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mysql-test/r/key.result: Fixed result after removing wrong bug fix mysql-test/t/key.test: Added SHOW CREATE TABLE, which is the proper way to check for table definitions sql/table.cc: Reverted wrong bug fix. The intention with the original code was to show that MySQL treats the first given unique key as a primary key. Clients can use the marked primary key as a real primary key to validate row changes in case of conflicting updates. The ODBC driver (and other drivers) may also use this fact to optimize/check updates and handle conflicts. The marked key also shows what some engines, like InnoDB or NDB, will use as it's internal primary key. For checking if someone has declared a true PRIMARY KEY, one should use 'SHOW CREATE TABLE'
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