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https://dev.mysql.com/doc/refman/5.7/en/constraint-enum.html
ENUM and SET columns provide an efficient way to define columns that can contain only a given set of values. See Section 11.3.5, “The ENUM Type”, and Section 11.3.6, “The SET Type”. Unless strict mode is disabled (not recommended, but see ...
https://dev.mysql.com/doc/refman/5.7/en/controlling-query-plan-evaluation.html
The task of the query optimizer is to find an optimal plan for executing an SQL query. Because the difference in performance between “good” and “bad” plans can be orders of magnitude (that is, seconds versus hours or even days), most query ...
https://dev.mysql.com/doc/refman/5.7/en/create-table-select.html
You can create one table from another by adding a SELECT statement at the end of the CREATE TABLE statement: CREATE TABLE new_tbl [AS] SELECT * FROM orig_tbl; MySQL creates new columns for all elements in the SELECT. For example: mysql> CREATE ...
https://dev.mysql.com/doc/refman/5.7/en/creating-rsa-files-using-openssl.html
This section describes how to use the openssl command to set up the RSA key files that enable MySQL to support secure password exchange over unencrypted connections for accounts authenticated by the sha256_password plugin. Note There are easier ...
https://dev.mysql.com/doc/refman/5.7/en/cursor-restrictions.html
Server-side cursors are implemented in the C API using the mysql_stmt_attr_set() function. A server-side cursor enables a result set to be generated on the server side, but not transferred to the client except for those rows that the client ...
https://dev.mysql.com/doc/refman/5.7/en/data-directory-initialization.html
After MySQL is installed, the data directory must be initialized, including the tables in the mysql system database: For some MySQL installation methods, data directory initialization is automatic, as described in Section 2.9, “Postinstallation ...
https://dev.mysql.com/doc/refman/5.7/en/data-masking-function-reference.html
Table 6.35 MySQL Enterprise Data Masking and De-Identification Functions Name Description gen_blacklist() Perform dictionary term replacement gen_dictionary_drop() Remove dictionary from registry gen_dictionary_load() Load dictionary into registry ...
https://dev.mysql.com/doc/refman/5.7/en/data-masking-usage.html
Before using MySQL Enterprise Data Masking and De-Identification, install it according to the instructions provided at Section 6.5.2, “Installing or Uninstalling MySQL Enterprise Data Masking and De-Identification”. To use MySQL Enterprise Data ...
https://dev.mysql.com/doc/refman/5.7/en/data-size.html
Design your tables to minimize their space on the disk. This can result in huge improvements by reducing the amount of data written to and read from disk. Smaller tables normally require less main memory while their contents are being actively ...
https://dev.mysql.com/doc/refman/5.7/en/database-use.html
Once you know how to enter SQL statements, you are ready to access a database. Suppose that you have several pets in your home (your menagerie) and you would like to keep track of various types of information about them. You can do so by creating ...