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I'm trying to enable Change Data Capture on a table with a clustered columnstore index, a unique non-clustered index, and a non-unique non-clustered index in SQL Server Standard 2019. The command fails with this error:

Msg 35353, Level 16, State 1, Procedure sys.sp_cdc_enable_table_internal, 
Line 243 [Batch Start Line 16]
Change Data Capture cannot be enabled on a table with a clustered columnstore index. 
Consider dropping clustered columnstore index

I don't understand why I'm getting this error since, as far as I can tell from Microsoft documentation, CDC is supported for CCIs.

Has anyone else run into this error or know why it's occurring?

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  • try creating a primary key/unique non-clustered index to give rows formal identity so that CDC will function.
    – Conor Cunningham MSFT
    Oct 5, 2020 at 17:48
  • The table already has a unique non-clustered index.
    – Avyncentia
    Oct 6, 2020 at 19:10
  • Apologies - I checked the code and indeed it is supposed to fail. Can you point out where you say the docs says it should work?
    – Conor Cunningham MSFT
    Oct 6, 2020 at 20:52

2 Answers 2

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I just heard back from Microsoft. The documentation on CCIs and CDC is incorrect/misleading. Change Data Capture is not supported for clustered columnstore indexes. It is supported for nonclustered columnstore indexes starting in SQL Server 2016. They are correcting the documentation.

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The workaround to this limitation is posted on SO:

  1. Drop a clustered columnstore index if exists.
  2. Enable CDC.
  3. Create a clustered columnstore index.

Voila! It works!

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