大约有 12,000 项符合查询结果(耗时:0.0306秒) [XML]

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Why would someone use WHERE 1=1 AND in a SQL clause?

...box. The choices in the drop-down are given by: select distinct a from t union all select '*' from sysibm.sysdummy1 so that you get all possible values plus "*". If the user selects "*" from the drop down box (meaning all values of a should be selected), the query has to be modified (by Javascr...
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Editing dictionary values in a foreach loop

...decimal)c.Value / (decimal)totalCount >= .05M); var newColStates = over.Union(new Dictionary<string, int>() { { "Other", under.Sum(c => c.Value) } }); foreach (var item in newColStates) { Console.WriteLine("{0}:{1}", item.Key, item.Value); } ...
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Cannot resolve the collation conflict between “SQL_Latin1_General_CP1_CI_AS” and “Latin1_General_CI_

... If the same two fields are used together in other places (comparisons, unions, coalesce, etc...) make sure that each of those also have the collation specified. – Zarepheth Feb 17 '14 at 21:26 ...
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How do I define a method in Razor?

...fined in your Code folder, with a set of static methods as suggested here: asp.net/mvc/overview/older-versions-1/views/… – jeanie77 Jan 17 '17 at 10:02 ...
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How to print register values in GDB?

...p $eax # $2 = 1 This syntax can also be used to select between different union members e.g. for ARM floating point registers that can be either floating point or integers: p $s0.f p $s0.u From the docs: Any name preceded by ‘$’ can be used for a convenience variable, unless it is one of...
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How to return a value from a Form in C#?

...nly a date is needed //but normally I include optional data (as if a C UNION type) //the form that responds to the event decides if //the data is for it. public DateTime date { get; set; } //CI_STOCKIN public StockClass inStock { get; set; } } Then use the delegate within ...
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Useful GCC flags for C

...rning. -Waggregate-return: warn if any functions that return structures or unions are defined or called. -Wcast-qual: warn whenever a pointer is cast to remove a type qualifier from the target type*. -Wswitch-default: warn whenever a switch statement does not have a default case*. -Wswitch-enum: war...
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Html helper for

... HTML Upload File ASP MVC 3. Model: (Note that FileExtensionsAttribute is available in MvcFutures. It will validate file extensions client side and server side.) public class ViewModel { [Required, Microsoft.Web.Mvc.FileExtensions(Extens...
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How to create a SQL Server function to “join” multiple rows from a subquery into a single delimited

...urn intermediate concatenations that will be -- filtered out later on UNION ALL SELECT c.VehicleID, (c.Cities + ', ' + l.City) Cities, l.Rank FROM Concatenations c -- this is a recursion! INNER JOIN RankedLocations l ON l.VehicleID = c.VehicleID AND l.R...
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Are PDO prepared statements sufficient to prevent SQL injection?

...s such as code review or static analysis, or use of an ORM, data layer, or service layer that limits dynamic sql — prepared statements are the primary tool for solving the Sql Injection problem. If you follow good application design principles, such that your data access is separated from the rest...