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Rechercher dans le manuel MySQL
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https://dev.mysql.com/glossary.html
If related data is being updated across multiple tables, queries see either all old values or all new values, not a mix of old and new values. atomic DDL An atomic DDL statement is one that combines the data dictionary updates, storage engine ...
https://dev.mysql.com/create-table.html
If the NO_ZERO_DATE or NO_ZERO_IN_DATE SQL mode is enabled and a date-valued default is not correct according to that mode, CREATE TABLE produces a warning if strict SQL mode is not enabled and an error if strict mode is enabled. For example, with ... CREATE [TEMPORARY] TABLE [IF NOT EXISTS] tbl_name (create_definition,...) [table_options] [partition_options] CREATE [TEMPORARY] TABLE [IF NOT EXISTS] tbl_name [(create_definition,...)] [table_options] [partition_options] [IGNORE | REPLACE] [AS] query_expression CREATE [TEMPORARY] TABLE [IF NOT EXISTS] tbl_name { LIKE old_tbl_name | (LIKE old_tbl_name) } create_definition: col_name column_definition | {INDEX|KEY} [index_name] [index_type] (key_part,...) [index_option] ...
https://dev.mysql.com/partitioning-columns-range.html
RANGE COLUMNS partitioning columns are not restricted to integer columns; string, DATE and DATETIME columns can also be used as partitioning columns. Range columns partitioning is similar to range partitioning, but enables you to define partitions ...
https://dev.mysql.com/audit-log-file-formats.html
The timestamp is a UTC value in YYYY-MM-DDThh:mm:ss format indicating the date and time when the audit log plugin opened the file. Example: <RECORD_ID>12_2017-10-16T14:06:33</RECORD_ID> <TIMESTAMP> A string representing a UTC value in ... The MySQL ...
https://dev.mysql.com/create-event.html
This is an example of a minimal CREATE EVENT statement: CREATE EVENT myevent ON SCHEDULE AT CURRENT_TIMESTAMP + INTERVAL 1 HOUR DO UPDATE myschema.mytable SET mycol = mycol + 1; The previous statement creates an event named myevent. It specifies ...
https://dev.mysql.com/data-type-defaults.html
See Section 11.3.4, “Automatic Initialization and Updating for TIMESTAMP and DATETIME”. This means, for example, that you cannot set the default for a date column to be the value of a function such as NOW() or CURRENT_DATE. The exception is ...
https://dev.mysql.com/json.html
Partial Updates of JSON Values In MySQL 8.0, the optimizer can perform a partial, in-place update of a JSON column instead of removing the old document and writing the new document in its entirety to the column. This optimization can be performed ...
https://dev.mysql.com/time-zone-support.html
The session time zone setting does not affect values displayed by functions such as UTC_TIMESTAMP() or values in DATE, TIME, or DATETIME columns. If you want locale-specific arithmetic for DATE, TIME, or DATETIME values, convert them to UTC, perform ... This section describes the time zone settings maintained by MySQL, how to load the system tables required for named time support, how to stay current with time zone changes, and how to enable leap-second ...
https://dev.mysql.com/load-data.html
For date and time types, the column is set to the appropriate “zero” value for the type. These are the same values that result if you assign an empty string explicitly to a string, numeric, or date or time type explicitly in an INSERT or UPDATE ...INTO Syntax”.) To write data from a table to a file, use SELECT ...
https://dev.mysql.com/group-replication-enterprise-backup.html
Restore backup of s2 onto the host for s3: s3> mysqlbackup --defaults-file=/etc/my.cnf \ --datadir=/var/lib/mysql \ --backup-image=/backups/my.mbi_2206_1429 \ --backup-dir=/tmp/restore_`date +%d%m_%H%M` copy-back-and-apply-log Note The command above ... MySQL Enterprise Backup is a commercially-licensed backup utility for MySQL Server, available with MySQL Enterprise ...
Document created the 26/06/2006, last modified the 26/10/2018
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