'How to embed SQL script in Azure Data Factory Mapping Data Flows Expression Builder

After executing my mapping dataflow I would like to run a clean-up script using the Post SQL Script option of the Sink activity.

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However I'm not having much success with the expression builder. This is what I've tried so far:

concat ( 'UPDATE [cfg].[Entity] SET SchemaVersion =' , toString(CachedEntities#lookup($EntityName).EntityID + 1) )


Solution 1:[1]

Thank you @user1309226 for updating the error cause and resolution in the comments. Posting it as an answer to help other community members.

This syntax worked: toString(CachedEntities#lookup($EntityName).SchemaVersion + 1)

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Sources

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Source: Stack Overflow

Solution Source
Solution 1 NiharikaMoola-MT