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
"[]"
