{
  "schema_version": 2,
  "id": "commands/substr",
  "title": "SUBSTR",
  "url": "https://redis.io/docs/latest/commands/substr/",
  "summary": "Returns a substring from a string value.",
  "since": "1.0.0",
  "tags": [
    "docs",
    "develop",
    "stack",
    "oss",
    "rs",
    "rc",
    "oss",
    "kubernetes",
    "clients"
  ],
  "last_updated": "2026-07-24T11:07:00+02:00",
  "page_type": "content",
  "content_hash": "c1eeb435975c949092d367f71df1c4d3304fc6f9c66ccf7297a9e6b912e2136d",
  "sections": [
    {
      "id": "overview",
      "title": "Overview",
      "role": "overview",
      "text": "Returns the substring of the string value stored at `key`, determined by the\noffsets `start` and `end` (both are inclusive).\nNegative offsets can be used in order to provide an offset starting from the end\nof the string.\nFor example, -1 is the last character, -2 is the penultimate character, and so on.\n\nThe function handles out of range requests by limiting the resulting range to\nthe actual length of the string."
    },
    {
      "id": "required-arguments",
      "title": "Required arguments",
      "role": "content",
      "text": "<details open><summary><code>key</code></summary>\n\nThe name of the key.\n\n</details>\n\n<details open><summary><code>start</code></summary>\n\nThe start offset, zero-based. A negative value counts from the end of the string.\n\n</details>\n\n<details open><summary><code>end</code></summary>\n\nThe end offset, zero-based and inclusive. A negative value counts from the end of the string.\n\n</details>"
    },
    {
      "id": "examples",
      "title": "Examples",
      "role": "example",
      "text": "redis> SET mykey \"This is a string\"\nOK\nredis> GETRANGE mykey 0 3\n\"This\"\nredis> GETRANGE mykey -3 -1\n\"ing\"\nredis> GETRANGE mykey 0 -1\n\"This is a string\"\nredis> GETRANGE mykey 10 100\n\"string\""
    },
    {
      "id": "redis-software-and-redis-cloud-compatibility",
      "title": "Redis Software and Redis Cloud compatibility",
      "role": "content",
      "text": "| Redis<br />Software | Redis<br />Cloud | <span style=\"min-width: 9em; display: table-cell\">Notes</span> |\n|:----------------------|:-----------------|:------|\n| <span title=\"Not supported\">&#x274c; Standard</span><br /><span title=\"Not supported\"><nobr>&#x274c; Active-Active</nobr></span> | <span title=\"Not supported\">&#x274c; Standard</span><br /><span title=\"Not supported\"><nobr>&#x274c; Active-Active</nobr></span> | Deprecated as of Redis v2.0.0. |"
    },
    {
      "id": "return-information",
      "title": "Return information",
      "role": "returns",
      "text": "**RESP2:**\n\n[Bulk string reply](../../develop/reference/protocol-spec#bulk-strings): the substring of the string value stored at key, determined by the offsets start and end (both are inclusive).\n\n**RESP3:**\n\n[Bulk string reply](../../develop/reference/protocol-spec#bulk-strings): the substring of the string value stored at key, determined by the offsets start and end (both are inclusive)."
    }
  ],
  "examples": []
}