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https://dev.mysql.com/doc/refman/5.7/en/examples.html
Here are examples of how to solve some common problems with MySQL. Some of the examples use the table shop to hold the price of each article (item number) for certain traders (dealers). Supposing that each trader has a single fixed price per ...
https://dev.mysql.com/doc/refman/5.7/en/federated-description.html
When you create a table using one of the standard storage engines (such as MyISAM, CSV or InnoDB), the table consists of the table definition and the associated data. When you create a FEDERATED table, the table definition is the same, but the ...A ...
https://dev.mysql.com/doc/refman/5.7/en/gis-format-conversion-functions.html
See Section 12.16.3, “Functions That Create Geometry Values from WKT Values”, and Section 12.16.4, “Functions That Create Geometry Values from WKB Values”. MySQL supports the functions listed in this section for converting geometry values ...
https://dev.mysql.com/doc/refman/5.7/en/gis-geometry-class-hierarchy.html
The geometry classes define a hierarchy as follows: Geometry (noninstantiable) Point (instantiable) Curve (noninstantiable) LineString (instantiable) Line LinearRing Surface (noninstantiable) Polygon (instantiable) GeometryCollection (instantiable) ...All classes have properties, and instantiable classes may also have assertions (rules that define valid class ...
https://dev.mysql.com/doc/refman/5.7/en/group-by-handling.html
SQL-92 and earlier does not permit queries for which the select list, HAVING condition, or ORDER BY list refer to nonaggregated columns that are not named in the GROUP BY clause. SQL:1999 and later permits such nonaggregates per optional feature ...
https://dev.mysql.com/doc/refman/5.7/en/group-replication-deploying-in-single-primary-mode.html
This section explains how to create a replication group with three MySQL Server instances, each running on a different host machine. Figure 17.4 Group Architecture This tutorial explains how to get and deploy MySQL Server with the Group Replication ... Each of the MySQL server instances in a group can run on an independent physical host machine, which is the recommended way to deploy Group ...
https://dev.mysql.com/doc/refman/5.7/en/group-replication-failure-detection.html
In a replication group, each member has a point-to-point communication channel to each other member, creating a fully connected graph. Group Replication’s failure detection mechanism is a distributed service which is able to identify that a ...
https://dev.mysql.com/doc/refman/5.7/en/group-replication-monitoring.html
Replication channels created by the Group Replication plugin are listed here: group_replication_recovery: Used for replication changes related to distributed recovery. Note If you are monitoring one or more secondary instances using mysqladmin, you ... You can use the MySQL Performance Schema to monitor Group ...
https://dev.mysql.com/doc/refman/5.7/en/group-replication-network-partitioning.html
If misused, it could create an artificial split-brain scenario or block the entire system altogether. In that case, forcing a group membership list with s1 and s2 could create an artificial split-brain situation. The group needs to achieve ...
https://dev.mysql.com/doc/refman/5.7/en/help.html
HELP 'search_string' The HELP statement returns online information from the MySQL Reference Manual. Its proper operation requires that the help tables in the mysql database be initialized with help topic information (see Section 5.1.14, ...