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Remove legacy Object('json') implementation in Client V1 #2594

Description

@mzitnik

Once PR is merged. ClickHouse will remove support for the old Object('json') implementation.

This PR:

  • Remove the implementation from the v1 client.
  • Update the documentation with the note about the deprecation.

Activity

  1. changed the title [-]Remove support for Object('json') in Client V1[/-] [+]Remove legacy support for Object('json') in Client V1[/+] on Sep 17, 2025
  2. changed the title [-]Remove legacy support for Object('json') in Client V1[/-] [+]Remove legacy for Object('json') in Client V1[/+] on Sep 17, 2025
  3. changed the title [-]Remove legacy for Object('json') in Client V1[/-] [+]Remove legacy Object('json') implementation in Client V1[/+] on Sep 17, 2025
  4. added this to the 0.9.9 milestone on Mar 18, 2026
  5. chernser commented on Mar 30, 2026

    @chernser
    Contributor

    @mzitnik
    how would v1 then work with older server versions?
    does it break something in client code?

  6. modified the milestones: 0.9.9, 0.9.10 on Mar 30, 2026
  7. modified the milestones: 0.9.10, 0.10.0 on Apr 15, 2026
  8. chernser commented on Jul 29, 2026

    @chernser
    Contributor

    wont fix because it is V1 and users of older versions may need it.

  9. modified the milestones: 0.12.0, 0.11.0 on Sep 23, 2026
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