方言:postgres
数据库版本:@latest
Sequelize 版本:@latest
我正在尝试找出如何使用关联模型。我有 3 个模型: post
、 postCity
和 region
。它们有以下关系:postCity (post_id, region_id)
关联到 post (post_id)
和 region (region_id)
。我正在使用这样的搜索功能:
include: [
{
model: models.postCity,
include:[{model:models.region}],
attributes: [[models.sequelize.fn('count', 'post_id'), 'count']],
}
],
where: {
$or: [
{
"create_by" : {$not: 67}
},
{
// "postCities.region_name":{$iLike: "%Guangazhou2%"}
},
{
"description":{$iLike: "%India%"}
}
]
}
这导致:
SELECT "post"."post_id", "post"."description", "post"."create_by",
"post"."create_time", "post"."update_time", "post"."country_id",
"postCities"."post_id" AS "postCities.post_id",
"postCities"."region_id" AS "postCities.region_id",
"postCities"."order_no" AS "postCities.order_no",
"postCities.region"."region_id" AS "postCities.region.region_id",
"postCities.region"."region_name" AS "postCities.region.region_name",
"postCities.region"."country_id" AS "postCities.region.country_id",
"postCities.region"."province_id" AS "postCities.region.province_id"
FROM "t_post" AS "post"
LEFT OUTER JOIN "t_post_city" AS "postCities"
ON "post"."post_id" = "postCities"."post_id"
LEFT OUTER JOIN "t_region" AS "postCities.region"
ON "postCities"."region_id" = "postCities.region"."region_id"
WHERE ("post"."create_by" != 67 OR "post"."description" ILIKE '%India%');
当我取消注释
"postCities.region_name":{$iLike: "%Guangazhou2%"}
时,我收到此错误column post.postCities.region_name does not exist
我只是喜欢我的查询是这样的
... WHERE ("post"."create_by" != 67
OR "post"."description" ILIKE '%India%'
OR "postCities.region_name" ILIKE: "%Guangazhou2%")
更新
我也尝试包含
[{model:models.region, where:{"region_name":{$iLike: "%Guangazhou2%"}}}]
但这并没有给我合适的结果。
最佳答案
为了向包含的表添加条件,您应该使用 $
符号包装条件,如下所示:
include: [{
model: models.postCity,
include:[{model:models.region}],
attributes: [[models.sequelize.fn('count', 'post_id'), 'count']],
}],
where: {
$or: [{
"create_by" : {$not: 67}
}, {
"$postCities.region.region_name$":{$iLike: "%Guangazhou2%"}
}, {
"description":{$iLike: "%India%"}
}]
}
关于sql - 使用模型关联查找,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/41010342/