I have the following data in json format
[{"name" : "var1","data" : "val1"},{"name" : "var2","data" : "val2"}]
I want to check the data is val1 or not if name is var1
you can use the JSON_CONTAINS to access the MySQL JSON column
SELECT * FROM <table>
WHERE JSON_CONTAINS(<json_column>, '{"name": "var1"}') OR
!JSON_CONTAINS(<json_column>, '{"data": "var1"}')
Related
I have data which is of type json in MySQL and column name of json data is IMEI_DATA.
IMEI_DATA: {"SUBSCRIBER_HISTORY": [{"IMEI": "12345678", "COUNTER": "1", "Service Flag": "7", "UPDATE_DATE_UNIX_TIME": "65667"}]}
I need to extract the field IMEI from it and tried with json extract query like this:
SELECT json_extract(IMEI_DATA,"$.SUBSCRIBER_HISTORY.IMEI") FROM SUBSCRIBER_HISTORY_JSON
and it is giving the result as null..
I'm ingesting a large simple json dataset from Azure Blob and moving data into a "stage" called "cities_stage" with FILE_FORMAT = json like so.
(Here is the error steps are below "Error parsing JSON: unknown keyword "Hurzuf", pos 7.")
create or replace stage cities_stage
url='azure://XXXXXXX.blob.core.windows.net/xxxx/landing/cities'
credentials=(azure_sas_token='?st=XXXXX&se=XXX&sp=racwdl&sv=XX&sr=c&sig=XXX')
FILE_FORMAT = (type = json);
I then take this stage location and dump it into a table with a single variant column like so. The file I'm ingesting is larger than 16mb so I create individual rows for each object by using type = json strip_outer_array = true
create or replace table cities_raw_source (
src variant);
copy into cities_raw_source
from #cities_stage
file_format = (type = json strip_outer_array = true)
on_error = continue;
When I select * from cities_raw_source each row looks like the following.
{
"coord": {
"lat": 44.549999,
"lon": 34.283333
},
"country": "UA",
"id": 707860,
"name": "Hurzuf"
}
When I add a reference to "country" or "name" that's where the issues come in. Here is my query (I did not use country in this one but it produces the same result).
select parse_json(src:id),
parse_json(src:coord:lat),
parse_json(src:coord:lon),
parse_json(src:name)
from cities_raw_source;
ERROR:
Error parsing JSON: unknown keyword "Hurzuf", pos 7.
ID, Lat, and Lon all come back as expected if I remove "src:name"
Any help is appreciated!
It turns out I had everything correct except for the query itself.
When querying a VARIANT column you do not need to PARSE_JSON so the correct query would look like this.
select src:id,
src:coord:lat,
src:coord:lon,
src:name
from cities_raw_source;
Hi i am using phpmyadmin mysql
In one of my database table i have a column contact_email and the value is stored as below
contact_email
["ass#sss.ib"]
Which is Json encoded data , I am trying to convert that encoded data into string using query
I tried qith JSON_extract but it gave error.
Output what i need is
From ["ass#sss.ib"] to ass#sss.ib
Any help appreciated.
Simple use something like that
var obj = jQuery.parseJSON( '{ "name": "John" }' );
alert( obj.name === "John" );
I have an SQL Table which one of the columns contain a JSON array in the following format:
[
{
"id":"1",
"translation":"something here",
"value":"value of something here"
},
{
"id":"2",
"translation":"something else here",
"value":"value of something else here"
},
..
..
..
]
Is there any way to use an SQL Query and retrieve columns with the ID as header and the "value" as the value of the column? Instead of return only one column with the JSON array.
For example, if I run:
SELECT column_with_json FROM myTable
It will return the above array. Where I want to return
1,2
value of something here, value of something else here
You can't use SQL to retrieve columns from the JSON stored inside the table: to the database engine the JSON is just unstructured text saved in a text field.
Some relational databases, like PostgreSQL, have a JSON type and functions to support JSON query. If this is your case, you should be able to perform the query you want.
Check this for an example on how it work with PostgreSQL:
http://clarkdave.net/2013/06/what-can-you-do-with-postgresql-and-json/
We are attempting to create a schema to load a massive JSON structure into Hive. We are having a problem, however, in that some fields have leading underscores for names--at the root level, this is fine, but we have not found a way to make this work for nested fields.
Sample JSON:
{
"_id" : "319FFE15FF908EDD86B7FDEADBEEFBD8D7284128841B14AA6A966923C268DF39",
"SomeThing" :
{
"_SomeField" : 22,
"AnotherField" : 2112,
"YetAnotherField": 1
}
. . . etc . . . .
Using a schema as follows:
create table testSample
(
id string,
something struct
<
somefield:int,
anotherfield:bigint,
yetanotherfield:int
>
)
row format serde 'org.openx.data.jsonserde.JsonSerDe'
with serdeproperties
(
"mapping.id" = "_id",
"mapping.somefield" = "_somefield"
);
This schema builds OK--however, after loading the in above sample, the value of "somefield" (the nested + leading underscore one) is always null (all the other values exist and are correct).
We've been trying a lot of syntax combinations, but to no avail.
Does anyone know the trick to hap a nested field with a leading underscore in its name?
Cheers!
Answering my own question here: there is no trick because you can't.
However, there's an easy work-around: you can tell Hive to treat the names as literals upon creating the schema. If you do this, you will also need to query using the same literal syntax. In the above example, it would look like:
`_something` struct<rest_of_definitions>
without any special serde properties for it.
Then use again in query:
select stuff.`_something` from sometable;
e.g., schema:
create table testSample
(
id string,
something struct
<
`_somefield`:int,
anotherfield:bigint,
yetanotherfield:int
>
)
row format serde 'org.openx.data.jsonserde.JsonSerDe'
with serdeproperties("mapping.id" = "_id");
for an input JSON like:
{
"_id": "someuid",
"something":
{
"_somefield": 1,
"anotherfield": 2,
"yetanotherfield": 3
}
}
with a query like:
select something.`_somefield`
from testSample
where something.anotherfield = 2;