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https://dev.mysql.com/doc/heatwave/en/mys-hw-metadata-queries.html
This section provides Information Schema and Performance Schema queries that you can use to retrieve MySQL HeatWave metadata. Note For queries that monitor MySQL HeatWave node status, memory usage, data loading, change propagation, and queries, see ...
https://dev.mysql.com/doc/connectors/en/connector-python-api-mysqlconnection-cmd-query.html
Syntax: cnx.cmd_query(statement) This method sends the given statement to the MySQL server and returns a result. The returned dictionary contains information depending on what kind of query was executed. If the query is a SELECT statement, the ...
https://dev.mysql.com/doc/connector-python/en/connector-python-api-mysqlconnection-cmd-query.html
Syntax: cnx.cmd_query(statement) This method sends the given statement to the MySQL server and returns a result. The returned dictionary contains information depending on what kind of query was executed. If the query is a SELECT statement, the ...
https://dev.mysql.com/doc/internals/en/com-query-response.html
Image description If it is not a valid Protocol::LengthEncodedInteger it is either a ERR_Packet or a Protocol::LOCAL_INFILE_Request. Image description 14.6.4.1.1 Text Resultset A Text Resultset is a possible COM_QUERY Response. It is made up of two ...
https://dev.mysql.com/doc/heatwave/en/mys-hw-metadata-queries-change-propagation.html
As of MySQL 9.2.1, TRANSACTIONAL indicates that change propagation is enabled for the table. In previous versions of MySQL, RAPID_LOAD_POOL_TRANSACTIONAL indicates that change propagation is enabled for the table.
https://dev.mysql.com/doc/refman/8.4/en/controlling-optimizer.html
MySQL provides optimizer control through system variables that affect how query plans are evaluated, switchable optimizations, optimizer and index hints, and the optimizer cost model. The server maintains histogram statistics about column values in ...
https://dev.mysql.com/doc/ndbapi/en/mccj-clusterj-_query-ordering.html
Ordering 4.3.1.20.1 Synopsis public static final class Query.Ordering extends, Enum<Ordering> {// Public Static Fields public static final Ordering ASCENDING ; public static final Ordering DESCENDING ;// Public Static Methods public static Ordering ...
https://dev.mysql.com/doc/mysql-em-plugin/en/myoem-quan-pages.html
This chapter describes the Query Analyzer and Memory Usage pages.
https://dev.mysql.com/doc/heatwave/en/mys-hw-metadata-queries-load-progress.html
The time required to load a table into MySQL HeatWave depends on data size. You can monitor load progress by issuing the following query, which returns a percentage value indicating load progress. mysql> SELECT VARIABLE_VALUE FROM ...
https://dev.mysql.com/doc/refman/8.4/en/estimating-performance.html
In most cases, you can estimate query performance by counting disk seeks. For small tables, you can usually find a row in one disk seek (because the index is probably cached). For bigger tables, you can estimate that, using B-tree indexes, you need ...