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Redis · Command

SUNION

SUNION returns all distinct members found across two or more Redis sets. It reads the input sets and does not store the result.

Last updated

Since
1.0.0

Syntax

SUNION key [key ...]

In-depth API docs are only for subscribers: parameters, examples, common mistakes and interview practice.

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  • SUNIONCARD
  • SUNIONSTORE
  • SADD
  • SINTER
  • SDIFF

Source: SUNION | Docs. Checked 2026-11-03.