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https://dev.mysql.com/doc/refman/5.7/en/creating-spatial-columns.html
MySQL provides a standard way of creating spatial columns for geometry types, for example, with CREATE TABLE or ALTER TABLE. Spatial columns are supported for MyISAM, InnoDB, NDB, and ARCHIVE tables. Use the CREATE TABLE statement to create a table ...See also the notes about spatial indexes under Section 11.4.9, “Creating Spatial ...
https://dev.mysql.com/doc/refman/5.7/en/selecting-columns.html
If you do not want to see entire rows from your table, just name the columns in which you are interested, separated by commas.
https://dev.mysql.com/doc/refman/5.7/en/populating-spatial-columns.html
After you have created spatial columns, you can populate them with spatial data. Values should be stored in internal geometry format, but you can convert them to that format from either Well-Known Text (WKT) or Well-Known Binary (WKB) format. For ...
https://dev.mysql.com/doc/refman/5.7/en/example-maximum-column-group-row.html
Task: For each article, find the dealer or dealers with the most expensive price. Other possibilities for solving the problem are to use an uncorrelated subquery in the FROM clause or a LEFT JOIN.
https://dev.mysql.com/doc/refman/5.7/en/example-maximum-column-group.html
SELECT article, MAX(price) AS price FROM shop GROUP BY article ORDER BY article; +---------+-------+ | article | price | +---------+-------+ | 0001 | 3.99 | | 0002 | 10.99 | | 0003 | 1.69 | | 0004 | 19.95 | +---------+-------+ .
https://dev.mysql.com/doc/refman/5.7/en/example-maximum-column.html
“What is the highest item number?” SELECT MAX(article) AS article FROM shop; +---------+ | article | +---------+ | 4 | +---------+ .
https://dev.mysql.com/doc/refman/5.7/en/symbolic-links-to-tables.html
RENAME or RENAME TABLE and you do not move the table to another database, the symlinks in the database directory are renamed to the new names and the data file and index file are renamed accordingly. RENAME or RENAME TABLE to move a table to another ...For files used by tables for other storage engines, you may get strange problems if you try to use symbolic ...
https://dev.mysql.com/doc/refman/5.7/en/extensions-to-ansi.html
You can use standard system commands to back up, rename, move, delete, and copy tables that are managed by the MyISAM storage engine. For example, it is possible to rename a MyISAM table by renaming the .MYD, .MYI, and .frm files to which the table ... MySQL Server supports some extensions that are likely not to be found in other SQL ...
https://dev.mysql.com/doc/refman/5.7/en/alter-event.html
ALTER [DEFINER = user] EVENT event_name [ON SCHEDULE schedule] [ON COMPLETION [NOT] PRESERVE] [RENAME TO new_event_name] [ENABLE | DISABLE | DISABLE ON SLAVE] [COMMENT 'string'] [DO event_body] The ALTER EVENT statement changes one or more of the ...The syntax for each of the DEFINER, ON SCHEDULE, ON COMPLETION, COMMENT, ENABLE / DISABLE, and DO clauses is exactly the same as when used with CREATE ...
https://dev.mysql.com/doc/refman/5.7/en/glossary.html
auto-increment A property of a table column (specified by the AUTO_INCREMENT keyword) that automatically adds an ascending sequence of values in the column. It provides useful information for the query optimizer, because the column is known to be ...