大约有 40,000 项符合查询结果(耗时:0.0343秒) [XML]

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How to write a foreach in SQL Server?

... the lines of a for-each, where I would like to take the Ids of a returned select statement and use each of them. 10 Answer...
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Find closing HTML tag in Sublime Text

...trl+Shift+A for Windows and Linux users, Command+Shift+A for Mac users) to select the whole block within the currently selected tag. For example, if you pressed this while your text cursor was within the outer div tag in the code below, all the divs with class selected would be selected. <div c...
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What is the simplest SQL Query to find the second largest value?

... SELECT MAX( col ) FROM table WHERE col < ( SELECT MAX( col ) FROM table ) share | improve this answ...
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How to remove all namespaces from XML with C#?

... return new XElement(xmlDocument.Name.LocalName, xmlDocument.Elements().Select(el => RemoveAllNamespaces(el))); } It's working 100%, but I have not tested it much so it may not cover some special cases... But it is good base to start. ...
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How to detect when cancel is clicked on file input?

...s not exposed to the browser." This is not true if the dialog is closed by selecting a file. – Trevor Dec 1 '16 at 22:24 ...
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Get size of all tables in database

... SELECT t.NAME AS TableName, s.Name AS SchemaName, p.rows, SUM(a.total_pages) * 8 AS TotalSpaceKB, CAST(ROUND(((SUM(a.total_pages) * 8) / 1024.00), 2) AS NUMERIC(36, 2)) AS TotalSpaceMB, SUM(a.used_pa...
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How do I cast a string to integer and have 0 in case of error in the cast with PostgreSQL?

...dn't want the overhead of a function. I came up with the following query: SELECT myfield::integer FROM mytable WHERE myfield ~ E'^\\d+$'; Postgres shortcuts its conditionals, so you shouldn't get any non-integers hitting your ::integer cast. It also handles NULL values (they won't match the regex...
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SQL SELECT speed int vs varchar

...k: A=261MB B=292MB C=322MB Non-indexed by id: select count(*), select by id: 450ms same on all tables Insert* one row per TX: B=9ms/record C=9ms/record Bulk insert* in single TX: B=140usec/record C=180usec/record Indexed by id, select by id: B=about 2...
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How to use OpenFileDialog to select a folder?

How to use OpenFileDialog to select folders? 8 Answers 8 ...
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using href links inside tag

... <select name="forma" onchange="location = this.value;"> <option value="Home.php">Home</option> <option value="Contact.php">Contact</option> <option value="Sitemap.php">Sitemap</option>...