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mysql group_concat数据过长截断 | ProgramNotes #75

Open yiGmMk opened 2 years ago

yiGmMk commented 2 years ago

https://programnotes.cn/mysql-group_concat-truncated/index.html

This function returns a string result with the concatenated non-NULL values from a group. It returns NULL if there are no non-NULL values group_concat将非NULL的值拼接返回字符串,当没有非NULL的值时返回NULL.有长度限制,遇到过一个由于长