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• Autoindex: View as plain text: Do you plan to include in future MySQL release command like REBUILD AUTOINCREMENT field_name.
• # create an index so mySQL can efficiently match. MySQL uses Watcom (Oracle) syntax for UPDATE. Sorting AND set auto_increment order.

Phpmyadmin Perhaps you could just select the phpMyAdmin Operations tab:. In phpMyAdmin, click on the table you want to reset or change the AUTOINCREMENT value. Click on the Operations Tab. In the Table Options box find the autoincrement field. Enter the new autoincrement starting value.

Click on the Go button for the Table Options box. Since this one of the most frequently asked questions for phpmyadmin, you can learn more about this in this blog: Supplemental Info For an empty table, another way to reset the autoincrement attribute is to run TRUNCATE TABLE mydb.tablename; Don't run this if you have data in it. If you want to hose the data, then be my guest. In phpmyadmin, just click the SQL tab, enter the command, and run it. For a nonempty table, you may want to adjust the autoincrement attribute to the highest existing id in use in case higher entries were deleted. First, optimize the table OPTIMIZE TABLE mydb.mytable; Next, locate the highest value for the autoincrement column (say it is id) SELECT MAX(id) maxid FROM mydb.mytable; Suppose the answer returns 27. Goto the Operations tab and enter 28.

How can I reset a mysql table auto-increment to 1 in phpMyAdmin? I know that in MySQL at the. What would be the fastest approach to bulk update this mysql.

Summary: this tutorial shows you how to use MySQL INSERT ON DUPLICATE KEY UPDATE statement to insert or update data in a table if a duplicate unique key or primary key occurs. Introduction to the MySQL INSERT ON DUPLICATE KEY UPDATE statement The INSERT ON DUPLICATE KEY UPDATE is a MySQL extension to the. If you specify the ON DUPLICATE KEY UPDATE option in the INSERT statement and the new row causes a duplicate value in the UNIQUE or index, MySQL performs an to the old row based on the new values. The syntax of INSERT ON DUPLICATE KEY UPDATE statement is as follows. ON DUPLICATE KEY UPDATE column1 = newvalue1, column2 = newvalue2,; The only addition to the INSERT statement is the ON DUPLICATE KEY UPDATE clause where you specify a list of comma-separated column assignments. MySQL returns the number of affected rows based on the action it performed.

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If MySQL inserts the row as a new row, the number of affected row is 1. If MySQL updates the current row, the number of affected rows is 2. Ameritec am-44 manual software. In case MySQL updates the current row with its current values, the number of affected rows is 0. To reuse the values of the INSERT part in the DUPLICATE KEY UPDATE clause, you use the VALUES function.