[client-v2,jdbc-v2] Data Types #2796

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[client-v2,jdbc-v2] Data Types#2796

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chernser

opened on Mar 18, 2026

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There are various issues handling different data types in client and jdbc driver.

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1. chernser

   added sub-issues on Mar 18, 2026

   • [client-v2, jdbc-v2] Fix handling strings with special characters #2781
   • Time64 values cannot be read as LocalTime #2763
   • NULL Dynamic column with defaults protocol causes byte stream misalignment #2791
   • Variant column reading crashes on NULL values (0xFF discriminator not handled) #2789
   • ClickHouseBinaryFormatReader::getBigDecimal silently truncates large integer values #2748
   • [client,jdbc] Support data type MacAddress #2643
   • [client-v2] Nullable in nested incorrectly handled #2721
   • Unsupported data type: Nested #2477
   • [client-v2] Add new Geometry type #2678
   • Remove legacy Object('json') implementation in Client V1 #2594
2. chernser

   added a sub-issue on Apr 15, 2026

   • [client-v2] Add support of BFloat type #2279
3. chernser

   added

   epiclong running taskslong running tasks

   on Apr 15, 2026
4. chernser

   added sub-issues on Apr 15, 2026

   • JDBC driver passes decimal value without quotes, then where clause works wrong #2762
   • Support QBit data type (25.10) #2610
   • Unsupported data type: BFloat16 #2349
5. chernser

   removed sub-issues on Jul 29, 2026

   • [client,jdbc] Support data type MacAddress #2643
   • JDBC driver passes decimal value without quotes, then where clause works wrong #2762
6. chernser

   closed this as completedon Jul 29, 2026

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