JSON_PATH

Extracts data from JSON objects.

Syntax

JSON_PATH(path, JSON)

Arguments

Name	Type	Description	Default Value
path	string	JSON Path Expression
JSON	string	A string that contains JSON Document

Examples

path	JSON	Output
'$[*].author.name'	'[{
"name": "The Great Gatsby",
"author": {
"name": "F. Scott Fitzgerald"
}
},
{
"name": "Nineteen Eighty-Four",
"author": {
"name": "George Orwell"
}
}]'	[F. Scott Fitzgerald, George Orwell]
'net_id'	'{ "net_id": 41 }'	41
'net_id'	'{ "net_id": [41, 42] }'	[41,42]
'net_id[*]'	'{ "net_id": [41, 42] }'	[41, 42]
'net_id.parent'	'{ "net_id": [41, 42] }'	null
'$[*]'	'[1,2,3]'	[1, 2, 3]
'$[*].author'	'[{
"name": "The Great Gatsby",
"author": {
"name": "F. Scott Fitzgerald"
}
},
{
"name": "Nineteen Eighty-Four",
"author": {
"name": "George Orwell"
}
}]'	[{"name":"F. Scott Fitzgerald"}, {"name":"George Orwell"}]

Transformation job example

SQL

CREATE JOB function_operator_example
    ADD_MISSING_COLUMNS = true
AS INSERT INTO default_glue_catalog.upsolver_samples.orders_transformed_data 
  MAP_COLUMNS_BY_NAME
    SELECT path, JSON,
        JSON_PATH('$[*].author.name', JSON) AS Output
    FROM default_glue_catalog.upsolver_samples.orders_raw_data
    LET path = '$[*].author.name',
        JSON = '[{
 "name": "The Great Gatsby",
 "author": {
  "name": "F. Scott Fitzgerald"
 }
},
{
 "name": "Nineteen Eighty-Four",
 "author": {
   "name": "George Orwell"
 }
}]'
    WHERE $commit_time BETWEEN run_start_time() AND run_end_time()
    LIMIT 1;

Query result

path	JSON	Output
'$[*].author.name'	'[{
"name": "The Great Gatsby",
"author": {
"name": "F. Scott Fitzgerald"
}
},
{
"name": "Nineteen Eighty-Four",
"author": {
"name": "George Orwell"
}
}]'	[F. Scott Fitzgerald, George Orwell]