查了幾個可能的原因，結尾沒有語法錯誤；換一個簡單的存儲過程解釋器也能通過；最后查到是很多elseif中間有一個if（少了else），改了之后就好了。
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SQL Error: 1064, SQLState: 42000 You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version
解決:[Err] 1064 - You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near
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php MySQL 8.0：check the manual that corresponds to your MySQL server version for the right syntax to use near 'identified by 'password'' at line 1 [Err] 1064 - You have an error in your SQL syntax; check the manual that corresponds to your MySQL s mysq添加外鍵報錯：check the manual that corresponds to your MySQL server version for the right syntax to use near 'TYPE=InnoDB' at line 1 【mybatis】mybatis進行批量更新，報錯：com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right MariaDB/MySQL存儲過程和函數 mysql創建存儲過程 ERROR 1064 (42000): You have an error in your SQL syntax; check the manual...