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JPA - Returning an auto generated id after persist()
...EclipseLink) and Spring. Say I have a simple entity with an auto-generated ID:
7 Answers
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Entity Framework Migrations renaming tables and columns
...rything, including the foreign keys with the new column name.
public override void Up()
{
RenameTable("ReportSections", "ReportPages");
RenameTable("ReportSectionGroups", "ReportSections");
RenameColumn("ReportPages", "Group_Id", "Section_Id");
}
public override void Down()
{
Renam...
Multiple Updates in MySQL
...SERT ... ON DUPLICATE KEY UPDATE.
Using your example:
INSERT INTO table (id,Col1,Col2) VALUES (1,1,1),(2,2,3),(3,9,3),(4,10,12)
ON DUPLICATE KEY UPDATE Col1=VALUES(Col1),Col2=VALUES(Col2);
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What is a method that can be used to increment letters?
...ted 2019/05/09)
Since this answer has received so much visibility I've decided to expand it a bit beyond the scope of the original question to potentially help people who are stumbling on this from Google.
I find that what I often want is something that will generate sequential, unique strings in ...
Using “label for” on radio buttons
...lmost got it. It should be this:
<input type="radio" name="group1" id="r1" value="1" />
<label for="r1"> button one</label>
The value in for should be the id of the element you are labeling.
sh...
What's the difference between identifying and non-identifying relationships?
...
An identifying relationship is when the existence of a row in a child table depends on a row in a parent table. This may be confusing because it's common practice these days to create a pseudokey for a child table, but not make...
SQL UPDATE SET one column to be equal to a value in a related table referenced by a different column
...
update q
set q.QuestionID = a.QuestionID
from QuestionTrackings q
inner join QuestionAnswers a
on q.AnswerID = a.AnswerID
where q.QuestionID is null -- and other conditions you might want
I recommend to check what the result set to update is befo...
warning RC2182: duplicate dialog control ID 1002 - C/C++ - 清泛网 - 专注C/C++及内核技术
warning RC2182: duplicate dialog control ID 1002原因：报错行的控件ID值（这里是1002），与其他的控件ID值一样，发生冲突了。解决：resource.h中将值一样的控件ID改为不同的值。原因：报错行的控件ID值（这里是1002），与其他的控件ID值一...
ble 蓝牙透传代码怎么写？ - 创客硬件开发 - 清泛IT社区，为创新赋能！
...用我们这个模块这个地址可以吗？
上图中是控制服务id：SERVICEF000_UUUID = UUID.fromString("0000f000-0000-1000-8000-00805f9b34fb");以及2个控制端口的特征id。
可以做到透传，不过要换透传 id，这个 id 是 io 控制口
晚一些我给你一...
C# Entity-Framework: How can I combine a .Find and .Include on a Model Object?
... .Include(i => i.Brand)
.FistOrDefault(x => x.ItemId == id);
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