Hi I have a table like so, and I am trying to unnest a string in the table however been unable to do so.
id
data
1
{"$google_analytics_client_id":"xxxx","fullName":"A","phoneNumber":"+xxxxx","userId":"263175"}
2
{"$google_analytics_client_id":"xxx","fullName":"B","phoneNumber":"+xxxxx","userId":"263143"}
I am trying to get the id and userId. The data part is in string.
The current code is as below, where I plan to see what's being returned so that I can select it.
select *
from table
unnest(data)
You can use the following to retrieve a value from a JSON or JSON formatted string object:
select
id,
json_value(data, '$.userId') as userId,
from sample_data
Information on JSON functions can be found here:
https://cloud.google.com/bigquery/docs/reference/standard-sql/json_functions#json_value
Related
I have a Postgres query like this
SELECT * FROM my_table WHERE status IN (2,1);
This is part of a big query, but I am facing an issue with the WHERE IN part here. I am using this query inside a function and the input parameters are in JSON format. Now the status values I am getting in in the form of a JSON array and it will be like status=[2,1]. I need to use this array in the WHERE clause in the query and not sure how to do that. Currently, I am using like
SELECT * FROM my_table WHERE status IN (array([2,1]));
But this is giving me an error. The status column is of smallint data type. I know this is simple, but I am very much new to Postgres and could not figure out any method to use the JSON array in WHERE IN clause. Any help will be appreciated.
I have a column called vendor having jsonnb type and a json data like [{"id":"1","name":"Dev"}]
I wanted to select row data puting this column in where clause like WHERE vendor.id=1
So how can i do that, any help will be appriciated
You can use the contains operator #>:
select *
from the_table
where vendor #> '[{"id":"1"}]'::jsonb;
I have a db table called ex_table and
Location is a column.
when i ran query it shows array structure.
I need extract array element.
My Query was
Select location form ex_table
it shows
[{country=BD, state=NIL, city=NIL}]
how do I select only city form location column?
Try the following:
WITH dataset AS (
SELECT location
FROM ex_table
)
SELECT places.city
FROM dataset, UNNEST (location) AS t(places)
As this is an array of objects, you need to flatten the data. This is done using the UNNEST syntax in Athena. More info on this can be found in the AWS documentation
In a table called payouts, there is a column stripeResponseData where the data is in the following structure:
{"id":"tr_1BlSHbGQXLV7RqqnHJffUVO0","object":"transfer","amount":39415,"amount_reversed":0,"balance_transaction":"txn_1BlSHbGQXfV7AqqnGi2o7UiY","created":1516239215,"currency":"usd","description":null,"destination":"acct_1BWWAmAzms5xPfV9","destination_payment":"py_1BlSHbAzms5xkfV91RHAOrno","livemode":true,"metadata":{},"reversals":{"object":"list","data":[],"has_more":false,"total_count":0,"url":"/v1/transfers/tr_1BlSHbYQXLV7AqqnHJffUVO0/reversals"},"reversed":false,"source_transaction":null,"source_type":"card","transfer_group":null}
Within my SQL SELECT statement, I want to return only the value of the key "destination". How do I write my SQL query?
My desired result of the query:
SELECT "stripeResponseData" FROM payouts [...]
(where I don't know how to write [...]) should look like the following (assume we have 3 rows with different values on "destination"):
acct_1BWWAmAzms5xPfV9
acct_1AY0phDc9pCDpLR8
acct_1AwG3VL7DXxftOaS
How do I extract that value from the list within the stripeResponseData column?
See this sqlfiddle. This query will fetch the ID from stripResponseData where the id is a specific id (Probably not very useful, but does show you how to select and query):
SELECT data->>'id' FROM stripeResponseData WHERE data #> '{"id":"tr_1BlSHbGQXLV7RqqnHJffUVO0"}';
Because you mentioned your data was a string, you need to to type conversions to query/use it correctly. See this sqlfiddle:
SELECT data::jsonb->>'id' FROM stripeResponseData WHERE data::jsonb #> '{"id":"tr_1BlSHbGQXLV7RqqnHJffUVO0"}';
Per your edit, you can simply query destination in almost the exact same way. This will get all the id's from stripeResponseData where destination = acct_1BWWAmAzms5xPfV9:
SELECT data::jsonb->>'id' FROM stripeResponseData WHERE data::jsonb #> '{"destination":"acct_1BWWAmAzms5xPfV9"}';
In my table mytable I have a json field called data and I inserted json with a lot of keys & values.
I know that it's possible to select individual fields like so:
SELECT data->'mykey' as mykey from mytable
But how can I get an overview of all of the json keys on a certain depth? I would have expected something like
SELECT data->* from mytable
but that doesn't work. Is there something similar?
You can use the json_object_keys() function to get all the top-level keys of a json value:
SELECT keys.*
FROM mytable, json_object_keys(mytable.data) AS keys (mykey);
If you want to search at a deeper level, then first extract that deeper level from the json value using the #> operator:
SELECT keys.*
FROM mytable, json_object_keys(mytable.data #> '{level1, level2}') AS keys (mykey);
Note that the function returns a set of text, so you should invoke the function as a row source.
If you are using the jsonb data type, then use the jsonb_object_keys() function.