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mysql常见报错之SELECT list is not in GROUP BY clause
概述记一次最近碰到的一个mysql报错,还是比较少见的。1055 - Expression #1 of SELECT list is not in GROUP BY clause and contains nonaggregated column 'information_schema.STATIS...
02月01日[编码文章]浏览:8
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mysql 出现 SQL错误(1055)GROUP BY错误如何处理?
mysql 出现如下错误怎么办: /* SQL错误(1055):Expression #2 of SELECT list is not in GROUP BY clause and contains nonaggregated column '表名' which is not fun...
02月01日[编码文章]浏览:11
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SQL|where, group by, order by去重实例之如何正确使用group by
需求找出最近练习过的句子id,不能重复(练习保存在practice表中,句子保存在pth_sentences表中,一个pth_sentence纪录有多条practices纪录)。现在的情况是如果一个句子练习多次,会得到重复的pth_sentence_id,这样前端在列出来的时候呢,句子是重复的,我只...
02月01日[编码文章]浏览:31