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https://dev.mysql.com/doc/refman/5.7/en/extensions-to-ansi.html
MySQL Server supports some extensions that are likely not to be found in other SQL DBMSs. Be warned that if you use them, your code is not portable to other SQL servers. For example, MySQL Server recognizes the STRAIGHT_JOIN keyword in the ...
https://dev.mysql.com/doc/refman/5.7/en/begin-end.html
END syntax is used for writing compound statements, which can appear within stored programs (stored procedures and functions, triggers, and events). A compound statement can contain multiple statements, enclosed by the BEGIN and END keywords.
https://dev.mysql.com/doc/refman/5.7/en/connection-access.html
Rather, the password supplied by a user who is attempting to connect is encrypted (using the password hashing method implemented by the account authentication plugin). When you attempt to connect to a MySQL server, the server accepts or rejects the ...
https://dev.mysql.com/doc/refman/5.7/en/group-replication-status-variables.html
MySQL 5.7 supports one status variable providing information about Group Replication. This variable is described here: group_replication_primary_member Shows the primary member's UUID when the group is operating in single-primary mode. If the group ...
https://dev.mysql.com/doc/refman/5.7/en/information-schema-optimizer-trace-table.html
The OPTIMIZER_TRACE table provides information produced by the optimizer tracing capability for traced statements. The OPTIMIZER_TRACE table has these columns: QUERY The text of the traced statement. MISSING_BYTES_BEYOND_MAX_MEM_SIZE Each ...
https://dev.mysql.com/doc/refman/5.7/en/innodb-init-startup-configuration.html
The first decisions to make about InnoDB configuration involve the configuration of data files, log files, page size, and memory buffers, which should be configured before initializing InnoDB. Modifying the configuration after InnoDB is initialized ...
https://dev.mysql.com/doc/refman/5.7/en/replication-channels.html
In MySQL multi-source replication, a replica opens multiple replication channels, one for each replication source server. The replication channels represent the path of transactions flowing from a source to the replica. Each replication channel has ...
https://dev.mysql.com/doc/refman/5.7/en/replication-options-reference.html
The following two sections provide basic information about the MySQL command-line options and system variables applicable to replication and the binary log. Replication Options and Variables The command-line options and system variables in the ...
https://dev.mysql.com/doc/refman/5.7/en/optimizing-innodb-storage-layout.html
Use the VARCHAR data type instead of CHAR to store variable-length strings or for columns with many NULL values. A CHAR(N) column always takes N characters to store data, even if the string is shorter or its value is NULL. Once your data reaches a ...
https://dev.mysql.com/doc/refman/5.7/en/mysql-commands.html
mysql sends each SQL statement that you issue to the server to be executed. There is also a set of commands that mysql itself interprets. For a list of these commands, type help or \h at the mysql> prompt: mysql> help List of all MySQL commands: ...