Mysql advanced cursor, mysql cursor

Source: Internet
Author: User

Mysql advanced cursor, mysql cursor

What is a cursor? The select statement may obtain n statements at a time, so the cursor can obtain a record in the select statement at a time. Move down every time one is obtained! Complicated logic can be implemented!





There is another problem above. We will have another record. How can we fix it?

The reason is continue, rather than exit;


Can't I use continue? Yes. Didn't I find that there was a small logical problem above? Solve this problem: adjust the order


It can be seen that there are multiple n methods. Isn't that a syntax problem!

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