或Firestore查询中的逻辑操作 [英] OR Logical operation in Firestore Query

问题描述

有没有办法在firestore查询中应用OR操作，如：

Is there any way to apply OR operation in firestore queries like:

if（name ==Jhon|| lastname ==James）{
然后执行此操作
}

if (name == "Jhon" || lastname == "James") { then do this }

推荐答案

目前看来Firestore不支持析取。

It currently seems that Firestore does not support disjunctions.

解决方法是合并查询结果 query.whereEqual（name，John）和 query.whereEqual （姓詹姆斯）。

Workaround would be to merge results of queries query.whereEqual(name, John) and query.whereEqual(surname, James).

请记住，从结果中你必须删除重复的那些，在两种情况下评估为真的那些。

Keep in mind, that from the result you have to delete the duplicated ones, those which are evaluated as true in both conditions.

这篇关于或Firestore查询中的逻辑操作的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！