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https://dev.mysql.com/doc/refman/8.0/en/spatial-aggregate-functions.html
The result is the narrowest MultiXxx or GeometryCollection value possible, with the result type determined from the non-NULL geometry arguments as follows: If all arguments are Point values, the result is a MultiPoint value. MySQL supports ...
https://dev.mysql.com/doc/refman/8.0/en/charset-cp932.html
Some cp932 characters have two different code points, both of which convert to the same Unicode code point. When converting from Unicode back to cp932, one of the code points must be selected. (See http://support.microsoft.com/kb/170559/EN-US/.) The ... Why is cp932 needed? In MySQL, the sjis character set corresponds to the Shift_JIS character set defined by IANA, which supports JIS X0201 and JIS X0208 ...
https://dev.mysql.com/doc/refman/8.0/en/charset-gb18030.html
Characteristics of the MySQL gb18030 Character Set Supports all code points defined by the GB 18030-2005 standard. Unassigned code points in the ranges (GB+8431A439, GB+90308130) and (GB+E3329A36, GB+EF39EF39) are treated as '?' (0x3F). Non-Chinese ... In MySQL, the gb18030 character set corresponds to the “Chinese National Standard GB 18030-2005: Information technology — Chinese coded character set”, which is the official character set of the People's Republic of China ...
https://dev.mysql.com/doc/refman/8.0/en/data-types.html
For floating-point and fixed-point types, M is the total number of digits that can be stored (the precision). D applies to floating-point and fixed-point types and indicates the number of digits following the decimal point (the scale). fsp applies ... MySQL supports SQL data types in several categories: numeric types, date and time types, string (character and byte) types, spatial types, and the JSON data ...
https://dev.mysql.com/doc/refman/8.0/en/gis-class-curve.html
A Curve is a one-dimensional geometry, usually represented by a sequence of points. Particular subclasses of Curve define the type of interpolation between points. A Curve is simple if it does not pass through the same point twice, with the ...
https://dev.mysql.com/doc/refman/8.0/en/precision-math-examples.html
The floating-point calculation introduces small errors: +--------+------------------+ | d | f | +--------+------------------+ | 1.0000 | 0.99999999999991 | +--------+------------------+ Example 2. Consider these statements: mysql> CREATE TABLE t (i ... This section provides some examples that show precision math query results in ...
https://dev.mysql.com/doc/refman/8.0/en/replication-options-source.html
The highest value present in the col column prior to the INSERT is 31, and the next available value in the AUTO_INCREMENT series is 35, so the inserted values for col begin at that point and the results are as shown for the SELECT query. This ...
https://dev.mysql.com/doc/refman/8.0/en/start-replica.html
The UNTIL clause makes the replica start replication, then process transactions up to the point that you specify in the UNTIL clause, then stop again. The UNTIL clause can be used to make a replica proceed until just before the point where you want ... START REPLICA [thread_types] [until_option] [connection_options] [channel_option] thread_types: [thread_type [, thread_type] ...
https://dev.mysql.com/doc/refman/8.0/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/8.0/en/group-replication-adding-instances.html
At this point, the group has one member in it, server s1, which has some data in it. At this point server s2 only needs to be added to the already existing group. Once this process completed, s2 could join the group as a member, and at this point ...It is now time to expand the group by adding the other two servers configured ...