大约有 47,000 项符合查询结果(耗时:0.0275秒) [XML]

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TSQL - Cast string to integer or return default value

...ing DECLARE @Test TABLE(Value nvarchar(50)) -- Result INSERT INTO @Test SELECT '1234' -- 1234 INSERT INTO @Test SELECT '1,234' -- 1234 INSERT INTO @Test SELECT '1234.0' -- 1234 INSERT INTO @Test SELECT '-1234' -- -1234 INSERT INTO @Test SELECT '$1234' ...
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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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ORA-00979 not a group by expression

... You must put all columns of the SELECT in the GROUP BY or use functions on them which compress the results to a single value (like MIN, MAX or SUM). A simple example to understand why this happens: Imagine you have a database like this: FOO BAR 0 A 0 ...
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ASP.NET MVC Html.DropDownList SelectedValue

...m: I had the following: Controller: ViewData["DealerTypes"] = Helper.SetSelectedValue(listOfValues, selectedValue) ; View <%=Html.DropDownList("DealerTypes", ViewData["DealerTypes"] as SelectList)%> Changed by the following: View <%=Html.DropDownList("DealerTypesDD", ViewData["De...
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How to show disable HTML select option in by default?

... a drop-down menu from the mysql table and hard-coded too. I have multiple select in my page, One of them is 11 Answers ...
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Oracle SELECT TOP 10 records

I have an big problem with an SQL Statement in Oracle. I want to select the TOP 10 Records ordered by STORAGE_DB which aren't in a list from an other select statement. ...
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SQL Server query - Selecting COUNT(*) with DISTINCT

... Count all the DISTINCT program names by program type and push number SELECT COUNT(DISTINCT program_name) AS Count, program_type AS [Type] FROM cm_production WHERE push_number=@push_number GROUP BY program_type DISTINCT COUNT(*) will return a row for each unique count. What you want is C...
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this.setState isn't merging states as I would expect

...do recursive merge. You can use the value of the current state this.state.selected to construct a new state and then call setState() on that: var newSelected = _.extend({}, this.state.selected); newSelected.name = 'Barfoo'; this.setState({ selected: newSelected }); I've used function _.extend() ...
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PHP method chaining?

...imed at creating a DSL. Ex: $foo->setBar(1)->setBaz(2) vs $table->select()->from('foo')->where('bar = 1')->order('ASC). The latter spans multiple objects. – Gordon Sep 16 '10 at 7:32 ...
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How to copy a row and insert in same table with a autoincrement field in MySQL?

... Use INSERT ... SELECT: insert into your_table (c1, c2, ...) select c1, c2, ... from your_table where id = 1 where c1, c2, ... are all the columns except id. If you want to explicitly insert with an id of 2 then include that in your INSER...