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tidb v2.1.12 Release Notes

Release Date: 2019-06-13 // almost 5 years ago
    • 🛠 Fix the issue caused by unmatched data types when using the index query feedback #10755
    • 🛠 Fix the issue that the blob column is changed to the text column caused by charset altering in some cases #10745
    • 🛠 Fix the issue that the GRANT operation in the transaction mistakenly reports “Duplicate Entry” in some cases #10739
    • 👌 Improve the compatibility with MySQL of the following features
      • The DAYNAME function #10732
      • The MONTHNAME function #10733
      • Support the 0 value for the EXTRACT function when processing MONTH #10702
      • The DECIMAL type can be converted to TIMESTAMP or DATETIME #10734
    • 🔄 Change the column charset while changing the table charset #10714
    • 🛠 Fix the overflow issue when converting a decimal to a float in some cases #10730
    • 🛠 Fix the issue that some extremely large messages report the “grpc: received message larger than max” error caused by inconsistent maximum sizes of messages sent/received by gRPC of TiDB and TiKV #10710
    • 🛠 Fix the panic issue caused by ORDER BY not filtering NULL in some cases #10488
    • 🛠 Fix the issue that values returned by the UUID function might be duplicate when multiple nodes exist #10711
    • 🔄 Change the value returned by CAST(-num as datetime) from error to NULL #10703
    • 🛠 Fix the issue that an unsigned histogram meets signed ranges in some cases #10695
    • 🛠 Fix the issue that an error is reported mistakenly for reading data when the statistics feedback meets the bigint unsigned primary key #10307
    • 🛠 Fix the issue that the result of Show Create Table for partitioned tables is not correctly displayed in some cases #10690
    • 🛠 Fix the issue that the calculation result of the GROUP_CONCAT aggregate function is not correct for some correlated subqueries #10670
    • 🛠 Fix the issue that the result of Show Create Table for partitioned tables is not correctly displayed in some cases #10690