我正在尝试在Sequelize查询中使用函数JSON_ARRAY_LENGTH()
:
MyModel.query({
where: sequelize.where(
sequelize.fn('JSON_ARRAY_LENGTH', sequelize.col('cues')),
0
)
});
这似乎不起作用。它将生成错误的查询:
SELECT id, title, /* etc. etc. */
FROM MyModel
WHERE
`MyModel`.`attribute` = JSON_ARRAY_LENGTH(`cues)` AND
`MyModel`.`comparator` = '=' AND
`MyModel`.`logic` = 0;
attribute
,comparator
和logic
这些东西是什么?如何关闭它?
documentation似乎支持我在做什么。例如:
Post.findAll({
where: sequelize.where(sequelize.fn('char_length', sequelize.col('status')), 6)
});
// SELECT * FROM post WHERE char_length(status) = 6;
任何想法都会受到赞赏。谢谢!
答案 0 :(得分:0)
似乎我偶然发现了一个错误:
https://github.com/sequelize/sequelize/issues/6440
此问题已在较新的版本中修复:
https://github.com/sequelize/sequelize/pull/9730/commits/3b2972db2c494c8a4118a7e6c16aad0fc2e0eebe
目前的解决方法是用AND包裹我的查询:
MyModel.query({
where: {
[sequelize.Op.and]: sequelize.where(
sequelize.fn('JSON_ARRAY_LENGTH', sequelize.col('cues')),
0
)
}
});