在select select运算符中嵌入select

Question

我有一个ms-access数据库，我尝试在字段中连接一些值，如下所示：

SELECT ('29434-'&`book`.id&'-'&`book`.page&'-'&`book`.part&(select count(`title`.tit) from `title` where `title`.id = `book`.id) AS ID,
`book`.nass AS content, `book`.part, `book`.page FROM `book` ORDER BY `book`.id, `book`.page 

我收到有关缺少运算符的错误消息。 concat工作正常没有嵌入选择。我怎么能管理这个？

Answer 1

我想你忘了关闭第一个括号。我不太确定你必须关闭它，或者你可能会删除第一个

SELECT '29434-'&`book`.id&'-'&`book`.page&'-'&`book`.part&(select count(`title`.tit) from `title` where `title`.id = `book`.id) AS ID,
`book`.nass AS content, `book`.part, `book`.page FROM `book` ORDER BY `book`.id, `book`.page