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  1. MariaDB Server
  2. MDEV-39620

Incorrect error message when dropping a column with a combined unique index

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      CREATE TABLE `TestTab` (
      		 
        `ID` int(11) NOT NULL AUTO_INCREMENT,
      		 
        `MyCol1` int(11) NOT NULL,
      		 
        `MyCol2` int(11) NOT NULL,
      		 
        PRIMARY KEY (`ID`),
      		 
        UNIQUE KEY `MyUniqIdx` (`MyCol1`,`MyCol2`)
      		 
      ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_bin

      drop column

      alter table TestTab drop MyCol2

      Error Message:

      ERROR 1072 (42000) at line 1: Key column 'MyCol2' doesn't exist in table

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            pranav.tiwari@mariadb.com Pranav Kumar Tiwari
            svh Stefan van Hasselt
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