大约有 40,000 项符合查询结果(耗时:0.0452秒) [XML]

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Set selected index of an Android RadioGroup

...he answer below if you are, in fact, looking to set the radio button group by index, see the answer below. ((RadioButton)radioGroup.getChildAt(index)).setChecked(true); share | improve this answer...
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SQL select only rows with max value on a column [duplicate]

... At first glance... All you need is a GROUP BY clause with the MAX aggregate function: SELECT id, MAX(rev) FROM YourTable GROUP BY id It's never that simple, is it? I just noticed you need the content column as well. This is a very common question in SQL: find the...
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Rails find_or_create_by more than one attribute?

There is a handy dynamic attribute in active-record called find_or_create_by: 5 Answers ...
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How to delete from select in MySQL?

...posts WHERE id IN ( SELECT * FROM ( SELECT id FROM posts GROUP BY id HAVING ( COUNT(id) > 1 ) ) AS p ) Or use joins as suggested by Mchl. share | improve this answer | ...
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How to construct a REST API that takes an array of id's for the resources

...prefer id=id1,id2,id3 because it makes the URI shorter and easier to read (by a human, during a debugging operation for example). Individual parameters for each value would make the URI especially harder to follow if there are other parameters between ids: api.com/users?id=id1&id=id2&joined-...
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Remove duplicate rows in MySQL

...IKE your_table; INSERT your_table_deduped SELECT * FROM your_table GROUP BY index1_id, index2_id; RENAME TABLE your_table TO your_table_with_dupes; RENAME TABLE your_table_deduped TO your_table; #OPTIONAL ALTER TABLE `your_table` ADD UNIQUE `unique_index` (`index1_id`, `index2_id`); #...
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How to use GROUP BY to concatenate strings in SQL Server?

...1]','VARCHAR(MAX)') ,1,2,'') AS NameValues FROM #YourTable Results GROUP BY ID DROP TABLE #YourTable share | improve this answer | follow | ...
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Select SQL Server database size

...er_files WITH(NOWAIT) WHERE database_id = DB_ID() -- for current db GROUP BY database_id Output: -- my query name log_size_mb row_size_mb total_size_mb -------------- ------------ ------------- ------------- xxxxxxxxxxx 512.00 302.81 814.81 -- sp_spaceused database_...
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An App ID with Identifier '' is not available. Please enter a different string

... update As of Xcode 8, iOS Team Provision Profile Managed by Xcode are now updated by Xcode automatically and correctly. They are not even listed at the Developer Portal, but generated on-the-flight. However, the solution proposed below will still work. I've switched to using the ...
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Select last row in MySQL

...here MAX(id) is the right answer! Kind of: SELECT fields FROM table ORDER BY id DESC LIMIT 1; share | improve this answer | follow | ...