大约有 44,000 项符合查询结果(耗时:0.0351秒) [XML]

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How do I add options to a DropDownList using jQuery?

...lugins, var myOptions = { val1 : 'text1', val2 : 'text2' }; var mySelect = $('#mySelect'); $.each(myOptions, function(val, text) { mySelect.append( $('<option></option>').val(val).html(text) ); }); If you had lots of options, or this code needed to be run very ...
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How to return only the Date from a SQL Server DateTime datatype

... On SQL Server 2008 and higher, you should CONVERT to date: SELECT CONVERT(date, getdate()) On older versions, you can do the following: SELECT DATEADD(dd, 0, DATEDIFF(dd, 0, @your_date)) for example SELECT DATEADD(dd, 0, DATEDIFF(dd, 0, GETDATE())) gives me 2008-09-22 00:...
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SQL - using alias in Group By

... following order: FROM clause WHERE clause GROUP BY clause HAVING clause SELECT clause ORDER BY clause For most relational database systems, this order explains which names (columns or aliases) are valid because they must have been introduced in a previous step. So in Oracle and SQL Server, you...
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Using LIMIT within GROUP BY to get N results per group?

...to get all years into a single column, grouped by id and ordered by rate: SELECT id, GROUP_CONCAT(year ORDER BY rate DESC) grouped_year FROM yourtable GROUP BY id Result: ----------------------------------------------------------- | ID | GROUPED_YEAR |...
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Get index of selected option with jQuery

I'm a little bit confused about how to get an index of a selected option from a HTML <select> item. 7 Answers ...
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How can I select the first day of a month in SQL?

I just need to select the first day of the month of a given datetime variable. 30 Answers ...
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What's faster, SELECT DISTINCT or GROUP BY in MySQL?

...'t, then use DISTINCT. GROUP BY in MySQL sorts results. You can even do: SELECT u.profession FROM users u GROUP BY u.profession DESC and get your professions sorted in DESC order. DISTINCT creates a temporary table and uses it for storing duplicates. GROUP BY does the same, but sortes the disti...
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MySQL “WITH” clause

... You might be interested in somethinkg like this: select * from ( select * from table ) as Subquery share | improve this answer | follow ...
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How to use GROUP BY to concatenate strings in SQL Server?

...S (1,'B',8) INSERT INTO #YourTable ([ID],[Name],[Value]) VALUES (2,'C',9) SELECT [ID], STUFF(( SELECT ', ' + [Name] + ':' + CAST([Value] AS VARCHAR(MAX)) FROM #YourTable WHERE (ID = Results.ID) FOR XML PATH(''),TYPE).value('(./text())[1]','VARCHAR(MAX)') ,1,2,'') AS NameVa...
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Oracle SQL Query for listing all Schemas in a DB

... Using sqlplus sqlplus / as sysdba run: SELECT * FROM dba_users Should you only want the usernames do the following: SELECT username FROM dba_users share | ...