mysql如果数据不存在,则插入新数据,否则更新_MySQL
Jun 01, 2016 pm 01:50 PM
bitsCN.com
//如果不存在,则插入新数据 $sql = "INSERT INTO {$ecs->table(‘cat_lang’)} (cat_id,lang_id,cat_name,keywords,cat_desc) VALUES({$cat_id},{$k},’{$val['cat_name']}’,'{$val['keywords']}’,'{$val['cat_desc']}’) ON DUPLICATE KEY UPDATE cat_name=’{$val['cat_name']}’,cat_desc=’{$val['cat_desc']}’,keywords=’{$val['cat_desc']}’";这里要注意的是:必须表主键唯一 。这里,这里我采用的是 分类id和语言id双主键机制。

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