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https://dev.mysql.com/doc/refman/5.7/en/information-schema.html
INFORMATION_SCHEMA provides access to database metadata, information about the MySQL server such as the name of a database or table, the data type of a column, or access privileges. Other terms that are sometimes used for this information are data ...
https://dev.mysql.com/doc/refman/5.7/en/innodb-benchmarking.html
If InnoDB is not the default storage engine, you can determine if your database server and applications work correctly with InnoDB by restarting the server with --default-storage-engine=InnoDB on the command line or with ...If a table relies on a ...
https://dev.mysql.com/doc/refman/5.7/en/optimize-numeric.html
If you are using numeric data, it is faster in many cases to access information from a database (using a live connection) than to access a text file. Information in the database is likely to be stored in a more compact format than in the text file, ... For unique IDs or other values that can be represented as either strings or numbers, prefer numeric columns to string ...Since large numeric values ...
https://dev.mysql.com/doc/refman/5.7/en/optimizing-innodb.html
This section explains how to optimize database operations for InnoDB tables. InnoDB is the storage engine that MySQL customers typically use in production databases where reliability and concurrency are important.
https://dev.mysql.com/doc/refman/5.7/en/replication-features-create-if-not-exists.html
IF NOT EXISTS statements are replicated: Every CREATE DATABASE IF NOT EXISTS statement is replicated, whether or not the database already exists on the source. Similarly, every CREATE TABLE IF NOT EXISTS statement without a SELECT is replicated, ...
https://dev.mysql.com/doc/refman/5.7/en/replication-features-drop-if-exists.html
The DROP DATABASE IF EXISTS, DROP TABLE IF EXISTS, and DROP VIEW IF EXISTS statements are always replicated, even if the database, table, or view to be dropped does not exist on the source. IF EXISTS statements for stored programs (stored ...This ...
https://dev.mysql.com/doc/refman/5.7/en/statement-optimization.html
The core logic of a database application is performed through SQL statements, whether issued directly through an interpreter or submitted behind the scenes through an API. The guidelines cover SQL operations that read and write data, the ...The ...
https://dev.mysql.com/doc/refman/5.7/en/bit-type.html
For example, assigning a value of b'101' to a BIT(6) column is, in effect, the same as assigning b'000101'. The BIT data type is used to store bit values. If you assign a value to a BIT(M) column that is less than M bits long, the value is padded ...
https://dev.mysql.com/doc/refman/5.7/en/collation-diagnostics.html
For example, the following message results if a collation definition contains a <aaa> tag: [Warning] Buffered warning: Unknown LDML tag: 'charsets/charset/collation/rules/aaa' If collation initialization is not possible, the server reports an ...In ... The MySQL server generates diagnostics when it finds problems while parsing the Index.xml file: Unknown tags are written to the error ...
https://dev.mysql.com/doc/refman/5.7/en/compiler-characteristics.html
In some cases, the compiler used to build MySQL affects the features available for use. The notes in this section apply for binary distributions provided by Oracle Corporation or that you compile yourself from source. icc (Intel C++ Compiler) ...