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https://dev.mysql.com/doc/workbench/en/wb-performance-explain.html
No usable indexes were found for the table, which forces the optimizer to search every row. The visual explain feature generates and displays a visual representation of the MySQL EXPLAIN statement by using extended information available in the ...
https://dev.mysql.com/doc/internals/en/event-flags.html
LOG_EVENT_THREAD_SPECIFIC_F = 0x4 (New in 4.1.0) Used only by mysqlbinlog (not by the replication code at all) to be able to deal properly with temporary tables. mysqlbinlog displays events from the binary log in printable format, so that you can ...
https://dev.mysql.com/doc/internals/en/myisam-files.html
Some notes about MyISAM file handling: If a table is never updated, MySQL will never touch the table files, so it would never be marked as closed or corrupted. If a table is marked readonly by the OS, it will only be opened in readonly mode. When a ...
https://dev.mysql.com/doc/ndbapi/en/mccj-clusterj-_query.html
Table 4.37 deletePersistentAll() Parameter Description return the number of instances deleted 4.3.1.19.9 execute(Map<String, ?>) public abstract Results<E> execute(Map<String, ?> parameters); Execute the query with one or more named parameters. A ...
https://dev.mysql.com/doc/ndbapi/en/mccj-clusterj-columnmetadata.html
Table 4.17 charsetName() Parameter Description return the charset name 4.3.1.11.2 columnType() public abstract ColumnType columnType(); Return the type of the column. Table 4.18 columnType() Parameter Description return the type of the column ...
MySQL NDB Cluster API Developer Guide :: 4.2.2.5 ClusterJ Mappings Between MySQL and Java Data Types
https://dev.mysql.com/doc/ndbapi/en/mccj-using-clusterj-mappings.html
Note Since Java does not have native unsigned data types, UNSIGNED columns should be avoided in table schemas if possible. The following tables show the mappings used by ClusterJ between common Java data types and MySQL column types. The following ... ClusterJ provides mappings for all of the common MySQL database types to Java ...
https://dev.mysql.com/doc/ndbapi/en/ndb-examples-basic-read.html
This example illustrates basic retrieval of one or more rows from an NDB table using the NdbRecord interface and an NdbScanOperation. We assume that you have already created and populated the basic table, perhaps using the row insertion example ...
https://dev.mysql.com/doc/ndbapi/en/ndb-examples-synchronous-transactions.html
It first creates a database ndb_examples and a table api_simple (if these objects do not already exist) using the MySQL C API with an SQL node, then performs a series of basic data operations (insert, update, read, and select) on this table using ...
https://dev.mysql.com/doc/ndbapi/en/ndb-nodejs-examples-requirements.html
All of the examples use a sample table named tweet, in the test database. The software requirements for running the examples found in the next few sections are as follows: A working Node.js installation Working installations of the ndb and mysql-js ...
https://dev.mysql.com/doc/mysql-em-plugin/en/myoem-cluster-metric-mysqlserver-dmlstatementactivity-category.html
Table 8.4 DML Statement Activity Metrics NameDescriptionTarget Name Name of the OEM Target Call Procedure (Delta) The total number of CALL statements executed. Delete Multi (Delta) The total number of multi-table DELETE statements executed. Lock ...