我想使用SQL语句重命名现有表:我已经试过了:mysql_query("RENAME'$renameFolder'TO'$newName'");mysql_query("ALTERTABLE'$renameFolder'RENAMETO'$newName'");mysql_query("RENAMETABLE'$renameFolder'TO'$newName'");使用3个语句中的任何一个，我总是收到相同的错误消息:"YouhaveanerrorinyourSQLsyntax;checkthemanualthatcorrespondstoyourMySQLserverversionf