大约有 41,000 项符合查询结果(耗时:0.0521秒) [XML]

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SQLite - UPSERT *not* INSERT or REPLACE

... (id, role, name) VALUES ( 1, 'code monkey', (SELECT name FROM Employee WHERE id = 1) ); This will update 2 of the columns. When ID=1 exists, the ROLE will be unaffected. When ID=1 does not exist, the role will be set to 'Benchwarmer' instead of the default v...
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What is the best way to conditionally apply a class?

...ul with an li for each element and a property on the controller called selectedIndex . What would be the best way to add a class to the li with the index selectedIndex in AngularJS? ...
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How can I select the first day of a month in SQL?

I just need to select the first day of the month of a given datetime variable. 30 Answers ...
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What is this operator in MySQL?

...d <> both give UNKNOWN with NULL on either side of the expression.) SELECT * FROM table WHERE YourColumn IS NOT NULL; can also negate the null safe equality operator but this is not standard SQL. SELECT * FROM table WHERE NOT (YourColumn <=> NULL); ...
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Android ViewPager with bottom dots

...droid:layout_height="wrap_content" app:tabBackground="@drawable/tab_selector" app:tabGravity="center" app:tabIndicatorHeight="0dp"/> </RelativeLayout> Hook up your UI elements inactivity or fragment as follows: Java Code: mImageViewPager = (ViewPager) findViewById(R.id...
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How to get value of selected radio button?

I want to get the selected value from a group of radio buttons. 28 Answers 28 ...
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Select values from XML field in SQL Server 2008

... Given that the XML field is named 'xmlField'... SELECT [xmlField].value('(/person//firstName/node())[1]', 'nvarchar(max)') as FirstName, [xmlField].value('(/person//lastName/node())[1]', 'nvarchar(max)') as LastName FROM [myTable] ...
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Select where count of one field is greater than one

...clause, for aggregate result comparison. Taking the query at face value: SELECT * FROM db.table HAVING COUNT(someField) > 1 Ideally, there should be a GROUP BY defined for proper valuation in the HAVING clause, but MySQL does allow hidden columns from the GROUP BY... Is this in preparati...
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Are PDO prepared statements sufficient to prevent SQL injection?

.... $pdo->query('SET NAMES gbk'); $var = "\xbf\x27 OR 1=1 /*"; $query = 'SELECT * FROM test WHERE name = ? LIMIT 1'; $stmt = $pdo->prepare($query); $stmt->execute(array($var)); In certain circumstances, that will return more than 1 row. Let's dissect what's going on here: Selecting a Cha...
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What is the correct file extension for GLSL shaders? [closed]

...haders. You can store the vertex shader and fragment shader content in a char * variable and compile, link and attach the shader to a program. Another way is to write the seperate vertex and fragment shader file with whatever extension you like and read it to compile, link and attach the shader t...