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https://dev.mysql.com/doc/refman/8.4/en/identifiers.html
Certain objects within MySQL, including database, table, index, column, alias, view, stored procedure, partition, tablespace, resource group and other object names are known as identifiers. Use of the dollar sign as the first character in the ...
https://dev.mysql.com/doc/refman/8.4/en/implicit-commit.html
Data definition language (DDL) statements that define or modify database objects. SELECT.) Statements that implicitly use or modify tables in the mysql database. The statements listed in this section (and any synonyms for them) implicitly end any ...
https://dev.mysql.com/doc/refman/8.4/en/information-schema-innodb-tables-table.html
NAME The name of the table, preceded by the schema (database) name where appropriate (for example, test/t1). Names of databases and user tables are in the same case as they were originally defined, possibly influenced by the lower_case_table_names ...For related usage information and examples, see Section 17.15.3, “InnoDB INFORMATION_SCHEMA Schema Object ...
https://dev.mysql.com/doc/refman/8.4/en/information-schema-optimization.html
Applications that monitor databases may make frequent use of INFORMATION_SCHEMA tables. Note Comparison behavior for database and table names in INFORMATION_SCHEMA queries might differ from what you expect. This includes values such as database and ...To write queries for these tables most efficiently, use the following general guidelines: Try to query only INFORMATION_SCHEMA tables that are views on data dictionary ...
https://dev.mysql.com/doc/refman/8.4/en/innodb-benefits.html
InnoDB tables have the following benefits: If the server unexpectedly exits because of a hardware or software issue, regardless of what was happening in the database at the time, you don't need to do anything special after restarting the database.
https://dev.mysql.com/doc/refman/8.4/en/innodb-checkpoints.html
InnoDB flushes modified database pages from the buffer pool in small batches. It knows that all modifications to the database before the label are present in the disk image of the database. Then InnoDB scans the log files forward from the ... Making ...
https://dev.mysql.com/doc/refman/8.4/en/innodb-compression-syntax-warnings.html
The “non-strict” behavior lets you import a mysqldump file into a database that does not support compressed tables, even if the source database contained compressed tables. To import the dump file into a new database, and have the tables ...
https://dev.mysql.com/doc/refman/8.4/en/innodb-multi-versioning.html
Internally, InnoDB adds three fields to each row stored in the database: A 6-byte DB_TRX_ID field indicates the transaction identifier for the last transaction that inserted or updated the row. Update undo logs are used also in consistent reads, but ...It keeps information about old versions of changed rows to support transactional features such as concurrency and ...
https://dev.mysql.com/doc/refman/8.4/en/innodb-persistent-stats.html
17.8.10.1.5 InnoDB Persistent Statistics Tables The persistent statistics feature relies on the internally managed tables in the mysql database, named innodb_table_stats and innodb_index_stats. row *************************** database_name: sakila ... The persistent optimizer statistics feature improves plan stability by storing statistics to disk and making them persistent across server restarts so that the optimizer is more likely to make consistent choices each time for a given ...
https://dev.mysql.com/doc/refman/8.4/en/introduction.html
The MySQL software delivers a very fast, multithreaded, multi-user, and robust SQL (Structured Query Language) database server. The following list describes some sections of particular interest in this manual: For a discussion of MySQL Database ...