大约有 40,000 项符合查询结果(耗时:0.0384秒) [XML]

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How to get equal width of input and select fields

On the form, I have one select and two input fields. These elements are vertically aligned. Unfortunately, I can't get equal width of these elements. ...
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How to drop column with constraint?

...ing of constraints script: DECLARE @sql NVARCHAR(MAX) WHILE 1=1 BEGIN SELECT TOP 1 @sql = N'alter table tbloffers drop constraint ['+dc.NAME+N']' from sys.default_constraints dc JOIN sys.columns c ON c.default_object_id = dc.object_id WHERE dc.parent_object_id = OBJ...
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SQL to determine minimum sequential days of access?

... The answer is obviously: SELECT DISTINCT UserId FROM UserHistory uh1 WHERE ( SELECT COUNT(*) FROM UserHistory uh2 WHERE uh2.CreationDate BETWEEN uh1.CreationDate AND DATEADD(d, @days, uh1.CreationDate) ) = @days O...
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Insert picture into Excel cell [closed]

...ell as soon it comes close to it. If you have multiple images, you can select and insert all the images at once (as shown in step 4). You can also resize images by selecting it and dragging the edges. In the case of logos or product images, you may want to keep the aspect ratio of the image int...
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Why do we always prefer using parameters in SQL statements?

I am very new to working with databases. Now I can write SELECT , UPDATE , DELETE , and INSERT commands. But I have seen many forums where we prefer to write: ...
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Sorting dropdown alphabetically in AngularJS

... Angular has an orderBy filter that can be used like this: <select ng-model="selected" ng-options="f.name for f in friends | orderBy:'name'"></select> See this fiddle for an example. It's worth noting that if track by is being used it needs to appear after the orderBy filt...
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SQL JOIN vs IN performance?

...king, IN and JOIN are different queries that can yield different results. SELECT a.* FROM a JOIN b ON a.col = b.col is not the same as SELECT a.* FROM a WHERE col IN ( SELECT col FROM b ) , unless b.col is unique. However, this is the syno...
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Remove all spaces from a string in SQL Server

... Simply replace it; SELECT REPLACE(fld_or_variable, ' ', '') Edit: Just to clarify; its a global replace, there is no need to trim() or worry about multiple spaces for either char or varchar: create table #t ( c char(8), v varchar(8))...
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Add disabled attribute to input element using Javascript

... Working code from my sources: HTML WORLD <select name="select_from" disabled>...</select> JS WORLD var from = jQuery('select[name=select_from]'); //add disabled from.attr('disabled', 'disabled'); //remove it from.removeAttr("disabled"); ...
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Extracting specific columns from a data frame

...r package, if your data.frame is called df1: library(dplyr) df1 %>% select(A, B, E) This can also be written without the %>% pipe as: select(df1, A, B, E) share | improve this answer ...