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https://dev.mysql.com/doc/refman/9.7/en/create-spatial-reference-system.html
srs_attribute: { NAME 'srs_name' | DEFINITION 'definition' | ORGANIZATION 'org_name' IDENTIFIED BY org_id | DESCRIPTION 'description' } srid, org_id: 32-bit unsigned integer This statement creates a spatial reference system (SRS) definition and ...
https://dev.mysql.com/doc/refman/9.7/en/datetime.html
The fractional part should always be separated from the rest of the time by a decimal point; no other fractional seconds delimiter is recognized. The only delimiter recognized between a date and time part and a fractional seconds part is the decimal ...This section describes their characteristics, how they are similar, and how they ...
https://dev.mysql.com/doc/refman/9.7/en/faqs-mysql-cluster.html
These distributed algorithms and protocols include global checkpointing, DDL (schema) changes, and node restart handling. When a node acts as the “leader” for any of these mechanisms, it is usually the point of coordination for the activity, and ... In the following section, we answer questions that are frequently asked about MySQL NDB Cluster and the NDB storage ...
https://dev.mysql.com/doc/refman/9.7/en/flow-control-functions.html
If expr2 or expr3 produce a floating-point value, the result is a floating-point value. The second syntax returns the result for the first condition that is true. If no comparison or condition is true, the result after ELSE is returned, or NULL if ...
https://dev.mysql.com/doc/refman/9.7/en/gis-class-geometry.html
Geometry values of types (LineString, MultiPoint, MultiLineString) are either simple or nonsimple. Whether the value is empty or nonempty A geometry is empty if it does not have any points. The dimensions of MultiPoint, MultiLineString, and ...It is ...
https://dev.mysql.com/doc/refman/9.7/en/gis-class-multicurve.html
A MultiCurve is simple if and only if all of its elements are simple; the only intersections between any two elements occur at points that are on the boundaries of both elements. A MultiCurve boundary is obtained by applying the “mod 2 union ... A ...
https://dev.mysql.com/doc/refman/9.7/en/gis-class-multipolygon.html
A MultiPolygon has no two Polygon elements that cross (crossing is also forbidden by the previous assertion), or that touch at an infinite number of points. A MultiPolygon is a MultiSurface object composed of Polygon elements. MultiPolygon Examples ...
https://dev.mysql.com/doc/refman/9.7/en/gis-class-polygon.html
The rings in the boundary of a Polygon may intersect at a Point, but only as a tangent. A Polygon has an interior that is a connected point set. A Polygon is a planar Surface representing a multisided geometry. It is defined by a single exterior ...
https://dev.mysql.com/doc/refman/9.7/en/group-replication-configuring-consistency-guarantees.html
Although the Transaction Synchronization Points section explains that conceptually there are two synchronization points from which you can choose: on read or on write, these terms were a simplification and the terms used in Group Replication are: ...The consistency level can have different effects on read-only and read/write transactions processed by the group as demonstrated in this ...
https://dev.mysql.com/doc/refman/9.7/en/group-replication-configuring-instances.html
Group Replication Settings At this point the option file ensures that the server is configured and is instructed to instantiate the replication infrastructure under a given configuration. Group members offer their standard SQL client connection to ... This section explains the configuration settings required for MySQL Server instances that you want to use for Group ...