MySQL Zurücksetzen automatischer Inkrementwert
ALTER TABLE table_name AUTO_INCREMENT = 1;
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ALTER TABLE table_name AUTO_INCREMENT = 1;
SET @num := 0;
UPDATE your_table SET id = @num := (@num+1);
ALTER TABLE your_table AUTO_INCREMENT =1;
SET FOREIGN_KEY_CHECKS = 0;
TRUNCATE table1;
SET FOREIGN_KEY_CHECKS = 1;