两个例子提醒我们如果我们要使用锁存器则不需要任何操作，如果我们想避免锁存器的话，我们要让这个元器件的每一个可能条件赋予一个值-signal or variable "" may not be assigned a new value in every possible path through the Process Statement
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001346s ]
SELECT `a`.`aid`,`a`.`title`,`a`.`create_time`,`m`.`username` FROM `jrk_downrecords` `a` INNER JOIN `jrk_member` `m` ON `a`.`uid`=`m`.`id` WHERE `a`.`status` = 1 GROUP BY `a`.`aid` ORDER BY `a`.`create_time` DESC LIMIT 10 [ RunTime:0.093531s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001266s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001886s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001237s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003624s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.001062s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003190s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.014560s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001414s ]
UPDATE `jrk_articles` SET `hits` = 1 WHERE `id` = 280534 [ RunTime:0.001242s ]
