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The following page has been changed by NoblePaul:
http://wiki.apache.org/solr/DataImportHandler

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   * '''`deltaQuery`''' : Only used in delta-import
   * '''`parentDeltaQuery`''' : Only used in delta-import
   * '''`deletedPkQuery`''' : Only used in delta-import
+  * '''`deltaImportQuery`''' : (Only used in delta-import) . If this is not 
present , DIH tries to construct the import query by(after identifying the 
delta) modifying the '`query`' (this is error prone). There is a namespace 
`${dataimporter.delta.<column-name>}` which can be used in this query.  e.g: 
`select * from tbl where id=${dataimporter.delta.id}`  <!> ["Solr1.4"].
-  * '''`deltaImportQuery`''' : (Only used in delta-import) . If this is 
present this will be used during the import 'phase' of delta import instead of 
`query` . There is a namespace `${dataimporter.delta.<column-name>}` which can 
be used in this query. <!> ["Solr1.4"]
- 
  
  
  == Commands ==

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