JSON.ARRAPPEND

Append one or more values to the array values at the path.

Examples

Enhanced path syntax:

127.0.0.1:6379> JSON.SET k1 . '[[], ["a"], ["a", "b"]]'
OK
127.0.0.1:6379> JSON.ARRAPPEND  k1 $[*] '"c"'
1) (integer) 1
2) (integer) 2
3) (integer) 3
127.0.0.1:6379> JSON.GET k1
"[[\"c\"],[\"a\",\"c\"],[\"a\",\"b\",\"c\"]]"

Restricted path syntax:

127.0.0.1:6379> JSON.SET k1 . '[[], ["a"], ["a", "b"]]'
OK
127.0.0.1:6379> JSON.ARRAPPEND  k1 [-1] '"c"'
(integer) 3
127.0.0.1:6379> JSON.GET k1
"[[],[\"a\"],[\"a\",\"b\",\"c\"]]"

RESP2 Reply

• If the path is enhanced syntax:

  • Array reply: Array of integers representing the new length of the array at each path.

  • Nil reply: For each path where the value is not an array.

• If the path is restricted syntax:

  • Integer reply: The array's new length.

  • Integer reply: If multiple array values are selected, the command returns the new length of the last updated array.

• Simple error reply:

  • if the path does not exist.

  • if the value at the path is not an array (only for restricted syntax).

RESP3 Reply

• If the path is enhanced syntax:

  • Array reply: Array of integers representing the new length of the array at each path.

  • Null reply: For each path where the value is not an array.

• If the path is restricted syntax:

  • Integer reply: The array's new length.

  • Integer reply: If multiple array values are selected, the command returns the new length of the last updated array

• Simple error reply:

  • if the path does not exist.

  • if the value at the path is not an array (only for restricted syntax).