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https://dev.mysql.com/doc/refman/8.0/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/8.0/en/show-columns.html
The data types may differ from what you expect them to be based on a CREATE TABLE statement because MySQL sometimes changes data types when you create or alter a table. These two statements are equivalent: SHOW COLUMNS FROM mytable FROM mydb; SHOW ... SHOW [EXTENDED] [FULL] {COLUMNS | FIELDS} {FROM | IN} tbl_name [{FROM | IN} db_name] [LIKE 'pattern' | WHERE expr] SHOW COLUMNS displays information about the columns in a given ...
https://dev.mysql.com/doc/refman/8.0/en/show-status.html
A global status variable may represent status for some aspect of the server itself (for example, Aborted_connects), or the aggregated status over all connections to MySQL (for example, Bytes_received and Bytes_sent). mysql> SHOW STATUS; ... SHOW ...
https://dev.mysql.com/doc/refman/8.0/en/silent-column-changes.html
In some cases, MySQL silently changes column specifications from those given in a CREATE TABLE or ALTER TABLE statement. MySQL maps certain data types used by other SQL database vendors to MySQL types. These might be changes to a data type, to ...
https://dev.mysql.com/doc/refman/8.0/en/source-thread-states.html
In MySQL 8.0.26, incompatible changes were made to instrumentation names, including the names of thread stages, containing the terms “master”, which is changed to “source”, “slave”, which is changed to “replica”, and “mts” (for ... The following list shows the most common states you may see in the State column for the Binlog Dump thread of the replication ...
https://dev.mysql.com/doc/refman/8.0/en/storage-engine-setting.html
You can set the default storage engine for the current session by setting the default_storage_engine variable: SET default_storage_engine=NDBCLUSTER; The storage engine for TEMPORARY tables created with CREATE TEMPORARY TABLE can be set separately ... When you create a new table, you can specify which storage engine to use by adding an ENGINE table option to the CREATE TABLE statement: -- ENGINE=INNODB not needed unless you have set a different -- default storage ...
https://dev.mysql.com/doc/refman/8.0/en/stored-routines.html
MySQL follows the SQL:2003 syntax for stored routines, which is also used by IBM's DB2. For answers to some commonly asked questions regarding stored routines in MySQL, see Section A.4, “MySQL 8.0 FAQ: Stored Procedures and Functions”. A stored ...
https://dev.mysql.com/doc/refman/8.0/en/string-functions-charset.html
MySQL has many operators and functions that return a string. This section answers the question: What is the character set and collation of such a string? For simple functions that take string input and return a string result as output, the output's ...
https://dev.mysql.com/doc/refman/8.0/en/symbolic-links-to-tables.html
Note Symbolic link support as described here, along with the --symbolic-links option that controls it, and is deprecated; expect these to be removed in a future version of MySQL. To instruct a running MySQL server to perform the symlinking, use the ...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/8.0/en/sys-format-statement.html
Given a string (normally representing an SQL statement), reduces it to the length given by the statement_truncate_len configuration option, and returns the result. Otherwise, the middle part of the string is replaced by an ellipsis (...). This ...