JSON.ARRINSERT

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JSON.ARRINSERT - Amazon MemoryDB

Insert one or more values into the array values at path before the index.

Syntax


JSON.ARRINSERT <key> <path> <index> <json> [json ...]

key (required) – key of JSON document type
path (required) – a JSON path
index (required) – array index before which values are inserted.
json (required) – JSON value to be appended to the array

Return

If the path is enhanced syntax:

Array of integers, representing the new length of the array at each path.
If a value is an empty array, its corresponding return value is null.
If a value is not an array, its corresponding return value is null.
OUTOFBOUNDARIES error if the index argument is out of bounds.

If the path is restricted syntax:

Integer, the new length of the array.
WRONGTYPE error if the value at the path is not an array.
OUTOFBOUNDARIES error if the index argument is out of bounds.

Examples

Enhanced path syntax:


127.0.0.1:6379> JSON.SET k1 . '[[], ["a"], ["a", "b"]]'
OK
127.0.0.1:6379> JSON.ARRINSERT k1 $[*] 0 '"c"'
1) (integer) 1
2) (integer) 2
3) (integer) 3
127.0.0.1:6379> JSON.GET k1
"[[\"c\"],[\"c\",\"a\"],[\"c\",\"a\",\"b\"]]"

Restricted path syntax:


127.0.0.1:6379> JSON.SET k1 . '[[], ["a"], ["a", "b"]]'
OK
127.0.0.1:6379> JSON.ARRINSERT k1 . 0 '"c"'
(integer) 4
127.0.0.1:6379> JSON.GET k1
"[\"c\",[],[\"a\"],[\"a\",\"b\"]]"