JSON.CLEAR - Amazon MemoryDB

JSON.CLEAR

Clear the arrays or an objects at the path.

Syntax

JSON.CLEAR <key> [path]

  • key (required) – key of JSON document type

  • path (optional) – a JSON path. Defaults to the root if not provided

Return

  • Integer, the number of containers cleared.

  • Clearing an empty array or object accounts for 0 container cleared.

    Note

    Prior to Redis OSS version 6.2.6.R2, clearing an empty array or object accounts for 1 container cleared.

  • Clearing a non-container value returns 0.

  • If no array or object value is located by the path, the command returns 0.

Examples

127.0.0.1:6379> JSON.SET k1 . '[[], [0], [0,1], [0,1,2], 1, true, null, "d"]'
OK
127.0.0.1:6379>  JSON.CLEAR k1  $[*]
(integer) 6
127.0.0.1:6379> JSON.CLEAR k1  $[*]
(integer) 0
127.0.0.1:6379> JSON.SET k2 . '{"children": ["John", "Jack", "Tom", "Bob", "Mike"]}'
OK
127.0.0.1:6379> JSON.CLEAR k2 .children
(integer) 1
127.0.0.1:6379> JSON.GET k2 .children
"[]"