InnoDB locking: what does index record mean? The 2019 Stack Overflow Developer Survey Results...
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InnoDB locking: what does index record mean?
The 2019 Stack Overflow Developer Survey Results Are InSQL Server - RangeX-X and RangeI-N locksAren't two writes required to update a clustered index recordShould we explicitly lock MyISAM tables or is it implicit…?Clarification on mysql deadlock situationWhy does Deadlock occur for this INSERT/UPDATE combination despite seemingly holding an X lock?InnoDB MVCC vs LockingCan InnoDB use a clustered index as a covering index?Do all Relational DBMSes store table tuples in a clustered index based on primary key by default?What does 'innodb_buffer_pool_reads' and 'innodb_buffer_pool_read_requests' actually mean?MySQL InnoDB: how to interpret this InnoDB monitor output of Next-Key locks?
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From MySQL documentation
Record Locks
A record lock is a lock on an index record. For example, SELECT c1 FROM t WHERE c1 = 10 FOR UPDATE; prevents any other transaction from inserting, updating, or deleting rows where the value of t.c1 is 10.
what does
index recordmean for cluster index?what does
index recordmean for secondary index?Is it a
key-valuepair in the B+ tree leaf node?Is it a data struct in MySQL source code?
Reference
This article seems useful, but I just don't understand.
https://blog.jcole.us/2013/01/10/btree-index-structures-in-innodb/
mysql index locking
asked 6 mins ago
Ryan LvRyan Lv
16318
add a comment |
From MySQL documentation
Record Locks
A record lock is a lock on an index record. For example, SELECT c1 FROM t WHERE c1 = 10 FOR UPDATE; prevents any other transaction from inserting, updating, or deleting rows where the value of t.c1 is 10.
what does
index recordmean for cluster index?what does
index recordmean for secondary index?Is it a
key-valuepair in the B+ tree leaf node?Is it a data struct in MySQL source code?
Reference
This article seems useful, but I just don't understand.
https://blog.jcole.us/2013/01/10/btree-index-structures-in-innodb/
mysql index locking
asked 6 mins ago
Ryan LvRyan Lv
16318
add a comment |
From MySQL documentation
Record Locks
A record lock is a lock on an index record. For example, SELECT c1 FROM t WHERE c1 = 10 FOR UPDATE; prevents any other transaction from inserting, updating, or deleting rows where the value of t.c1 is 10.
what does
index recordmean for cluster index?what does
index recordmean for secondary index?Is it a
key-valuepair in the B+ tree leaf node?Is it a data struct in MySQL source code?
Reference
This article seems useful, but I just don't understand.
https://blog.jcole.us/2013/01/10/btree-index-structures-in-innodb/
mysql index locking
asked 6 mins ago
Ryan LvRyan Lv
16318
From MySQL documentation
Record Locks
A record lock is a lock on an index record. For example, SELECT c1 FROM t WHERE c1 = 10 FOR UPDATE; prevents any other transaction from inserting, updating, or deleting rows where the value of t.c1 is 10.
what does
index recordmean for cluster index?what does
index recordmean for secondary index?Is it a
key-valuepair in the B+ tree leaf node?Is it a data struct in MySQL source code?
Reference
This article seems useful, but I just don't understand.
https://blog.jcole.us/2013/01/10/btree-index-structures-in-innodb/
mysql index locking
mysql index locking
asked 6 mins ago
Ryan LvRyan Lv
16318
asked 6 mins ago
Ryan LvRyan Lv
16318
edited 49 secs ago
Ryan Lv
asked 6 mins ago
Ryan LvRyan Lv
16318
asked 6 mins ago
Ryan LvRyan Lv
16318
asked 6 mins ago
Ryan LvRyan Lv
16318
16318
add a comment |
add a comment |
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