大约有 40,000 项符合查询结果(耗时:0.0603秒) [XML]

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Get records with max value for each group of grouped SQL results

..., age desc, Person) x group by `Group` This works because in mysql you're allowed to not aggregate non-group-by columns, in which case mysql just returns the first row. The solution is to first order the data such that for each group the row you want is first, then group by the columns you want the...
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REST Complex/Composite/Nested Resources [closed]

...our specific case of the covers is slightly more complex in that a cover really does require a comic book, and visa versa. However, if you consider an email message as a resource, and the from address as a child resource, you can obviously still reference the from address separately. For example, g...
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Is there a CSS selector for the first direct child only?

... What you posted literally means "Find any divs that are inside of section divs and are the first child of their parent." The sub contains one tag that matches that description. It is unclear to me whether you want both children of the main div o...
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equals vs Arrays.equals in Java

... it, ever. That said, it's not "broken" as in "someone has done it in a really wrong way" — it's just doing what's defined and not what's usually expected. So for purists: it's perfectly fine, and that also means, don't use it, ever. Now the expected behaviour for equals is to compare data. The ...
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Saving grid.arrange() plot to file

... ggsave is not working with (some or all) grobs anymore. – vak Oct 29 '15 at 14:50 add a comment  |  ...
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What Java ORM do you prefer, and why? [closed]

... Hey, is this all true for big real life projects? – santiagobasulto Oct 5 '10 at 2:13 30 ...
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Fit cell width to content

Given the following markup, how could I use CSS to force one cell (all cells in column) to fit to the width of the content within it rather than stretch (which is the default behaviour)? ...
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Why is the Windows cmd.exe limited to 80 characters wide?

...(even in the days of 128mb machines and the one time you need it, you'll REALLY be glad you set it before hand. The width is a personal preference, I don't like seeing line wraps from my compiler except under extreme conditions, but others don't ever like to scroll. – Bill K ...
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Uncaught ReferenceError: jQuery is not defined [duplicate]

...this problem when the certificate for the site expires. Today I got it and all of my sites started failing on refresh because of it. On your console you'll only see: ReferenceError: jQuery is not defined The problem is you won't find the cause until you look at the URL and see this: code.jquer...
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Ignore modified (but not committed) files in git?

... Can you list all your ignored files somehow ? – Zitrax Apr 7 '10 at 10:10 21 ...