Re: Jsonb column

Because you obtain Cartesian JOIN between following data-sources:
- jsonb_pretty(properties) as properties,
- jsonb_object_keys(properties) as keys, which is SETOF all keys
- jsonb_each(properties) as json, which is SETOF jey-values from your column
properties::jsonb ? 'sendTo' as second, which is single TRUE/FALSE

Then you do
"FETCH FIRST 1 ROWS ONLY;"
which will return only 1st row of all rows from above combinations

Maybe You need something like?
SELECT jsonb_pretty(*j.*properties) as properties,jsonb_object_keys(
*j.*properties)
as keys,jsonb_each( *j.*properties) as json, *j.*properties::jsonb ?
'sendTo' as second FROM
(select * from JMS_MESSAGE FETCH FIRST 1 ROWS ONLY) *j*;
But for each key (from "jsonb_object_keys") and key-values row (from
"jsonb_each") you'll have fetched each time full jsonb column
pretty-printed and TRUE/FALSE from "?"-operator

Regards,
AlexL

On Tue, Mar 12, 2019 at 3:33 PM MICHAEL LAZLO <giantmetfan(at)comcast(dot)net>
wrote:

> I have a table that has a column, properties, of type jsonb.
>
>
> Based on documentation:
>
>
> https://www.postgresql.org/docs/10/functions-json.html
>
>
> To see all key / value pairs laid out as a table structure of columns, I
> can use function:
>
>
> jsonb_each(jsonb) which returns:
>
>
> "setof key text, value jsonb"
>
>
> Also if I want to see just the keys, I can use function:
>
>
> jsonb_object_keys(jsonb) which returns:
>
>
> "Returns set of keys in the outermost JSON object."
>
>
> , as per documentation.
>
>
> So why does my output look like this:
>
>
> SELECT jsonb_pretty(properties) as
> properties,jsonb_object_keys(properties) as keys,jsonb_each(properties) as
> json, properties::jsonb ? 'sendTo' as second FROM JMS_MESSAGE
> FETCH FIRST 1 ROWS ONLY;
> properties | keys | json | second
>
> -------------------------------------------------------------------------------+------+---------------+--------
> { +| uri | (uri,"""/""") | t
> "uri": "/", +| | |
> "sendTo": "all", +| | |
> "tracon": "A80", +| | |
> "airport": "KATL", +| | |
> "msgType": "ML", +| | |
> "version": "4.0", +| | |
> "__HQ_CID": "5499f946-2ec6-11e9-916d-d566236f637b", +| | |
> "globalID": "41965859", +| | |
> "msgSeqID": "2530832", +| | |
> "timeline": "1550015275141 1550015275141 1550015275216", +| | |
> "timestamp": "2019-02-12T23:47:55.141Z", +| | |
> "req_method": "POST", +| | |
> "JMS_Solace_isXML": "true", +| | |
> "JMSXDeliveryCount": "1", +| | |
> "HQ_BRIDGE_MSG_ID_LIST":
> "ID:10.182.186.1188f32163b022a1ad0:16940996805",+| | |
> "JMS_Solace_DeliverToOne": "false", +| | |
> "solace_routing_dest_name": "SMES/all/ML/KATL/A80", +| | |
> "JMS_Solace_ElidingEligible": "false", +| | |
> "JMS_Solace_DeadMsgQueueEligible": "false", +| | |
> "Solace_JMS_Prop_IS_Reply_Message": "false" +| | |
> } | | |
> (1 row)
>
>
> The above jsonb_each and jsonb_object_keys both return only the first key.
> The boolean check if some key is in the jsonb column, (properties::jsonb ?
> 'sendTo'), returns true so I should see it in the returns for jsonb_each
> and json_object_keys.
>
>
> Anyone know why I am not seeing all the keys in this row column?
>
>