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MDEV-21606 Improve update handler (long unique keys on blobs) MDEV-21470 MyISAM and Aria start_bulk_insert doesn't work with long unique MDEV-21606 Bug fix for previous version of this code MDEV-21819 2 Assertion `inited == NONE || update_handler != this' - Move update_handler from TABLE to handler - Move out initialization of update handler from ha_write_row() to prepare_for_insert() - Fixed that INSERT DELAYED works with update handler - Give an error if using long unique with an autoincrement column - Added handler function to check if table has long unique hash indexes - Disable write cache in MyISAM and Aria when using update_handler as if cache is used, the row will not be inserted until end of statement and update_handler would not find conflicting rows. - Removed not used handler argument from check_duplicate_long_entries_update() - Syntax cleanups - Indentation fixes - Don't use single character indentifiers for arguments |
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