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我的表中的所有船舶名称:查找与字母R开头
- 类(类,类型,国家,numGuns,缸径,排量)
- 船舶(姓名,班级,推出)
- 战役(名称,日期)
- 结果(船,战斗,结果)
我的查询:
select name from ships where name like 'r%' union all select ship from outcomes where ship like 'r%'
它产生正确的结果,但显示错误,如:
Wrong
Your query produced correct result set on main database, but it failed test on second, checking database
* Wrong number of records (more by 4)
请提供有关TUR DB结构的一些解释......什么[R乌尔表之间的外键,如果有任何?并与两个表格关联... – Zeina