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How do I get ActiveRecord to show the next id (last + 1) in Ruby on Rails?

Is there a compact way with ActiveRecord to query for what id it\'s going to use next if an object was going to be p开发者_如何学Pythonersisted to the database? In SQL, a query like this would look so[详细]

2022-12-28 17:41 分类：问答
Why does GetSqlDecimal throw when GetDecimal doesn't?

I have a database table that has a column of 开发者_运维技巧type money, allowing nulls. Using a SqlDataReader named reader, I can do[详细]

2022-12-25 18:04 分类：问答
Automatic e-mail processing

I\'d like to write a .NET application in F# to automate some of the processing of my e-mails. For example, when an order comes in my program might compute a new htpasswd from the e-mail\'s contents, u[详细]

2022-12-25 00:42 分类：问答
Tomcat 6 thread safe email queue (javax.mail.*)

Hi I have design/architecture question.I would like to send emails from one of my jsp pages.I have one particular issue that has been a little bit of a problem.there is an instance where one of the pa[详细]

2022-12-25 00:37 分类：问答
林麝多少钱一只啊？林麝多少钱一只？

liujun8878 2022-04-19 12:09 自然分布于广西金钟山自然保护区（主要见于坡西、弄八、西舍等片区）。种麝在1~3W一头，投资成本大！目前，国际市场的麝香价格一克卖价在500元左右，胜过黄金的价格。林麝不好养（[详细]

2022-12-24 23:41 分类：问答
掌中之物讲的什么故事？

《掌中之物》讲述了傅氏傀儡傅慎行为了得到傅氏所有财产找到金融才女何妍，何妍为了保护家人无奈答应傅慎行，也在暗中收集他转移财产的证据，在这过程中何妍和傅慎行的得力助手小五里应外合，最终两人经历困难险[详细]

2022-12-24 20:49 分类：问答
一不展丁香结下一句是什么呢？？

谁会陪我一齐变老开发者_运维百科 2022-04-19 23:45 芭蕉不展丁香结，同向春风各自愁的意思:芭蕉的蕉心尚未展开，丁香的花蕾丛生如结；而二人异地同心，都在为不得与对方相会而愁苦。丶异梦[详细]

2022-12-24 20:47 分类：问答
Having a problem inserting a foreign key data into a table using a PHP form

I am newbee with PHP and MySQL and need help... I have two tables (Staff and Position) in the database. The Staff table (StaffId, Name, PositionID (fk)). The Position table is populated with differen[详细]

2022-12-24 17:41 分类：问答
为什么65岁以上不建议接种科兴新冠疫苗？？

peaceful 2022-04-21 17:02 65岁以上的老人也可以接种新冠疫苗，我国2021年3月29日发布的第一版新冠疫苗接种指南中明确规定，18岁以上身体健康的成年人都可以接种，没有年龄上限，即使年纪80周岁以上，只要身体[详细]

2022-12-24 14:18 分类：问答
How can I match everything in a string until the second occurrence of a delimiter with a regular expression?

I am trying to refine a preg_match_all by finding the second occurrence of a period then a space: <?php[详细]

2022-12-24 10:17 分类：问答