ZREVRANGEBYLEX(3valkey)

📦
version 9.0.6 · 2 versions
, in fedora 44

💅 ZREVRANGEBYLEX 💅

okay bestie, so this is a page from the Valkey Command Manual, and we're talking about zrevrangebylex(3valkey) — yes the whole name is a mouthful, no I will not be shortening it, it's iconic that way. sit down, grab a strawberry, let's go 🍓

✨ NAME ✨

zrevrangebylex — returns members in a sorted set within a lexicographical range, but in reverse order. that's it, that's the girl 🎀

🦋 SYNOPSIS 🦋

ZREVRANGEBYLEX key max min [LIMIT offset count]

look at her. four things, one optional duo. she's lowkey elegant.

🌸 DESCRIPTION 🌸

okay so here's the vibe: when literally every element in a sorted set got inserted with the same score — the little trick to force lexicographical ordering — this command returns all the elements in the sorted set at key with a value between max and min. the whole squad, in reverse. 💖

and apart from that reversed ordering? ZREVRANGEBYLEX is basically ZRANGEBYLEX's twin. same energy, opposite direction. fr fr.

🧚 Alternative

ZRANGE with the REV and BYLEX arguments. yes bestie, that's the modern shortcut. iykyk 👑

💌 REPLY 💌

valkey-protocol(7) Array reply: a list of the members in the specified score range. so you get a whole lil array back, all your little members lined up 💅

⭐ COMPLEXITY ⭐

O(log(N)+M) — where N is the number of elements in the sorted set and M is the number of elements being returned.

but listen: if M is constant (like, you're always asking for the first 10 elements with LIMIT), you can consider it O(log(N)). slay. ✨

🔥 ACL CATEGORIES 🔥

  • @read
  • @slow
  • @sortedset

🎀 HISTORY 🎀

  • Available since: 2.8.9

she's been here a minute, and she's aged like fine wine 🍷

🌈 EXAMPLES 🌈

127.0.0.1:6379> ZADD myzset 0 a 0 b 0 c 0 d 0 e 0 f 0 g
(integer) 7
127.0.0.1:6379> ZREVRANGEBYLEX myzset [c -
1) "c"
2) "b"
3) "a"
127.0.0.1:6379> ZREVRANGEBYLEX myzset (c -
1) "b"
2) "a"
127.0.0.1:6379> ZREVRANGEBYLEX myzset (g [aaa
1) "f"
2) "e"
3) "d"
4) "c"
5) "b"

see how [ means inclusive and ( means exclusive? the way that [c gives you "c" and (c does not?? chef's kiss. main character behavior from a bracket. 💀

👑 SEE ALSO 👑

bzmpop(3valkey), bzpopmax(3valkey), bzpopmin(3valkey), zadd(3valkey), zcard(3valkey), zcount(3valkey), zdiff(3valkey), zdiffstore(3valkey), zincrby(3valkey), zinter(3valkey), zintercard(3valkey), zinterstore(3valkey), zlexcount(3valkey), zmpop(3valkey), zmscore(3valkey), zpopmax(3valkey), zpopmin(3valkey), zrandmember(3valkey), zrange(3valkey), zrangebylex(3valkey), zrangebyscore(3valkey), zrangestore(3valkey), zrank(3valkey), zrem(3valkey), zremrangebylex(3valkey), zremrangebyrank(3valkey), zremrangebyscore(3valkey), zrevrange(3valkey), zrevrangebyscore(3valkey), zrevrank(3valkey), zscan(3valkey), zscore(3valkey), zunion(3valkey), zunionstore(3valkey)

that's the whole friend group right there. go read them all, they're all obsessed with you 🫶

okay that's the whole page bestie, mwah 💜 this was Valkey Command Manual, version 9.0.0, dated 2025-10-21, and yes i memorized all of that for you. periodt. 💅✨🦋

📦 where this page comes from