大约有 43,000 项符合查询结果(耗时:0.0347秒) [XML]

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What GRANT USAGE ON SCHEMA exactly do?

...a schema doesn't grant rights on the tables within. If you have rights to SELECT from a table, but not the right to see it in the schema that contains it then you can't access the table. The rights tests are done in order: Do you have `USAGE` on the schema? No: Reject access. Yes: Do...
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How does virtual inheritance solve the “diamond” (multiple inheritance) ambiguity?

...virtual void eat(){ std::cout<<"EAT=>D";} }; int main(int argc, char ** argv){ A *a = new D(); a->eat(); delete a; } ... that way the output is gonna be the correct one: "EAT=>D" Virtual inheritance only solves the duplication of the grandfather! BUT you still need ...
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Maven2: Best practice for Enterprise Project (EAR file)

... What helped me a lot was to run the Maven archetype:generate goal and select from one of the archetypes, some of which seem to be updated regularly (in particular JBoss seems to be well maintained). mvn archetype:generate Hundreds of archetypes appeared in a numbered list from which to selec...
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What is the use of GO in SQL Server Management Studio & Transact SQL?

... gbn make it SELECT and look at what happens :-) – SQLMenace Feb 19 '10 at 21:09 14 ...
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How do I select a random value from an enumeration?

Given an arbitrary enumeration in C#, how do I select a random value? 9 Answers 9 ...
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iTerm2: How to expand split pane temporarily?

... @Alper Go to Preferences > Keys > Action > Select Menu Item > View > Maximize Active Pane and enter a custom shortcut. – Qaz Dec 14 '17 at 0:13 ...
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Directive isolate scope with ng-repeat scope in AngularJS

...moved: <li ng-repeat="name in names" ng-class="{ active: $index == selected }" ng-click="selected = $index"> {{$index}}: {{name.first}} {{name.last}} </li> Here is a JSFiddle demonstrating that it won't work. You get the exact same results as in your directive. Why doesn'...
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How to select an element inside “this” in jQuery?

I know can I select an element this way: 2 Answers 2 ...
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Unicode, UTF, ASCII, ANSI format differences

...ny other places, it means UTF-8. Properly, Unicode refers to the abstract character set itself, not to any particular encoding. UTF-16: 2 bytes per "code unit". This is the native format of strings in .NET, and generally in Windows and Java. Values outside the Basic Multilingual Plane (BMP) are enc...
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Computed / calculated / virtual / derived columns in PostgreSQL

...y as column? The expression (looking like a column) is not included in a SELECT * FROM tbl, though. You always have to list it explicitly. Can also be supported with a matching expression index - provided the function is IMMUTABLE. Like: CREATE FUNCTION col(tbl) ... AS ... -- your computed expr...