You should post the whole CQL query you try to execute! Why don't you use a
native JSON type for your JSON data?
2017-02-01 7:51 GMT+01:00 Rajeswari Menon <rajeswar...@thinkpalm.com>:
> Hi,
>
>
>
> I have a json data as shown below.
>
>
>
> {
>
> "address":"127.0.0.1",
>
> "datatype":"DOUBLE",
>
> "name":"Longitude",
>
> "attributes":{
>
> "Id":"1"
>
> },
>
> "category":"REAL",
>
> "value":1.390692,
>
> "timestamp":1485923271718,
>
> "quality":"GOOD"
>
> }
>
>
>
> To store the above json to Cassandra, I defined a table as shown below
>
>
>
> *create* *table* data
>
> (
>
> id *int* *primary* *key*,
>
> address text,
>
> datatype text,
>
> name text,
>
> *attributes* *map* < text, text >,
>
> category text,
>
> value text,
>
> "timestamp" *timestamp*,
>
> quality text
>
> );
>
>
>
> When I try to insert the data as JSON I got the error : *Error decoding
> JSON value for value: Expected a UTF-8 string, but got a Double: 1.390692*.
> The message is clear that a double value cannot be inserted to text column.
> The real issue is that the value can be of any data type, so the schema
> cannot be predefined. Is there a way to create a column which can hold
> value of any data type. (I don’t want to hold the entire json as string. My
> preferred way is to define a schema.)
>
>
>
> Regards,
>
> Rajeswari
>
--
Benjamin Roth
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