摘要:
使用mysql在执行一条插入语句时 报错:Expression #1 of ORDER BY clause is not in GROUP BY clause and contains nonaggregated column 'information_schema.PROFILING.SEQ' w 阅读全文
摘要:
mysql创建数据库的语法格式: 最简单的建库语句为: 一般会加上if not exists来判断该库不存在时才添加: 有时需要指定字符集和校对规则: 阅读全文