10 course recommendations on statement performance
MYSQL batch insert database statement performance analysis Assume that our table structure is as follows and the code is as follows CREATE TABLE example ( example_id INT NOT NULL, name VARCHAR( 50 ) NOT NULL, value VARCHAR( 50 ) NOT NULL, other_value VARCHAR( 50 ) NOT NULL ) Normally we would write a single inserted SQL statement like this: The code is as follows INSERT INTO example (example_id, name, value,
1. Share tips for optimizing insert into statements
Introduction: MYSQL batch insert database statement performance analysis, assuming our table structure is as follows
##2. Optimizing SQL SELECT statement performance. 6 Simple Tips
Introduction: Performance tuning of SELECT statements is sometimes a very time-consuming task , in my opinion it follows the Pareto principle. 20% of the effort will probably bring you 80% of the performance improvement, and to get the other 20% of the performance improvement you may need to spend 80% of the effort...
3. Sharing of 3 methods to analyze SQL statement performance
Introduction: Sharing of 3 methods to analyze SQL statement performance, required Friends can refer to
4. Optimize the use of temporary tables, improve SQL statement performance by 100 times
Introduction: [Problem phenomenon] A slow query occurred in the online mysql database. The DBA observed that the server IO surged during the query, the IO usage reached 100%, and the execution time of the SQL statement was as follows: SELECT DISTINCT g.*, cp. name AS cp_name, c.name AS category_name, t.name AS type_name FROM gm_game g LEFT
5. MYSQL batch insert database to achieve statement performance analysis
Introduction: Assume that our table structure is as follows and the code is as follows CREATE TABLE example ( example_id INT NOT NULL, name VARCHAR( 50 ) NOT NULL, value VARCHAR( 50 ) NOT NULL, other_value VARCHAR( 50 ) NOT NULL ) Normally we would write a single inserted SQL statement like this: The code is as follows INSERT INTO ex
##6.SQL statement performance adjustment principles in Oracle
Introduction: Welcome to the Oracle Community Forum, interact with 2 million technical staff> Enter 1. Problem raised In the early stages of application system development, due to the relatively small amount of data in the development database, it is difficult to query When writing SQL statements and complex views, one cannot understand the performance advantages and disadvantages of various writing methods of SQL statements. However, if the application system is submitted for actual application, as the data in the database7.
Performance analysis of slow update statement
##Introduction: When dealing with a problem recently, First, I received an alarm that the DB time increased. Then I checked the DB time and found that the load was nearly 1000%.
8.
MySQL paging performance problem, Limit performance problem needs to be solved!Introduction: As we all know, Mysql paging requires Limit for paging. When the amount of data/number of pages is small, Limit performance is conceivable. For example: {code...} There is no problem with the performance of the above SQL statement. However, if the offset is too large, a performance bottleneck will occur. For example: {Code....
9.
[PHP] How to fill in a large amount of random data into MYSQL to test statement performance? Introduction: I have an empty MYSQL database. How do I fill in a large amount of random data into MYSQL to test the statement performance? Let's brainstorm and find out if it is better to skip PHP and use SQL directly. The goal is 500,000-- The level is about 1 million. Introduction: {code...} [Related Q&A recommendations]: mysql query statement performance analysis php - MySQL paging performance problem, Limit performance problem needs to be solved! [PHP] How to fill in a large amount of random data into MYSQL to test statement performance?
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