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SELECT * FROM `book_members` WHERE no =

Fatal error: Uncaught mysqli_sql_exception: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near '' at line 1 in /users/2018/i1858002/public_html/2022/WebDB/updateForm.php:21 Stack trace: #0 /users/2018/i1858002/public_html/2022/WebDB/updateForm.php(21): mysqli->query() #1 {main} thrown in /users/2018/i1858002/public_html/2022/WebDB/updateForm.php on line 21