Query Rule execution Error

baghavathis

Certified Senior Developer

over 7 years ago

When I tried to execute the query rule in the expression rule, I got the following error "Expression evaluation error in rule 'mhai_getuploaddatabypid' at function 'queryruleexec': Error evaluating function 'queryruleexec' : Unexpected error executing query (type: [MHAITissueSampleDT15062], query: [MHAI_getUploadDataByPid], order by: [[]], filters:[(pid = TypedValue[it=1,v=1])])" . Does anyone know why this unexpected error occurs. But the same rule works in different environment.

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0 Josh
Certified Lead Developer
over 7 years ago

Can you post the application log?
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0 Sidhant Behura over 7 years ago

Could you please attach the code snippet too.
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0 mayurm896 over 7 years ago

It seems as if there is no data in the table such that query condition may fall true. If that is so, then you have to handle null values. Would you please confirm and let us know what is there in table.
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0 girikumard over 7 years ago

Is should not be issue with rule. Pls. check whether are they any date or timestamp fields with improper data in your table in which this query is trying to fetch. Clear all improper date/timestamp fields & then execute.
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0 bhanuprakashm over 7 years ago

@baghavathis, Iam also face the same issue in previously..do one thing check the DB and execute the query from db and them figure out the issue..

I thought,there is a data mismatch for retrieving..
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0 baghavathis
Certified Senior Developer
over 7 years ago

@bhanuprakasm, I have executed in DB, it was working properly in DB. @giri, From Appian side, It was not about the data, If I give some random data,it should return {}. But it is returning the same error.
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0 Durgesh
A Score Level 2
over 7 years ago

The same issue at my end too - Please note that, (1) CDT is created for few columns of a database view (2) Data Entity is validated & published successfully in Data Store (3) Query is executed at database end to fetch the data. It works fine (5) There is no Date/Timestamp field ( (4) Did not find an entry in the application log for the error (6) Created an expression rule with QueryEntity to fetch the data but getting an error - "An error occurred while retrieving the data."
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0 bhanuprakashm over 7 years ago

@durgeshk,for your scenario this is view CDT.
1. Can you please check when you are publish the entity it is mapped to view or not.
2. In the view cdt contains primary key or not..if not you are not able to retrieve the data..

Hope it will help to you..
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0 baghavathis
Certified Senior Developer
over 7 years ago

Thank you for the response, the issue got resolved, there was mismatch in datatype with the DB table and the cdt
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0 Durgesh
A Score Level 2
over 7 years ago

@bhanuprakashm - 1) The entity is getting validated in Appian. No problem at all. 2) Providing primary key in CDT so that would also not a problem.

@baghavathis - Can you add in more details about the mistmatch of datatype between table & cdt? Can you give which data type had an issue and how did you fix that? it will be helpful. Thanks.
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