InnoDB: does `redo log` contain initial value and final value? or just final value?
start transaction;
update users set age = 34 where user_id = 3 // update age from 30 to 34 years old.
....
....
when I am updating the age of this user, InnDB will write redo log.
What's the structure of redo log?
Does it contain
initial value 30 and final value 34? or just contains new value 34?
mysql innodb transaction-log transaction
asked 1 min ago
Ryan LvRyan Lv
6318
add a comment |
start transaction;
update users set age = 34 where user_id = 3 // update age from 30 to 34 years old.
....
....
when I am updating the age of this user, InnDB will write redo log.
What's the structure of redo log?
Does it contain
initial value 30 and final value 34? or just contains new value 34?
mysql innodb transaction-log transaction
asked 1 min ago
Ryan LvRyan Lv
6318
add a comment |
start transaction;
update users set age = 34 where user_id = 3 // update age from 30 to 34 years old.
....
....
when I am updating the age of this user, InnDB will write redo log.
What's the structure of redo log?
Does it contain
initial value 30 and final value 34? or just contains new value 34?
mysql innodb transaction-log transaction
asked 1 min ago
Ryan LvRyan Lv
6318
start transaction;
update users set age = 34 where user_id = 3 // update age from 30 to 34 years old.
....
....
when I am updating the age of this user, InnDB will write redo log.
What's the structure of redo log?
Does it contain
initial value 30 and final value 34? or just contains new value 34?
mysql innodb transaction-log transaction
mysql innodb transaction-log transaction
asked 1 min ago
Ryan LvRyan Lv
6318
asked 1 min ago
Ryan LvRyan Lv
6318
asked 1 min ago
Ryan LvRyan Lv
6318
asked 1 min ago
Ryan LvRyan Lv
6318
asked 1 min ago
Ryan LvRyan Lv
6318
6318
add a comment |
add a comment |
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