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How to select the first element with a specific attribute using XPath

The XPath bookstore/book[1] selects the first book node under bookstore . 9 Answers ...
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SQL SERVER: Get total days between two dates

...:09.3312722'; DECLARE @enddate datetime2 = '2009-05-04 12:10:09.3312722'; SELECT DATEDIFF(day, @startdate, @enddate); share | improve this answer | follow | ...
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MySQL Select minimum/maximum among two (or more) given values

Is it possible to SELECT the minimum or maximum among two or more values. I'd need something like this: 4 Answers ...
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Do htmlspecialchars and mysql_real_escape_string keep my PHP code safe from injection?

...nerable to certain attack vectors. Imagine the following SQL: $result = "SELECT fields FROM table WHERE id = ".mysql_real_escape_string($_POST['id']); You should be able to see that this is vulnerable to exploit. Imagine the id parameter contained the common attack vector: 1 OR 1=1 There's no...
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How to tell Xcode where my info.plist and .pch files are

...g to add my discoveries here as it is slightly different for Xcode 4.2: Select your project In the left side of the middle pane, select your app under "Targets" Select the tab "Build Settings" Search the following keywords: "info.plist" and "pch" At this point it should be pretty clear which are ...
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Get table column names in MySQL?

...DESCRIBE my_table; Or in newer versions you can use INFORMATION_SCHEMA: SELECT COLUMN_NAME FROM INFORMATION_SCHEMA.COLUMNS WHERE TABLE_SCHEMA = 'my_database' AND TABLE_NAME = 'my_table'; Or you can use SHOW COLUMNS: SHOW COLUMNS FROM my_table; ...
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How to concatenate strings of a string field in a PostgreSQL 'group by' query?

...at the question asked for, even letting you specify the delimiter string: SELECT company_id, string_agg(employee, ', ') FROM mytable GROUP BY company_id; Postgres 9.0 also added the ability to specify an ORDER BY clause in any aggregate expression; otherwise, the order is undefined. So you can no...
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How to change max_allowed_packet size

...ices.msc, Enter You could find an entry like 'MySQL56', right click on it, select properties You could see sth like "D:/Program Files/MySQL/MySQL Server 5.6/bin\mysqld" --defaults-file="D:\ProgramData\MySQL\MySQL Server 5.6\my.ini" MySQL56 I got this answer from http://bugs.mysql.com/bug.php?id=68...
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LINQ - Full Outer Join

...rst.ID equals last.ID into temp from last in temp.DefaultIfEmpty() select new { first.ID, FirstName = first.Name, LastName = last?.Name, }; var rightOuterJoin = from last in lastNames join first in firstNames on last.ID equals first.ID into temp fr...
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jQuery UI DatePicker to show month year only

...Text, inst) { $(this).datepicker('setDate', new Date(inst.selectedYear, inst.selectedMonth, 1)); } }); }); </script> <style> .ui-datepicker-calendar { display: none; } </style> </head> <body> ...