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https://dev.mysql.com/doc/refman/8.0/en/mysql-cluster-replication-conflict-resolution.html
You must create any exceptions table before creating the data table with which it is to be used. Conflict Resolution Exceptions Table To use the NDB$OLD() conflict resolution function, it is also necessary to create an exceptions table corresponding ... Requirements Source Column Control Conflict Resolution Control Conflict Resolution Functions Conflict Resolution Exceptions Table Conflict Detection Status Variables Examples When using a replication setup involving multiple sources (including circular replication), it is possible that different sources may try to update the same row on the replica with different ...
https://dev.mysql.com/doc/refman/8.0/en/monitor-alter-table-performance-schema.html
You can monitor ALTER TABLE progress for InnoDB tables using Performance Schema. There are seven stage events that represent different phases of ALTER TABLE. Each stage event reports a running total of WORK_COMPLETED and WORK_ESTIMATED for the ...
https://dev.mysql.com/doc/refman/8.0/en/optimizer-hints.html
For example, you can enable an optimization for one table in a statement and disable the optimization for a different table. References to table and index names follow the usual identifier case-sensitivity rules (see Section 11.2.3, “Identifier ...
https://dev.mysql.com/doc/refman/8.0/en/repair-table.html
If you use USE_FRM for a table that was created by a different version of the MySQL server than the one you are currently running, REPAIR TABLE does not attempt to repair the table. With myisamchk --safe-recover, you can also use options that REPAIR ...[QUICK] [EXTENDED] [USE_FRM] REPAIR TABLE repairs a possibly corrupted table, for certain storage engines ...
https://dev.mysql.com/doc/refman/8.0/en/derived-table-optimization.html
This is similar to automatic indexing of derived tables, except that if the CTE is referenced multiple times, the optimizer may create multiple indexes, to speed up access by each reference in the most appropriate way. To indicate one-time ...The ...
https://dev.mysql.com/doc/refman/8.0/en/innodb-information-schema-system-tables.html
The first index is GEN_CLUST_INDEX, which is a clustered index created by InnoDB if the table does not have a user-defined clustered index. If a file-per-table tablespace were created in a location outside the MySQL data directory using the DATA ...
https://dev.mysql.com/doc/refman/8.0/en/innodb-file-per-table-tablespaces.html
File-per-table tablespace characteristics are described under the following topics in this section: File-Per-Table Tablespace Configuration File-Per-Table Tablespace Data Files File-Per-Table Tablespace Advantages File-Per-Table Tablespace ... A ...
https://dev.mysql.com/doc/refman/8.0/en/privileges-provided.html
Renaming a table requires ALTER and DROP on the old table, CREATE, and INSERT on the new table. CREATE Enables use of statements that create new databases and tables. CREATE TABLESPACE Enables use of statements that create, alter, or drop ... The ...
https://dev.mysql.com/doc/refman/8.0/en/mysql-cluster-ndbd-definition.html
(NDB 8.0.13) This parameter specifies the directory where all files created for metadata, REDO logs, UNDO logs (for Disk Data tables), and data files are placed. Consider this table definition: CREATE TABLE example ( a INT NOT NULL, b INT NOT NULL, ...Information about configuration parameters specific to NDB Cluster Disk Data tables can be found later in this section (see Disk Data Configuration ...
https://dev.mysql.com/doc/refman/8.0/en/rename-table.html
You must have ALTER and DROP privileges for the original table, and CREATE and INSERT privileges for the new table. row *************************** Table: t3 Create Table: CREATE TABLE `t3` ( `i1` int(11) DEFAULT NULL, `i2` int(11) DEFAULT NULL, ...