Today, I will share with you all the 18 boutique MySQL interview questions that will appear in mainstream enterprise interviews. After understanding, it is no problem to hang the interviewer. Not much to say, direct dry goods!
1. What are the three paradigms of the database?
2. What experience in database optimization do you have?
3. Please briefly describe the types of commonly used indexes?
4. And what is the working mechanism of index in mysql database?
5. MySQL basic operation commands:
6. The principle and process of mysql replication.
7. What type of replication does mysql support?
8. What is the difference between myisam and innodb in mysql?
9. What is the difference between varchar and char in mysql and the meaning of 50 in varchar(50)?
10. The names of the four transaction isolation levels supported by InnoDB in MySQL, and the difference between each level?
11. There is a large field X in the table (for example: text type), and the field X will not be updated frequently. It is mainly read. What is the advantage of breaking the field into sub-tables?
12. What does the row lock of the InnoDB engine in MySQL complete (or realize) by adding it?
13. What are the global parameters that control memory allocation in MySQL?
14. If there is only one field of VARCHAR(N) type in a table, utf8 encoding, what is the maximum value of N (accurate to the order of magnitude)?
15. What are the advantages and disadvantages of the two ways of writing [SELECT *] and [SELECT all fields]?
16. What are the similarities and differences between HAVNG clause and WHERE?
17. MySQL insert when the record does not exist, update when the record exists, how to write the statement?
18. MySQL select statement syntax for insert and update
So far, I have compiled 18 excellent MYSQL interview questions, I hope it will be useful to you. If you want the answer to the information, you can get it for free by "Add me VX Assistant". Riding the wind and waves, the future can be expected. I wish everyone a satisfactory offer.
