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This article mainly introduces "what is the writing order and execution order of Mysql series SQL query statements". In daily operation, I believe that many people have doubts about the writing order and execution order of Mysql series SQL query statements. Xiaobian consulted all kinds of materials and sorted out simple and easy-to-use operation methods. I hope it will be helpful to answer the doubts about "what is the writing order and execution order of Mysql series SQL query statements". Next, please follow the editor to study!

1. The writing order of a complete SQL query statement-- "mysql statement writing order" 1 select distinct * 2 from table (or result set) 3 where … 4 group by... Having... 5 order by... 6 limit start,count-- Note: 1 and 2 belong to the most basic sentences and must contain. Note: 1 and 2 can be collocated with any of 3, 4, 5, 6, or with more than 3, 4, 5, 6 at the same time. 2. A complete execution order of SQL statements

The above figure is explained as follows:

3. Instructions on who comes before and who comes after in the execution order of select and having

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