大约有 41,000 项符合查询结果(耗时:0.0459秒) [XML]

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List the queries running on SQL Server

...will show you the longest running SPIDs on a SQL 2000 or SQL 2005 server: select P.spid , right(convert(varchar, dateadd(ms, datediff(ms, P.last_batch, getdate()), '1900-01-01'), 121), 12) as 'batch_duration' , P.program_name , P.hostname , P.loginame from mast...
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SQL to find the number of distinct values in a column

I can select all the distinct values in a column in the following ways: 11 Answers 11 ...
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How to find largest objects in a SQL Server database?

...quite a bit understanding and determining the size of indices and tables: SELECT t.name AS TableName, i.name as indexName, sum(p.rows) as RowCounts, sum(a.total_pages) as TotalPages, sum(a.used_pages) as UsedPages, sum(a.data_pages) as DataPages, (sum(a.total_pages) *...
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SQL: How to perform string does not equal

... Try the following query select * from table where NOT (tester = 'username') share | improve this answer | follow ...
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How enumerate all classes with custom class attribute?

... faster (especially without empirical proof); you've basically written the Select extension method, and the compiler will generate a state machine just as it would if you called Select because of your use of yield return. Finally, any performance gains that might be obtained in the majority of case...
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Fastest method of screen capturing on Windows

...e9* pRenderTarget=NULL; IDirect3DSurface9* pDestTarget=NULL; const char file[] = "Pickture.bmp"; // sanity checks. if (Device == NULL) return; // get the render target surface. HRESULT hr = Device->GetRenderTarget(0, &pRenderTarget); // get the current adapter di...
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Is #pragma once part of the C++11 standard?

...ifferent developments, the obvious solution is to generate a lot of random characters for the include guard when you create it. (A good editor can be set up to do this for you whenever you open a new header.) But even without this, I've yet to encounter any problems with conflicts between librarie...
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What is time_t ultimately a typedef to?

... [root]# cat time.c #include <time.h> int main(int argc, char** argv) { time_t test; return 0; } [root]# gcc -E time.c | grep __time_t typedef long int __time_t; It's defined in $INCDIR/bits/types.h through: # 131 "/usr/include/bits/types.h" 3 4 # 1 "/usr/inclu...
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Correct use of Multimapping in Dapper

... I just ran a test that works fine: var sql = "select cast(1 as decimal) ProductId, 'a' ProductName, 'x' AccountOpened, cast(1 as decimal) CustomerId, 'name' CustomerName"; var item = connection.Query<ProductItem, Customer, ProductItem>(sql, (p, c) => { p.Cu...
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How to correct indentation in IntelliJ

...ode → Auto-Indent Lines (default Ctrl + Alt + I) for the current line or selection. You can customise the settings for how code is auto-formatted under File → Settings → Editor → Code Style. To ensure comments are also indented to the same level as the code, you can simply do as follows:...