大约有 47,000 项符合查询结果(耗时:0.0414秒) [XML]

https://stackoverflow.com/ques... 

How do I get currency exchange rates via an API such as Google Finance? [closed]

... require any kind of sign up. [http://query.yahooapis.com/v1/public/yql?q=select * from yahoo.finance.xchange where pair in ("USDEUR", "USDJPY", "USDBGN", "USDCZK", "USDDKK", "USDGBP", "USDHUF", "USDLTL", "USDLVL", "USDPLN", "USDRON", "USDSEK", "USDCHF", "USDNOK", "USDHRK", "USDRUB", "USDTRY", "USD...
https://stackoverflow.com/ques... 

Set folder browser dialog start location

... Just set the SelectedPath property before calling ShowDialog. fdbLocation.SelectedPath = myFolder; share | improve this answer ...
https://stackoverflow.com/ques... 

How can I return pivot table output in MySQL?

...OUP BY. The basic SQL providing this pivot can look something like this: SELECT P.`company_name`, COUNT( CASE WHEN P.`action`='EMAIL' THEN 1 ELSE NULL END ) AS 'EMAIL', COUNT( CASE WHEN P.`action`='PRINT' AND...
https://stackoverflow.com/ques... 

Use '=' or LIKE to compare strings in SQL?

... To see the performance difference, try this: SELECT count(*) FROM master..sysobjects as A JOIN tempdb..sysobjects as B on A.name = B.name SELECT count(*) FROM master..sysobjects as A JOIN tempdb..sysobjects as B on A.name LIKE B.name Comparing strings with '=' is muc...
https://stackoverflow.com/ques... 

Best way to do nested case statement logic in SQL Server

... You could try some sort of COALESCE trick, eg: SELECT COALESCE( CASE WHEN condition1 THEN calculation1 ELSE NULL END, CASE WHEN condition2 THEN calculation2 ELSE NULL END, etc... ) share ...
https://stackoverflow.com/ques... 

Apply function to all elements of collection through LINQ [duplicate]

... @BKSpurgeon: Select is a projection: 1) it's lazily evaluated; just calling it won't do anything. 2) Select produces a result - ForEach doesn't. – Jon Skeet Mar 20 '17 at 9:24 ...
https://stackoverflow.com/ques... 

What is the difference between Non-Repeatable Read and Phantom Read?

...e query have the same value before and after, but different rows are being selected (because B has deleted or inserted some). Example: select sum(x) from table; will return a different result even if none of the affected rows themselves have been updated, if rows have been added or deleted. In ...
https://stackoverflow.com/ques... 

SQL query to group by day

...dateadd(DAY,0, datediff(day,0, created)) return '2009-11-02 00:00:00.000' select sum(amount) as total, dateadd(DAY,0, datediff(day,0, created)) as created from sales group by dateadd(DAY,0, datediff(day,0, created)) share ...
https://stackoverflow.com/ques... 

How to identify all stored procedures referring a particular table

... SELECT Name FROM sys.procedures WHERE OBJECT_DEFINITION(OBJECT_ID) LIKE '%TableNameOrWhatever%' BTW -- here is a handy resource for this type of question: Querying the SQL Server System Catalog FAQ ...
https://stackoverflow.com/ques... 

SQL-Server: The backup set holds a backup of a database other than the existing

...go for the restore option Under Options on the left pane don't forget to select Overwrite the existing database Preserve the replication settings That's it share | improve this answer ...