# Sharing LookupTable between Subgraph and Parent graph

**URL:** <https://forum.cloverdx.com/t/sharing-lookuptable-between-subgraph-and-parent-graph/1595>\
**Category:** CloverDX Platform\
**Created:** [March 5, 2015, 12:00am UTC](https://forum.cloverdx.com/t/sharing-lookuptable-between-subgraph-and-parent-graph/1595 "2015-03-05T00:00:00Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![otto\_brunner](https://avatars.discourse-cdn.com/v4/letter/o/9dc877/32.png) [@otto\_brunner](https://forum.cloverdx.com/u/otto_brunner)\
**Post date:** [March 5, 2015, 12:00am UTC](https://forum.cloverdx.com/t/sharing-lookuptable-between-subgraph-and-parent-graph/1595/1 "2015-03-05T00:00:00Z")

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Hi all

We would like to build a subgraph to load/fill a LookupTable which is then used in various parent graphs. Up to now, our subgraph filling the lookuptable from the database (using LookupTableReaderWriter), but the table data is not accessible from the parent graph.  
Is there a way to pass the LookupTabledata to the parent or how can they share the data ?

Thanks & best regards  
Otto

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**Author:** ![imriskal](https://avatars.discourse-cdn.com/v4/letter/i/b38774/32.png) [@imriskal](https://forum.cloverdx.com/u/imriskal)\
**Post date:** [March 10, 2015, 2:54pm UTC](https://forum.cloverdx.com/t/sharing-lookuptable-between-subgraph-and-parent-graph/1595/2 "2015-03-10T14:54:51Z")

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Hello Otto,

If I understand correctly, you want to use Simple lookup table. This is unfortunately not possible at the moment. However, it is an interesting idea. I have started a new issue in our bug tracker, see [CLO-5859](https://bug.javlin.eu/browse/CLO-5859).

A workaround is to use [Persistent lookup table](http://doc.cloveretl.com/documentation/UserGuide/topic/com.cloveretl.gui.docs/docs/persistent-lookup-table.html).