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https://dev.mysql.com/doc/refman/5.7/en/index-page-merge-threshold.html
Setting MERGE_THRESHOLD for a Table You can set the MERGE_THRESHOLD value for a table using the table_option COMMENT clause of the CREATE TABLE statement. row *************************** INDEX_ID: 91 NAME: id_index TABLE_ID: 68 TYPE: 0 N_FIELDS: 1 ...If the “page-full” percentage for an index page falls below the MERGE_THRESHOLD value when a row is deleted or when a row is shortened by an UPDATE operation, InnoDB attempts to merge the index page with a neighboring index ...
https://dev.mysql.com/doc/refman/5.7/en/partitioning-limitations-partitioning-keys-unique-keys.html
This section discusses the relationship of partitioning keys with primary keys and unique keys. The rule governing this relationship can be expressed as follows: All columns used in the partitioning expression for a partitioned table must be part ...
https://dev.mysql.com/doc/refman/5.7/en/replication-features-differing-tables.html
A column's default value is determined by a number of factors, including its type, whether it is defined with a DEFAULT option, whether it is declared as NULL, and the server SQL mode in effect at the time of its creation; for more information, see ... Source and target tables for replication do not have to be ...
https://dev.mysql.com/doc/refman/5.7/en/windows-symbolic-links.html
To do this, create a symbolic link in the MySQL data directory that points to D:\data\mydb. However, before creating the symbolic link, make sure that the D:\data\mydb directory exists by creating it if necessary. On Windows, you can create a ... On ...
https://dev.mysql.com/doc/refman/5.7/en/converting-tables-to-innodb.html
When you convert MyISAM tables that are large, frequently accessed, and hold vital data, investigate and consider the innodb_file_per_table, innodb_file_format, and innodb_page_size variables, and the ROW_FORMAT and KEY_BLOCK_SIZE clauses of the ...
https://dev.mysql.com/doc/refman/5.7/en/data-masking-installation.html
This section describes how to install or uninstall MySQL Enterprise Data Masking and De-Identification, which is implemented as a plugin library file containing a plugin and several loadable functions. For general information about installing or ...
https://dev.mysql.com/doc/refman/5.7/en/innodb-file-per-table-tablespaces.html
File-per-table tablespace characteristics are described under the following topics in this section: File-Per-Table Tablespace Configuration File-Per-Table Tablespace Data Files File-Per-Table Tablespace Advantages File-Per-Table Tablespace ... A ...
https://dev.mysql.com/doc/refman/5.7/en/mysql-cluster-programs-ndb-desc.html
Three of the table properties that can be set using NDB_TABLE comments embedded in CREATE TABLE and ALTER TABLE statements are also visible in ndb_desc output. You can check that the ALTER TABLE statement has the desired effect using SHOW CREATE ...
https://dev.mysql.com/doc/refman/5.7/en/timestamp-initialization.html
CREATE TABLE t1 ( ts TIMESTAMP DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP, dt DATETIME DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP ); With a DEFAULT clause but no ON UPDATE CURRENT_TIMESTAMP clause, the column has the given ...
https://dev.mysql.com/doc/refman/5.7/en/enterprise-encryption-functions.html
This example creates a 2,048-bit DSA private key, then derives a public key from the private key: SET @priv = create_asymmetric_priv_key('DSA', 2048); SET @pub = create_asymmetric_pub_key('DSA', @priv); For an example showing DH key generation, see ... MySQL Enterprise Encryption functions have these general characteristics: For arguments of the wrong type or an incorrect number of arguments, each function returns an ...