW FULL COLUMNS FROM `sitedescriptions`  
SHOW INDEXES FROM `sitedescriptions`  
SELECT * FROM information_schema.key_column_usage AS kcu INNER JOIN information_schema.referential_constraints AS rc ON (kcu.CONSTRAINT_NAME = rc.CONSTRAINT_NAME) WHERE kcu.TABLE_SCHEMA = 'modulwoomobtst' AND kcu.TABLE_NAME = 'sitedescriptions' and rc.TABLE_NAME = 'sitedescriptions'  
SHOW TABLE STATUS WHERE Name = 'sitedescriptions'  
SELECT (language_id = '1') AS `isGivenLanguage`, Sitedescriptions.id AS `Sitedescriptions__id`, Sitedescriptions.site_id AS `Sitedescriptions__site_id`, Sitedescriptions.language_id AS `Sitedescriptions__language_id`, Sitedescriptions.paragraph_0 AS `Sitedescriptions__paragraph_0` FROM sitedescriptions Sitedescriptions WHERE (Sitedescriptions.site_id in (63,64,827,828,838,841,849,859,866,908,1034,1116) AND language_id in (1,1,9)) ORDER BY isGivenLanguage DESC, language_id DESC

据我所知，两个请求都是相同的，但结果却不同。

“选择”策略中的奇怪行为

0 个答案: