The key is that the SQL statement in the prepared statement references the current position of the cursor, so you can execute it multiple times and update different rows.

关键是准备好的语句中的sql语句会引用游标的当前位置，所以您可以多次执行它，并更新不同的行。

youdao

The key is that the SQL statement in the prepared statement references the current position of the cursor, so you can execute it multiple times and update different rows.

关键是准备好的语句中的sql语句会引用游标的当前位置，所以您可以多次执行它，并更新不同的行。

youdao