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What is the priority of sql statement execution order?

2025-01-16 Update From: SLTechnology News&Howtos shulou NAV: SLTechnology News&Howtos > Database >

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Editor to share with you what the priority of the execution order of sql statements is, I believe most people do not know much about it, so share this article for your reference, I hope you will learn a lot after reading this article, let's learn about it!

The priority of sql execution order from high to low is: the statement after the from keyword, the statement after the where keyword, the statement after "group by", the statement after select, and the statement after "order by".

This statement contains some keywords we often use, select,from,where,group by,order by, which is executed in the following order:

First execute the statement after the from keyword to identify the source of the data and which table it came from.

Then execute the statement after the where keyword to filter the data.

Then execute the statements that follow group by to group and classify the data.

Then execute the statement after select, that is, which part of the processed data should be taken.

Finally, the statement after order by is executed to sort the final result.

These are all the contents of the article "what is the priority of the execution order of sql statements?" Thank you for reading! I believe we all have a certain understanding, hope to share the content to help you, if you want to learn more knowledge, welcome to follow the industry information channel!

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