How to Use Metadata for Query Optimization In database management, optimization is a key aspect that ensures efficiency and speed in data retrieval. One advanced technique involves the use of metadata, a strateg
Group Replication recovery metadata. Group Replication recovery no longer depends on writing of view change events to the binary log to mark changes in group membership; instead, when all members of a group are MySQL version 8.3.0 or later, members share compressed recovery metadata, and no su...
A table created in NDB 7.6 and earlier contains metadata in the form of a compressed .frm file, which is no longer supported in MySQL 8.0. To facilitate online upgrades to NDB 8.0, NDB performs on-the-fly translation of this metadata and writes it into the MySQL Server's data dictionary...
Write_rows Commit Binary log • New Metadata – Easy to decode what is in the binary log. – Further facilitates connecting MySQL to other systems using the binary log stream. – Capturing data changes through the binary log is simplified. – Also more stats showing where the data is/was...
| memory/performance_schema/metadata_locks | 3 | 1.50 MiB | 512.00 KiB | 3 | 1.50 MiB | 512.00 KiB | | memory/innodb/trx0trx | 4899 | 1.35 MiB | 288 bytes | 4899 | 1.35 MiB | 288 bytes | | memory/performance_schema/table_lock_waits_summary_by_table | 1 | 1.34 MiB | 1.3...
MySQL 8.0 deliversNOWAITandSKIP LOCKEDalternatives in the SQL locking clause. Normally, when a row is locked due to anUPDATEor aSELECT ... FOR UPDATE, any other transaction will have to wait to access that locked row. In some use cases there is a need to either return immediately if a...
Learn more about the GIPK mode: Generated Invisible Primary Keys and Invisible Column Metadata.July 2023Autoscale IOPS in Azure Database for MySQL Flexible Server (General Availability) You can now scale IOPS on demand without having to pre-provision a certain amount of IOPS. With this feature...
In addition to several improvements to ensure greater accessibility for people with disabilities, the v8.14 release of SSMA for MySQL requires a project upgrade, as it now stores full source/target server version in the project metadata. SSMA v8.13 The v8.13 release of SSMA for MySQL contains ...
What should I do if "Connect server failed" is displayed due to abnormal registry? What should I do if there are three devices that cannot be identified in a single device manager? What should I do if the hdc server and client versions are inconsistent? What should I do if "Kill ...
Improvements toINFORMATION_SCHEMA.MySQL 5.1 provides much more information in its metadata database than was available in MySQL 5.0. New tables in theINFORMATION_SCHEMAdatabase includeFILES,EVENTS,PARTITIONS,PROCESSLIST,ENGINES, andPLUGINS. XML functions with XPath support.ExtractValue()returns the content...