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https://dev.mysql.com/doc/refman/5.7/en/replication-options.html
Command-Line Format --server-id=# System Variable server_id Scope Global Dynamic Yes Type Integer Default Value 0 Minimum Value 0 Maximum Value 4294967295 This variable specifies the server ID. Once START SLAVE has been executed, the value of the ...
https://dev.mysql.com/doc/refman/5.7/en/mysql-cluster-online-add-node-basics.html
Execute one or more CREATE NODEGROUP commands in the NDB Cluster management client to create the new node group or node groups to which the new data nodes belong. Note This needs to be done only for tables already existing at the time the new node ... In this section, we list the basic steps required to add new data nodes to an NDB ...
https://dev.mysql.com/doc/refman/5.7/en/identifiers.html
Section 9.2.1, “Identifier Length Limits”, indicates the maximum length of each type of identifier. The identifier quote character is the backtick (`): mysql> SELECT * FROM `select` WHERE `select`.id > 100; If the ANSI_QUOTES SQL mode is ...
https://dev.mysql.com/doc/refman/5.7/en/xa-statements.html
If you use any of those statements but specify an xid value that does not correspond to some existing XA transaction, an error occurs. To perform XA transactions in MySQL, use the following statements: XA {START|BEGIN} xid [JOIN|RESUME] XA END xid ...
https://dev.mysql.com/doc/refman/5.7/en/sorted-index-builds.html
InnoDB performs a bulk load instead of inserting one index record at a time when creating or rebuilding indexes. In the second phase, with one or more runs written to the temporary intermediate file, a merge sort is performed on all entries in the ...This method of index creation is also known as a sorted index ...
https://dev.mysql.com/doc/refman/5.7/en/generated-column-index-optimizations.html
The column is also indexed and the optimizer can take that index into account during execution plan construction. For example: CREATE TABLE t1 (f1 INT, gc INT AS (f1 + 1) STORED, INDEX (gc)); The generated column, gc, is defined as the expression f1 ...
https://dev.mysql.com/doc/refman/5.7/en/information-schema-routines-table.html
DATETIME_PRECISION For stored function temporal return values, the fractional seconds precision. CHARACTER_MAXIMUM_LENGTH For stored function string return values, the maximum length in characters. CHARACTER_OCTET_LENGTH For stored function string ... The ROUTINES table provides information about stored routines (stored procedures and stored ...
https://dev.mysql.com/doc/refman/5.7/en/information-schema-views-table.html
IS_UPDATABLE MySQL sets a flag, called the view updatability flag, at CREATE VIEW time. You must have the SHOW VIEW privilege to access this table. The VIEWS table has these columns: TABLE_CATALOG The name of the catalog to which the view belongs.
https://dev.mysql.com/doc/refman/5.7/en/show-profile.html
For example, SHOW PROFILING is an illegal statement, and a syntax error occurs if you try to execute it, but it shows up in the profiling list. Without the FOR QUERY n clause, the output pertains to the most recently executed statement. Note The ...
https://dev.mysql.com/doc/refman/5.7/en/security-against-attack.html
The output of mysqladmin processlist and SHOW PROCESSLIST shows the text of any statements currently being executed, so any user who is permitted to see the server process list might be able to see statements issued by other users such as UPDATE ...