SQL execution order priority 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" statement.
This statement contains some keywords we often use, select, from, where, group by, order by, its execution sequence is as follows:
First execute the statement after thefrom keywordto clarify the source of the data and which table it is taken from.
Then execute the statement following thewhere keywordto filter the data.
Then execute the statements followinggroup byto group and classify the data.
Then execute the statement followingselect, that is, which part of the processed data should be taken.
Finally execute the statement followingorder byto sort the final results.
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