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https://dev.mysql.com/doc/refman/5.7/en/events-syntax.html
MySQL provides several SQL statements for working with scheduled events: New events are defined using the CREATE EVENT statement. The definition of an existing event can be changed by means of the ALTER EVENT statement. When a scheduled event is no ...
https://dev.mysql.com/doc/refman/5.7/en/examples.html
Here are examples of how to solve some common problems with MySQL. Some of the examples use the table shop to hold the price of each article (item number) for certain traders (dealers). Supposing that each trader has a single fixed price per ...
https://dev.mysql.com/doc/refman/5.7/en/information-schema-schemata-table.html
A schema is a database, so the SCHEMATA table provides information about databases. The SCHEMATA table has these columns: CATALOG_NAME The name of the catalog to which the schema belongs. The following statements are equivalent: SELECT SCHEMA_NAME ...
https://dev.mysql.com/doc/refman/5.7/en/innodb-redo-log-buffer.html
The log buffer is the memory area that holds data to be written to the log files on disk. The contents of the log buffer are periodically flushed to disk. A large log buffer enables large transactions to run without the need to write redo log data ...
https://dev.mysql.com/doc/refman/5.7/en/mysql-cluster-programs-ndb-print-schema-file.html
Usage ndb_print_schema_file file_name file_name is the name of a cluster schema file. For more information about cluster schema files, see NDB Cluster Data Node File System Directory. Like ndb_print_backup_file and ndb_print_sys_file (and unlike ...
https://dev.mysql.com/doc/refman/5.7/en/performance-schema-table-reference.html
The following table summarizes all available Performance Schema tables. For greater detail, see the individual table descriptions. Table 25.1 Performance Schema Tables Table Name Description Deprecated accounts Connection statistics per client ...
https://dev.mysql.com/doc/refman/5.7/en/programs.html
This chapter provides a brief overview of the MySQL command-line programs provided by Oracle Corporation. It also discusses the general syntax for specifying options when you run these programs. Most programs have options that are specific to their ...
https://dev.mysql.com/doc/refman/5.7/en/searching-on-two-keys.html
An OR using a single key is well optimized, as is the handling of AND. The one tricky case is that of searching on two different keys combined with OR: SELECT field1_index, field2_index FROM test_table WHERE field1_index = '1' OR field2_index = '1' ...
https://dev.mysql.com/doc/refman/5.7/en/show-privileges.html
SHOW PRIVILEGES SHOW PRIVILEGES shows the list of system privileges that the MySQL server supports. The exact list of privileges depends on the version of your server. row *************************** Privilege: Alter Context: Tables Comment: To ...
https://dev.mysql.com/doc/refman/5.7/en/stored-routines-metadata.html
To obtain metadata about stored routines: Query the ROUTINES table of the INFORMATION_SCHEMA database. Use the SHOW CREATE PROCEDURE and SHOW CREATE FUNCTION statements to see routine definitions. Use the SHOW PROCEDURE STATUS and SHOW FUNCTION ...