MONGOC_UPDATE_FLAGS_T(3)

🦋 MONGOC_UPDATE_FLAGS_T(3) — libmongoc, bestie edition ✨

Okay so this is the whole flags for update operations situation, and honestly? It's a vibe. This is libmongoc lore and we're getting into it. 🌸

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✨ SYNOPSIS ✨

Here's the tea, literally copy-pasted because code does NOT get the group-chat treatment:

typedef enum {
   MONGOC_UPDATE_NONE = 0,
   MONGOC_UPDATE_UPSERT = 1 << 0,
   MONGOC_UPDATE_MULTI_UPDATE = 1 << 1,
} mongoc_update_flags_t;

#define MONGOC_UPDATE_NO_VALIDATE (1U << 31)

No notes, she ate. 💅

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💖 DESCRIPTION 💖

So these flags correspond to the MongoDB wire protocol — like, they're the actual bits talking to the server, no cap. You can bitwise or'd them together however you want (yes, or'd, that's the actual word, we love a slightly cursed grammar moment 🫶).

The way that they work is they let you modify the way an update is performed in the MongoDB server. That's it, that's the whole job. Main character energy for a tiny enum. 👑

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🎀 FLAG VALUES 🎀

Okay bestie, here's the roster, one bullet at a time because tables are not the moment:

• MONGOC_UPDATE_NONE — literally no update flags set. The blank slate. The "I'm just here" of flags. 🍓
• MONGOC_UPDATE_UPSERT — tells the server whether an upsert should be performed. Yes upsert. Yes it's a real word here.
• MONGOC_UPDATE_MULTI_UPDATE — for when more than a single matching document should be updated. And listen, the default is lowkey stingy: by default only the first document is updated. So if you wanted everything touched, you gotta say so. 🙈
• MONGOC_UPDATE_NO_VALIDATE — do not perform client side BSON validations when performing an update. Super useful if you already know your BSON documents are valid, and honestly if you know, you know — iykyk. ⭐

Real talk though: that last one is defined as #define MONGOC_UPDATE_NO_VALIDATE (1U << 31), so it lives way out there in the high bits. Not a "fix", just a fact. 💀

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🌈 AUTHOR 🌈

MongoDB, Inc — iconic, no further questions. 👑

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🧚 COPYRIGHT 🧚

2009-present, MongoDB, Inc. — protecting the brand since '09, periodt. 💜

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Okay that's the whole page, you're so welcome, go update something responsibly. 🌸🦋

Sign-off realness: this was version 2.5.6, dated Oct 09, 2026, from the MONGOC_UPDATE_FLAGS_T(3) page in the libmongoc manual — mwah, catch you in the next one 💅✨