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https://dev.mysql.com/doc/refman/8.4/en/examples.html
Some of the examples use the table shop to hold the price of each article (item number) for certain traders (dealers). Here are examples of how to solve some common problems with MySQL. Supposing that each trader has a single fixed price per ...
https://dev.mysql.com/doc/refman/8.4/en/query-attributes.html
INSTALL COMPONENT loads the component, and also registers it in the mysql.component system table to cause it to be loaded during subsequent server startups. To uninstall the query_attributes component, use this statement: UNINSTALL COMPONENT ... The ...
https://dev.mysql.com/doc/refman/8.4/en/charset-collation-implementations.html
MySQL implements several types of collations: Simple collations for 8-bit character sets This kind of collation is implemented using an array of 256 weights that defines a one-to-one mapping from character codes to weights. It is a case-insensitive ...
https://dev.mysql.com/doc/internals/en/innodb-field-contents.html
I made a table with this definition: CREATE TABLE T (FIELD1 VARCHAR(3), FIELD2 VARCHAR(3), FIELD3 VARCHAR(3)) Type=InnoDB; To understand what follows, you must know that table T has six columns — not three — because InnoDB automatically added ...
https://dev.mysql.com/doc/relnotes/connector-net/en/news-8-0-21.html
(Bug #30029732, Bug #96143) Columns of type BIGINT in a table that was loaded using MySqlDataReader did not include the UNSIGNED flag, even though UNSIGNED was specified in the CREATE TABLE statement. (Bug #30791289, Bug #98322) An expected empty ...
https://dev.mysql.com/doc/refman/8.4/en/date-and-time-type-syntax.html
For example: CREATE TABLE t1 (t TIME(3), dt DATETIME(6), ts TIMESTAMP(0)); The fsp value, if given, must be in the range 0 to 6. (This differs from the standard SQL default of 6, for compatibility with previous MySQL versions.) Any TIMESTAMP or ...
https://dev.mysql.com/doc/refman/8.4/en/entering-queries.html
At this point, it is more important to find out a little about how to issue queries than to jump right in creating tables, loading data into them, and retrieving data from them. Normally, column labels are the names of the columns you fetch from ...
https://dev.mysql.com/doc/refman/8.4/en/fetching-spatial-data.html
Fetching spatial data in internal format: Fetching geometry values using internal format can be useful in table-to-table transfers: CREATE TABLE geom2 (g GEOMETRY) SELECT g FROM geom; Fetching spatial data in WKT format: The ST_AsText() function ...
https://dev.mysql.com/doc/refman/8.4/en/information-schema-check-constraints-table.html
CREATE TABLE supports the core features of table and column CHECK constraints; the CHECK_CONSTRAINTS table provides information about these constraints. The CHECK_CONSTRAINTS table has these columns: CONSTRAINT_CATALOG The name of the catalog to ...
https://dev.mysql.com/doc/refman/8.4/en/mathematical-functions.html
One implication of this behavior is that for equal argument values, RAND(N) returns the same value each time, and thus produces a repeatable sequence of column values. It is a fast way to generate random numbers on demand that is portable between ...