JSON parse in SQL with hash key - json

Question

I have a table with a JSON column. in this column I have a blockchain hash data.
for example this JSON:
{ "017989w06d3f902f1f362dfg48f862dba6a605229e99859a91d854f93ac13894": {
"transaction": {
"block_id": 648895,
"id": 568135560,
"hash": "017989w06d3f902f1f362dfg48f862dba6a605229e99859a91d854f93ac13894",
"date": "2020-01-14",
"time": "2020-01-14 11:37:37",
"size": 198,
},
"inputs": [
{
"block_id": 648859,
"transaction_id": 567456558,
"index": 4,
"transaction_hash": "8aa2c6c9a804mate29790e03fac462782d99f16614732f82a5214786926e1397",
"date": "2020-01-13",
"time": "2020-01-13 23:15:37",
"value": 300830,
"value_usd": 33.2264,
"recipient": "1LcrmomE74BPzBTdduE8WHU2ox4QAFEpQi",
}
],
"outputs": [
{
"block_id": 648445,
"transaction_id": 568146680,
"index": 0,
"transaction_hash": "017989w06d3f902f1f362dfg48f862dba6a605229e99859a91d854f93ac13894",
"date": "2020-01-14",
"time": "2020-01-14 11:37:37",
"value": 300048,
"value_usd": 31.9397,
"recipient": "12UJZqf4sDGRNb9uYBABJkMyX91iLjDViT",
}
]}}
I used below query:
SELECT *, JSON_VALUE(d.json_data,'$.017989w06d3f902f1f362dfg48f862dba6a605229e99859a91d854f93ac13894.transaction.size') as jj
FROM BlockChain as d
but I have an error
Msg 13607, Level 16, State 4, Line 39
JSON path is not properly formatted. Unexpected character '0' is found at position 2.
Does anyone have any idea?

Answer 1

The path
'$.017989w06d3f902f1f362dfg48f862dba6a605229e99859a91d854f93ac13894.transaction.size'
cannot have a node starting with a 0. So enclose it in quotes:
'$."017989w06d3f902f1f362dfg48f862dba6a605229e99859a91d854f93ac13894".transaction.size'.
You also have a problem with your actual JSON, in that it has trailing commas, which is not supported in SQL Server, nor in the vast majority of parsers and browsers, as it is against the spec.
If you have different key names for each value, then you need to break out the JSON with OPENJSON:
SELECT b.*, j.[key] AS hash, JSON_VALUE(j.value,'$.transaction.size') as jj
FROM BlockChain as d
CROSS APPLY OPENJSON(d.json_data) AS j