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https://dev.mysql.com/partitioning-limitations-partitioning-keys-unique-keys.html
This section discusses the relationship of partitioning keys with primary keys and unique keys. The rule governing this relationship can be expressed as follows: All columns used in the partitioning expression for a partitioned table must be part ...
https://dev.mysql.com/partitioning-limitations-storage-engines.html
The maximum amount of fixed-size data that can be stored per partition in an NDB table is 128 TB. In MySQL 8.0, partitioning support is not actually provided by the MySQL Server, but rather by a table storage engine's own or native partitioning ...
https://dev.mysql.com/performance-schema-examples.html
At each iteration, the Performance Schema output, particularly the events_waits_history_long table, will contain less and less “noise” caused by nonsignificant instruments, and given that this table has a fixed size, will contain more and more ... The Performance Schema is a tool to help a DBA do performance tuning by taking real measurements instead of “wild guesses.” This section demonstrates some ways to use the Performance Schema for this ...
https://dev.mysql.com/performance-schema-statement-digests.html
The MySQL server is capable of maintaining statement digest information. The digesting process converts each SQL statement to normalized form (the statement digest) and computes a SHA-256 hash value (the digest hash value) from the normalized ...
https://dev.mysql.com/performance-schema-timing.html
Events are collected by means of instrumentation added to the server source code. Instruments time events, which is how the Performance Schema provides an idea of how long events take. It is also possible to configure instruments not to collect ...
https://dev.mysql.com/perl-support-problems.html
You should be able to fix this problem by one of the following methods: Copy libmysqlclient.so to the directory where your other shared libraries are located (probably /usr/lib or /lib). If Perl reports that it cannot find the ../mysql/mysql.so ...
https://dev.mysql.com/precision-math.html
MySQL provides support for precision math: numeric value handling that results in extremely accurate results and a high degree control over invalid values. Precision math is based on these two features: SQL modes that control how strict the server ...
https://dev.mysql.com/replication-features-slaveerrors.html
If a statement produces the same error (identical error code) on both the master and the slave, the error is logged, but replication continues. If a statement produces different errors on the master and the slave, the slave SQL thread terminates, ...
https://dev.mysql.com/replication-group-member-stats-table.html
The replication_group_member_stats table has the following columns: CHANNEL_NAME Name of the Group Replication channel VIEW_ID Current view identifier for this group. This has a different value for each member in the group. This also serves as a key ...
https://dev.mysql.com/replication-privilege-checks-recover.html
If you can identify why the event took place and there are no security considerations, proceed to fix the error as described below. If a privilege check against the PRIVILEGE_CHECKS_USER account fails, the transaction is not executed and ...
Document created the 26/06/2006, last modified the 26/10/2018
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