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5.12.1 Viewing MySQL Trace Information
https://dev.mysql.com/doc/connector-net/en/connector-net-programming-tracing-mysql.html
For example, a custom trace listener can be created to perform active monitoring of the MySQL event messages, rather than simply writing these to an output device. It is also possible to add listeners to the MySQL Trace Source at runtime. This can be done with the following code: Press CTRL+C to copy.
MySQL :: MySQL Internals Manual :: 8.14 Example
https://dev.mysql.com/doc/internals/en/tracing-example.html
Press CTRL+C to copy. "steps": [ { "join_preparation": {. This is a join's preparation. Press CTRL+C to copy. "select#": 1, for the first SELECT of the statement (which has only one, here). Here are steps of the join's preparation: Press CTRL+C to copy. "steps": [ { "expanded_query": "/* select#1 */ select \ sum (`test`.`alias2`.`col_varchar_nokey`) AS \ `SUM …
MySQL: The Optimizer Trace
https://dev.mysql.com/doc/dev/mysql-server/latest/PAGE_OPT_TRACE.html
MySQL :: MySQL Internals Manual :: 8.4 Traceable Queries
https://dev.mysql.com/doc/internals/en/traceable-queries.html
MySQL Internals Manual / Tracing the Optimizer / Traceable Queries 8.4 Traceable Queries They are: SELECT; INSERT or REPLACE (with VALUES or SELECT); UPDATE/DELETE and their multi-table variants; all the previous ones prefixed by EXPLAIN; SET (unless it manipulates the optimizer_trace system variable); DO; DECLARE/CASE/IF/RETURN (stored routines language …
Tracing MySQL Protocol from Client Side - Oracle Blogs
https://blogs.oracle.com/mysql/post/tracing-mysql-protocol-from-client-side
Since introduction of PERFORMANCE_SCHEMA in MySQL Server, it is possible to trace what happens inside the server when it executes client queries. The client-side protocol tracing framework is a similar mechanism in the MySQL Client Library. It allows tracing communication of the client with the server. The infrastructure has been included in MySQL 5.7.2
Basic MySQL Optimizer Tracing for Data Performance
https://distributeddba.com/blog/database-administration/data-performance/basic-mysql-optimizer-tracing/
Tracing MySQL’s optimizer. To trace the MySQL optimizer, you have to turn it on for your session. This is achieved by setting optimizer_trace="enabled=on". Enable MySQL optimizer tracing. Be warned though, the output can be long. Then you run the query you want to trace. You can retrieve the results of the trace from the INFORMATION_SCHEMA.OPTIMIZER_TRACE table. Tracing a …
5.12.1 Viewing MySQL Trace Information
https://docs.oracle.com/cd/E17952_01/connector-net-en/connector-net-programming-tracing-mysql.html
Connecting to MySQL... mysql Information: 1 : 1: Connection Opened: connection string = 'server=localhost;User Id=root;database=world;port=3306 ;password=*****;logging=True' mysql Information: 3 : 1: Query Opened: SHOW VARIABLES mysql Information: 4 : 1: Resultset Opened: field(s) = 2, affected rows = -1, inserted id = -1 mysql Information: 5 : 1: Resultset Closed.
How can I view live MySQL queries? - Stack Overflow
https://stackoverflow.com/questions/568564/how-can-i-view-live-mysql-queries
The quickest way to see live MySQL/MariaDB queries is to use debugger. On Linux you can use strace, for example: sudo strace -e trace=read,write -s 2000 -fp $(pgrep -nf mysql) 2>&1 Since there are lot of escaped characters, you may format strace's output by piping (just add | between these two one-liners) above into the following command:
SQL Trace - SQL Server | Microsoft Docs
https://docs.microsoft.com/en-us/sql/relational-databases/sql-trace/sql-trace
MySQL Training from Oracle University
https://www.mysql.com/training/
Training from Oracle University on MySQL can help you with the following: Develop and manage your MySQL applications more efficiently. Keep your mission-critical applications and essential services up and running 24x7. Reduce your database Total Cost of Ownership (TCO) on Microsoft Windows by up to 90%. Get quick access to information that you ...
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