如何从Go查询仅MongoDB大小写不敏感[重复]

Question

This question already has an answer here:

• Regex to find whole word in text but case insensitive 1 answer
• MongoDB: Is it possible to make a case-insensitive query? 23 answers

I tried to query:

bson.M{"name": bson.M{"$regex": bson.RegEx{Pattern: "sophia", Options: "i"}} 

but, it also query out which part matched with "sophia".

I only want to query out the items which case insensitive.

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