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COUNT(*) vs. COUNT(1) vs. COUNT(pk): which is better? [duplicate]

...T(field) or COUNT(*), and stick with it consistently, and if your database allows COUNT(tableHere) or COUNT(tableHere.*), use that. In short, don't use COUNT(1) for anything. It's a one-trick pony, which rarely does what you want, and in those rare cases is equivalent to count(*) Use count(*) fo...
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The Role Manager feature has not been enabled

...tried putting it in Application_Start and it says This method can only be called during the application's pre-start initialization phase. – Maslow May 8 '13 at 15:17 1 ...
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Serialize an object to string

...(T) in XmlSerializer constructor: if you use the first one the code covers all possible subclasses of T (which are valid for the method), while using the latter one will fail when passing a type derived from T.    Here is a link with some example code that motivate this statement, with XmlSerializ...
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Fixed Table Cell Width

... You could try using the <col> tag manage table styling for all rows but you will need to set the table-layout:fixed style on the <table> or the tables css class and set the overflow style for the cells https://developer.mozilla.org/en-US/docs/Web/HTML/Element/col <table cl...
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GoTo Next Iteration in For Loop in java

...ion in nested loops use continue someLabel;, but you can also combine them all. outerLoop: for(int j = 0; j < 10; j++){ innerLoop: for(int i = 0; i < 10; i++){ if (i + j == 2){ continue innerLoop; } if (i + j == 4){ continue outerLoop; ...
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Can I apply a CSS style to an element name?

...ute selectors: http://www.css3.info/preview/attribute-selectors/ /* turns all input fields that have a name that starts with "go" red */ input[name^="go"] { color: red } share | improve this answe...
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Spring 3.0 - Unable to locate Spring NamespaceHandler for XML schema namespace [http://www.springfra

...y configuration xml can be a different one from applicationContext.xml, usually applicationContext-security.xml inside WEB-INF folder. The changes to be applied are for web.xml <context-param> <param-name>contextConfigLocation</param-name> <param-value> /WEB-...
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How to count string occurrence in string?

...rn and elegant, but Vitimtk's solution is much more efficient. what do you all think of his code? – TruMan1 Nov 4 '11 at 2:15 ...
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How to convert a boolean array to an int array

...veryone for you help!....although the answer was right in my question, i really liked getting the variety of answers and seeing all the different ways to do it. Really opened my mind regarding python. – Kwolf Jul 6 '13 at 20:49 ...
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How to find available versions for a bower dependency

... command to get detailed info specific to a package. bower search prints all packages that has the query string as a substring. – Yiling Aug 29 '15 at 16:15 ...