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https://dev.mysql.com/doc/mysql-monitor/8.0/en/mem-qanal-using.html
The MySQL Query Analyzer enables you to monitor SQL statements executed on a MySQL server and displays the details of each query, number of executions and execution times. Similar queries with different literal values are combined for reporting ...
https://dev.mysql.com/doc/refman/8.4/en/limit-optimization.html
MySQL sometimes optimizes a query that has a LIMIT row_count clause and no HAVING clause: If you select only a few rows with LIMIT, MySQL uses indexes in some cases when normally it would prefer to do a full table scan. If you combine LIMIT ... If ...
https://dev.mysql.com/doc/mysql-monitor/8.0/en/mem-features-qrti.html
Reading QRTi Values The queries listed on the Query Analyzer page also have a color-coded pie chart representing a breakdown of the values used in the QRTi calculation; green representing the optimal percentage, yellow the acceptable percentage, and ...It is a "quality of service" measurement for each query, and uses the Apdex formula for that calculation: Apdex on ...
https://dev.mysql.com/doc/refman/8.4/en/information-schema-optimization.html
By default, MySQL retrieves cached values for those columns from the mysql.index_stats and mysql.innodb_table_stats dictionary tables when the columns are queried, which is more efficient than retrieving statistics directly from the storage engine.
https://dev.mysql.com/doc/heatwave/en/mys-hw-materialized-views.html
This topic describes how to create materialized views on MySQL HeatWave, which is supported as of MySQL 9.5.0. Verify if the query is offloaded to MySQL HeatWave for processing. mysql> CREATE MATERIALIZED VIEW airport_US AS SELECT airport.* FROM ...
https://dev.mysql.com/doc/refman/8.4/en/execution-plan-information.html
Depending on the details of your tables, columns, indexes, and the conditions in your WHERE clause, the MySQL optimizer considers many techniques to efficiently perform the lookups involved in an SQL query. Your goals are to recognize the aspects ...A query on a huge table can be performed without reading all the rows; a join involving several tables can be performed without comparing every combination of ...
https://dev.mysql.com/doc/heatwave/en/mys-hw-using-views.html
This topic describes how to run queries on views using MySQL HeatWave and verify if those queries are offloaded to the MySQL HeatWave secondary engine for accelerated processing. Verify if the query is offloaded to MySQL HeatWave for processing. To ...
https://dev.mysql.com/doc/c-api/8.4/en/mysql-query.html
int mysql_query(MYSQL *mysql, const char *stmt_str) Description Executes the SQL statement pointed to by the null-terminated string stmt_str. Normally, the string must consist of a single SQL statement without a terminating semicolon (;) or \g. If ...
https://dev.mysql.com/doc/c-api/8.4/en/mysql-real-query.html
int mysql_real_query(MYSQL *mysql, const char *stmt_str, unsigned long length) Description Note mysql_real_query() is a synchronous function. Its asynchronous counterpart is mysql_real_query_nonblocking(), for use by applications that require ...If ...
https://dev.mysql.com/doc/heatwave-aws/en/heatwave-aws-creating-endpoint.html
Creating an Endpoint for a Query PrivateLink 6.1.3 Creating an Endpoint for a Query PrivateLink Use the AWS Management Console to create an endpoint in the same region and availability zone as the DB System. A VPC with subnet(s) in the same ...