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Is there any way to cast string to map?

New Contributor

 

Is there any way to cast string to map in Impala?

e.g: 

select cast("A:1,B:1,C:1") as map<string, int>

 

1 ACCEPTED SOLUTION

Accepted Solutions

Rising Star

Hi, the complex MAP data type is supported, however it may not be as usable as other simple types. Please see:
https://docs.cloudera.com/runtime/7.2.10/impala-sql-reference/topics/impala-map.html

and

https://docs.cloudera.com/runtime/7.2.10/impala-sql-reference/topics/impala-complex-types.html#compl... 

There is a similar "GET_JSON_OBJECT" built-in UDF, which may help you - depending what you need to achieve, please see:

https://docs.cloudera.com/runtime/7.2.10/impala-sql-reference/topics/impala-misc-functions.html#misc... 

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2 REPLIES 2

Rising Star

Hi, the complex MAP data type is supported, however it may not be as usable as other simple types. Please see:
https://docs.cloudera.com/runtime/7.2.10/impala-sql-reference/topics/impala-map.html

and

https://docs.cloudera.com/runtime/7.2.10/impala-sql-reference/topics/impala-complex-types.html#compl... 

There is a similar "GET_JSON_OBJECT" built-in UDF, which may help you - depending what you need to achieve, please see:

https://docs.cloudera.com/runtime/7.2.10/impala-sql-reference/topics/impala-misc-functions.html#misc... 

View solution in original post

Community Manager

@HareshAmin, Has the reply helped resolve your issue? If so, please mark the appropriate reply as the solution, as it will make it easier for others to find the answer in the future. 



Regards,

Vidya Sargur,
Community Manager


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