本文介绍了如何使用子查询来定义 Mysql SELECT LIMIT 偏移量?的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
I have been trying to define "dynamically" the offset of a query.
But when executing this query I always end up with a You have an error in your SQL syntax;
When I do remplace the subquery by a number it does work fine. Is there something wrong in a query that has this shape?
SELECT LengthOfStay
FROM table1
LIMIT (SELECT CAST(COUNT(DISTINCT(LengthOfStay)) / 2 AS SIGNED) FROM table1 t1), 2;
Ps. I casted it so I can make sure it's an integer.
解决方案
You can not use a subquery as a LIMIT argument. Limit argument should be an INTEGER. Your subquery returns, well... basically, a table.
What are trying to achieve by this query anyway? This query does not make any sense to me...
这篇关于如何使用子查询来定义 Mysql SELECT LIMIT 偏移量?的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持编程学习网！
本站部分内容来源互联网,如果有图片或者内容侵犯您的权益请联系我们删除！