JSON.STRAPPEND

Append the json-string values to the string at path

Examples

Required arguments

<details open><summary><code>key</code></summary>

is key to modify.

</details> <details open><summary><code>value</code></summary>

is value to append to one or more strings.

{{% alert title="About using strings with JSON commands" color="warning" %}} To specify a string as an array value to append, wrap the quoted string with an additional set of single quotes. Example: '"silver"'. For more detailed use, see Examples. {{% /alert %}}

</details>

Optional arguments

<details open><summary><code>path</code></summary>

is JSONPath to specify. Default is root $.

</details>

Examples

{{< highlight bash >}} redis> JSON.SET doc $ '{"a":"foo", "nested": {"a": "hello"}, "nested2": {"a": 31}}' OK redis> JSON.STRAPPEND doc $..a '"baz"'

1. (integer) 6
2. (integer) 8
3. (nil) redis> JSON.GET doc $ "[{"a":"foobaz","nested":{"a":"hellobaz"},"nested2":{"a":31}}]" {{< / highlight >}}

Redis Software and Redis Cloud compatibility

| Redis Software | Redis Cloud | <span style="min-width: 9em; display: table-cell">Notes</span> | |:----------------------|:-----------------|:------| | <span title="Supported">✅ Supported</span> | <span title="Supported">✅ Flexible & Annual</span> <span title="Supported">✅ Free & Fixed</nobr></span> | |

Return information

{{< multitabs id="json-strappend-return-info" tab1="RESP2" tab2="RESP3" >}}

With $-based path argument: [Array reply]({{< relref "/develop/reference/protocol-spec#arrays" >}}) of [integer replies]({{< relref "/develop/reference/protocol-spec#integers" >}}) or [null replies]({{< relref "/develop/reference/protocol-spec#nulls" >}}), where each element is the string's new length, or null if the matching value is not a string.

With .-based path argument: [Integer reply]({{< relref "/develop/reference/protocol-spec#integers" >}}) representing the string's new length, or [null reply]({{< relref "/develop/reference/protocol-spec#nulls" >}}) if the matching value is not a string.

-tab-sep-

With $-based path argument (default): [Array reply]({{< relref "/develop/reference/protocol-spec#arrays" >}}) of [integer replies]({{< relref "/develop/reference/protocol-spec#integers" >}}) or [null replies]({{< relref "/develop/reference/protocol-spec#nulls" >}}), where each element is the string's new length, or null if the matching value is not a string.

With .-based path argument: [Integer reply]({{< relref "/develop/reference/protocol-spec#integers" >}}) representing the string's new length, or [null reply]({{< relref "/develop/reference/protocol-spec#nulls" >}}) if the matching value is not a string.

{{< /multitabs >}}

See also

JSON.ARRAPEND | [JSON.ARRINSERT]({{< relref "commands/json.arrinsert/" >}})

Related topics

• [RedisJSON]({{< relref "/develop/data-types/json/" >}})
• [Index and search JSON documents]({{< relref "/develop/ai/search-and-query/indexing/" >}})