大约有 46,000 项符合查询结果(耗时:0.0224秒) [XML]

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SQL “select where not in subquery” returns no results

...MySQL There are three ways to do such a query: LEFT JOIN / IS NULL: SELECT * FROM common LEFT JOIN table1 t1 ON t1.common_id = common.common_id WHERE t1.common_id IS NULL NOT EXISTS: SELECT * FROM common WHERE NOT EXISTS ( SELECT NULL FROM ...
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How do I select an entire row which has the largest ID in the table?

... You could use a subselect: SELECT row FROM table WHERE id=( SELECT max(id) FROM table ) Note that if the value of max(id) is not unique, multiple rows are returned. If you only want one such row, use @MichaelMior's answer, SELEC...
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Entity Framework select distinct name

... Using lambda expression.. var result = EFContext.TestAddresses.Select(m => m.Name).Distinct(); share | improve this answer | follow | ...
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DISTINCT for only one column

... If you are using SQL Server 2005 or above use this: SELECT * FROM ( SELECT ID, Email, ProductName, ProductModel, ROW_NUMBER() OVER(PARTITION BY Email ORDER BY ...
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SQL Server 2008: How to query all databases sizes?

... with fs as ( select database_id, type, size * 8.0 / 1024 size from sys.master_files ) select name, (select sum(size) from fs where type = 0 and fs.database_id = db.database_id) DataFileSizeMB, (select sum(size) from fs wh...
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Can you have if-then-else logic in SQL? [duplicate]

I need to do select data from a table based on some kind of priority like so: 7 Answers ...
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How to remove the default arrow icon from a dropdown list (select element)?

I want to remove the dropdown arrow from a HTML <select> element. For example: 12 Answers ...
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Select values from XML field in SQL Server 2008

... Given that the XML field is named 'xmlField'... SELECT [xmlField].value('(/person//firstName/node())[1]', 'nvarchar(max)') as FirstName, [xmlField].value('(/person//lastName/node())[1]', 'nvarchar(max)') as LastName FROM [myTable] ...
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Removing rounded corners from a element in Chrome/Webkit

...sheet for Chrome gives a border-radius of 5px to all the corners of a <select> element. I've tried getting rid of this by applying a radius of 0px through my external stylesheet, as well inline on the element itself; I've tried both border-radius:0px and -webkit-border-radius:0px; and I...
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Change the selected value of a drop-down list with jQuery

... jQuery's documentation states: [jQuery.val] checks, or selects, all the radio buttons, checkboxes, and select options that match the set of values. This behavior is in jQuery versions 1.2 and above. You most likely want this: $("._statusDDL").val('2'); ...