大约有 47,000 项符合查询结果(耗时:0.0358秒) [XML]

https://stackoverflow.com/ques... 

How to check for Is not Null And Is not Empty string in SQL server?

... ('A'), (''), (' '), (NULL); SELECT * FROM T WHERE C <> '' Returns just the single row A. I.e. The rows with NULL or an empty string or a string consisting entirely of spaces are all excluded by this query. SQL Fiddle ...
https://stackoverflow.com/ques... 

How to get the mysql table columns data type?

... You can use the information_schema columns table: SELECT DATA_TYPE FROM INFORMATION_SCHEMA.COLUMNS WHERE table_name = 'tbl_name' AND COLUMN_NAME = 'col_name'; share | im...
https://stackoverflow.com/ques... 

symbol(s) not found for architecture i386

.... To add frameworks, right click on the project name in the project view, select Add, then select Existing frameworks... from the list. Then find the framework with the symbols you're missing. As to how you find which frameworks you need, I've found using google the easiest, though you could proba...
https://stackoverflow.com/ques... 

Query to list all stored procedures

...e not in the master database, system stored procedures won't be returned. SELECT * FROM DatabaseName.INFORMATION_SCHEMA.ROUTINES WHERE ROUTINE_TYPE = 'PROCEDURE' If for some reason you had non-system stored procedures in the master database, you could use the query (this will filter out MOST ...
https://stackoverflow.com/ques... 

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...
https://stackoverflow.com/ques... 

Pad a string with leading zeros so it's 3 characters long in SQL Server 2008

... If the field is already a string, this will work SELECT RIGHT('000'+ISNULL(field,''),3) If you want nulls to show as '000' It might be an integer -- then you would want SELECT RIGHT('000'+CAST(field AS VARCHAR(3)),3) As required by the question this answer only w...
https://stackoverflow.com/ques... 

How to get all Errors from ASP.Net MVC modelState?

... Using LINQ: IEnumerable<ModelError> allErrors = ModelState.Values.SelectMany(v => v.Errors); share | improve this answer | follow | ...
https://stackoverflow.com/ques... 

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) *...
https://stackoverflow.com/ques... 

What is your most productive shortcut with Vim?

...e used as subjects for other "statements." So, one way to cut an arbitrary selection of text would be to drop a mark (I usually use 'a' as my "first" mark, 'z' as my next mark, 'b' as another, and 'e' as yet another (I don't recall ever having interactively used more than four marks in 15 years of u...
https://stackoverflow.com/ques... 

Overloaded method selection based on the parameter's real type

... I expect the method selection to take in consideration the real (not the declared) parameter type. Am I missing something? Yes. Your expectation is wrong. In Java, dynamic method dispatch happens only for the object the method is called ...