json_query
json_query(JsonDocument, Path)
The json_query extracts the object or array identified by Path
from JsonDocument. Path is a varchar in the JSON Path Syntax.
This will return either an object or an array value. If Path refers
to a scalar no value is returned.
Assuming the same Json field from the previous examples:
json_query(Json, '$')
---------------------
{"items":[{"Num":1,"Text":"The Name","First":true},{"Num":2.0,"Text":"The second one","First":false},null]}
json_query(Json, '$.items[0]')
------------------------------
{"Num":1,"Text":"The Name","First":true}
json_query(Json, '$.items')
---------------------------
[{"Num":1,"Text":"The Name","First":true},{"Num":2.0,"Text":"The second one","First":false},null]
The following will return an empty string as they refer to scalars
or non-existent keys.
json_query(Json, '$.items[0].Num')
json_query(Json, '$.items[1].Num')
json_query(Json, '$.items[0].Text')
json_query(Json, '$.items[0].First')
json_query(Json, '$.items[2]')
Copyright © Thunderstone Software Last updated: Apr 15 2024