mongoDB 中 concat firstName 和 lastName 中不区分大小写的搜索

Question

i want to search fullName by using firstName and lastName fields for that i am using below filter

collections.find({$expr:{$eq:["test test", {$concat:["$firstName", ' ', "$lastName"]}]}})

But this need to be case insensitive filter. Let me know if is there any way to do.

Answer 1

创建不区分大小写的索引： https : //docs.mongodb.com/manual/core/index-case-insensitive