![]() This example select book name and cover type of the books, if the cover type is default, set it to softcover, otherwise use the value as it is.Īdd a trigger that modifies the timestamp value for last_edit when a row is edited. ![]() ![]() Restore:# mysql -u root -p -h localhost myDatabase = '' and created_at = DATE_SUB(CURDATE(), INTERVAL 1 MONTH) MySQL is a popular, open-source, relational database that you can use to build all sorts of web databases from simple ones, cataloging some basic information like book recommendations to more complex data warehouses, hosting hundreds of thousands of records. Creates a backup of a set of SQL statements that can be used to recreate the original database object definitions and table data. mysql functions datediff day dateadd datesub dateformat dayname dayweek extract lastday date and time functions math abs acos asin atan ceil conv cos cot crc32 degrees exp floor ln ascii bin bitlenght char charlenght concat concatws elt exportset field findinset format frombase64 hex insert instr lcase left length like loadfile. Read more database administration and database programming tutorials. The MySQL cheat sheet includes the most commonly used commands and statements to help MySQL database users manage it more effectively and easily. MySQL cheat sheet provides you with one-page that contains the most commonly used MySQL commands and statements that help you work with MySQL more effectively. Connect to host 123.45.6.789 with username ken and enter password when promptedīackup: # mysqldump -u root -p -h localhost myDatabase > mysqlDBdump.sqlīackup a table: mysqldump -u root -p -h localhost myDatabase t1 t2 t3 > myTables.sql Then you will find our complete MySQL cheat sheet absolutely handy. Cheatsheet MySQL has an extensive library, scalable, extendable, interactive, and contains many in-built methods to compute common operations. Create new database for each webapp/environment: CREATE DATABASE newdb GRANT ALL PRIVILEGES ON newdb. MySQL has a reputation as an extremely fast database for read-heavy workloads, and it is great at read-heavy processes.
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