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https://issues.apache.org/jira/browse/NIFI-6878?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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ZhangCheng updated NIFI-6878:
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    Description: 
ConvertJSONToSQL  Statement Type provides fixed options : UPDATE,INSERT,DELETE. 

Usually, it can meet our needs. But  in actual application,I think It's not 
flexible enough.

 In some cases, we need to dynamically indicate the Statement Type.

For example,the data from CpatureChangeMysql owns  the attribute  of statement  
type(cdc.event.type, we need to convert the data to sql(DML) orderly; And we 
now have to use RouteOnAttribute to transfer data to three branches , Build SQL 
statement separately ,finally,we have to use EnforceOrder  to ensure the order 
of SQL statements.

But it will be easy if ConvertJSONToSQL  supports dynamical Statement Type . 

It is easy to implement this feature just like PutDatabaseRecord. 

In practice, I did use PutDatabaseRecord   instead of ConvertJSONToSQL.

  was:ConvertJSONToSQL  Statement Type provides fixed options : 
UPDATE,INSERT,DELETE. Usually, it can meet our needs. But  in actual 
application,I think It's not flexible enough. In some cases, we need to 
dynamically indicate the Statement Type. For example,the data from 
CpatureChangeMysql owns  the attribute  of statement  type(cdc.event.type, we 
need to convert the data to sql(DML) orderly; And we now have to use 
RouteOnAttribute to transfer data to three branches , Build SQL statement 
separately ,finally,we have to use EnforceOrder  to ensure the order of SQL 
statements.But it will be easy if ConvertJSONToSQL  supports dynamical 
Statement Type .  It is easy to implement this feature just like 
PutDatabaseRecord.  In practice, I did use PutDatabaseRecord   instead of 
ConvertJSONToSQL.


> ConvertJSONToSQL Statement Type Support  "Use statement.type Attribute" or 
> Supports Expression Language 
> --------------------------------------------------------------------------------------------------------
>
>                 Key: NIFI-6878
>                 URL: https://issues.apache.org/jira/browse/NIFI-6878
>             Project: Apache NiFi
>          Issue Type: Improvement
>          Components: Extensions
>            Reporter: ZhangCheng
>            Priority: Minor
>
> ConvertJSONToSQL  Statement Type provides fixed options : 
> UPDATE,INSERT,DELETE. 
> Usually, it can meet our needs. But  in actual application,I think It's not 
> flexible enough.
>  In some cases, we need to dynamically indicate the Statement Type.
> For example,the data from CpatureChangeMysql owns  the attribute  of 
> statement  type(cdc.event.type, we need to convert the data to sql(DML) 
> orderly; And we now have to use RouteOnAttribute to transfer data to three 
> branches , Build SQL statement separately ,finally,we have to use 
> EnforceOrder  to ensure the order of SQL statements.
> But it will be easy if ConvertJSONToSQL  supports dynamical Statement Type . 
> It is easy to implement this feature just like PutDatabaseRecord. 
> In practice, I did use PutDatabaseRecord   instead of ConvertJSONToSQL.



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