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Inner join vs Where
...he same execution plan, look at these two tables:
CREATE TABLE table1 (
id INT,
name VARCHAR(20)
);
CREATE TABLE table2 (
id INT,
name VARCHAR(20)
);
The execution plan for the query using the inner join:
-- with inner join
EXPLAIN PLAN FOR
SELECT * FROM table1 t1
INNER JOIN table2 t2 ...
Prevent ViewPager from destroying off-screen views
...t one is not destroyed, and vice-versa.
mViewPager = (ViewPager)findViewById(R.id.pager);
mViewPager.setOffscreenPageLimit(2);
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git working on two branches simultaneously
...
I know this is old, but could you provide some explanation please.
– dav_i
Jan 15 '13 at 10:23
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常用Git命令汇总 - 开源 & Github - 清泛网 - 专注C/C++及内核技术
...变）
git reset <file> #从暂存区恢复到工作区（不指定版本id，则默认为最后一次提交的版本id）
git reset . #从暂存区恢复到工作区
git reset $id # 恢复到指定的提交版本，该$id之后的版本提交都恢复到工作区
git reset --hard $id #恢复...
How to print pandas DataFrame without index
...ipboard() and then paste into Excel. Useful for dealing with Windows's stupid "you can't edit an open document" BS.
– BallpointBen
Jan 18 '19 at 23:42
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Facebook share link without JavaScript
...parameter. You can use an indirect way to achieve this.
Create a server side page for example: "/sharer.aspx"
Link this page whenever you want the share functionality.
In the "sharer.aspx" get the refering url, and redirect user to "https://www.facebook.com/sharer/sharer.php?u={referer}"
Example...
SQL left join vs multiple tables on FROM line?
...ELECT * -- for simplicity
FROM Company, Department, Employee
WHERE Company.ID *= Department.CompanyID
AND Department.ID = Employee.DepartmentID
Note that the last one there is an inner join, in order to fulfill the criteria that you only want departments with people.
Ok, so what happens now. We...
How can I convert NSDictionary to NSData and vice versa?
I am sending NSString and UIImage using bluetooth. I decided to store both in a NSDictionary and then convert the dictionary to NSData .
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How to force a view refresh without having it trigger automatically from an observable?
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You can't call something on the entire viewModel, but on an individual observable you can call myObservable.valueHasMutated() to notify subscribers that they should re-evaluate. This is generally not necessary in KO, as you mentioned.
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Infinite Recursion with Jackson JSON and Hibernate JPA issue
...s for perfect answer. Btw, I came with another solution: you can simply avoid creating getter for this value, so Spring won't be able to access it while creating JSON (but I don't think that it suits every case, so your answer is better)
– Semyon Danilov
Feb 28...