MySQL CONCAT()拼接出现NULL
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MySQL中CONCAT()函数拼接出现NULL的问题解决
项目中查询用到了concat()拼接函数,在此查询中出现了拼接的字段为null的情况,拼接结果YRobpiBp为nwww.devze.comull在应用层报了空指针异常。[详细]
2023-03-31 08:59 分类:数据库 SimpleXMLElement to PHP Array [duplicate]
This question already has answers here: Recursive cast from SimpleXMLObject to Array (7 answers) 开发者_如何学运维Closed 7 years ago.[详细]
2022-12-28 15:40 分类:问答