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How is the Next Value for an Auto-Increment Id Determined in MySQL? (Doc ID 1352943.1)

Last updated on SEPTEMBER 04, 2023

Applies to:

MySQL Server - Version 5.0 and later
Information in this document applies to any platform.


Learn how MySQL determines the next value for an auto-increment column and which options can be used to control the behavior.


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In this Document
 Auto-Increment Assignment
 The innodb_autoinc_lock_mode Option
 innodb_autoinc_lock_mode = 0 ("Traditional" Lock Mode)
 innodb_autoinc_lock_mode = 1 ("Consecutive" Lock Mode)
 innodb_autoinc_lock_mode = 2 ("Interleaved" Lock Mode)
 Implications of innodb_autoinc_lock_mode
 Using Auto-Increment With Replication
 "Lost" Auto-Increment Values and Sequence Gaps
 Gaps in Auto-Increment Values for "Bulk Inserts"

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