大约有 18,335 项符合查询结果(耗时:0.0323秒) [XML]

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How to pull a random record using Django's ORM?

...anager): def random(self): count = self.aggregate(count=Count('id'))['count'] random_index = randint(0, count - 1) return self.all()[random_index] share | improve this a...
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Update multiple rows in same query using PostgreSQL

... as c(column_b, column_a, column_c) where c.column_b = t.column_b; sql fiddle demo share | improve this answer | follow | ...
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android get all contacts

How can I get all the names of the contacts in my Android and put them into array of strings? 8 Answers ...
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Get attribute name value of

... Give your input an ID and use the attr method: var name = $("#id").attr("name"); share | improve this answer | follo...
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Gridview with two columns and auto resized images

I'm trying to make a gridview with two columns. I mean two photos per row side by side just like this image. 2 Answers ...
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How to use z-index in svg elements?

...="100" cy="105" r="20"/> </svg> Here the fork of your jsFiddle. Solution (alternative) The tag use with the attribute xlink:href and as value the id of the element. Keep in mind that might not be the best solution even if the result seems fine. Having a bit of time, here the link...
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Ways to save Backbone.js model data?

...erb you use. For example: // The URI pattern http://localhost:8888/donut/:id // My URI call http://localhost:8888/donut/17 If I make a GET to that URI, it would get donut model with an ID of 17. The :id depends on how you are saving it server side. This could just be the ID of your donut resourc...
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SQL WHERE.. IN clause multiple columns

...o this derived table: select * from table1 LEFT JOIN ( Select CM_PLAN_ID, Individual_ID From CRM_VCM_CURRENT_LEAD_STATUS Where Lead_Key = :_Lead_Key ) table2 ON table1.CM_PLAN_ID=table2.CM_PLAN_ID AND table1.Individual=table2.Individual WHERE table2.CM_PLAN_ID IS NOT NULL ...
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Select distinct using linq [duplicate]

... myList.GroupBy(test => test.id) .Select(grp => grp.First()); Edit: as getting this IEnumerable<> into a List<> seems to be a mystery to many people, you can simply write: var result = myList.GroupBy(test => test.id) ...
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Can I concatenate multiple MySQL rows into one field?

... You can use GROUP_CONCAT: SELECT person_id, GROUP_CONCAT(hobbies SEPARATOR ', ') FROM peoples_hobbies GROUP BY person_id; As Ludwig stated in his comment, you can add the DISTINCT operator to avoid duplicates: SELECT person_id, GROUP_CONCAT(DISTINCT hobbies SEPARA...