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  1. MariaDB Server
  2. MDEV-25172

Wrong error message for ADD COLUMN .. AS ROW START

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    Description

      Not quite all dropped:

      CREATE OR REPLACE TABLE t (
      		 
      x INT
      		 
      ) WITH SYSTEM VERSIONING;
      		 
       
      		 
      ALTER TABLE t DROP SYSTEM VERSIONING;
      		 
       
      		 
      ALTER TABLE t ADD COLUMN ts TIMESTAMP(6) GENERATED ALWAYS AS ROW START;

      Last alter table results in:

      Duplicate ROW START column `ts`

      https://dbfiddle.uk/?rdbms=mariadb_10.3&fiddle=977d0152bbfc5a7162efd85db312d7c8

      Same error occurs on fresh table. SO its just an odd misleading error message.

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          relates to

          Bug - A problem which impairs or prevents the functions of the product. MDEV-16130 wrong error message adding AS ROW START to versioned table

          • Major - Major loss of function.
          • Closed

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              midenok Aleksey Midenkov
              danblack Daniel Black
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