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How do I generate random number for each row in a TSQL Select?
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Take a look at SQL Server - Set based random numbers which has a very detailed explanation.
To summarize, the following code generates a random number between 0 and 13 inclusive with a uniform distribution:
ABS(CHECKSUM(NewId())) % 14
T...
How to make a query with group_concat in sql server [duplicate]
I know that in sql server we cannot use Group_concat function but here is one issue i have in which i need to Group_Concat my query.I google it found some logic but not able to correct it.My sql query is
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Retrieve the maximum length of a VARCHAR column in SQL Server
I want to find the longest VARCHAR in a specific column of a SQL Server table.
10 Answers
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Can I create a One-Time-Use Function in a Script or Stored Procedure?
In SQL Server 2005, is there a concept of a one-time-use, or local function declared inside of a SQL script or Stored Procedure? I'd like to abstract away some complexity in a script I'm writing, but it would require being able to declare a function.
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Formatting Numbers by padding with leading zeros in SQL Server
We have an old SQL table that was used by SQL Server 2000 for close to 10 years.
13 Answers
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LIKE vs CONTAINS on SQL Server
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Having run both queries on a SQL Server 2012 instance, I can confirm the first query was fastest in my case.
The query with the LIKE keyword showed a clustered index scan.
The CONTAINS also had a clustered index scan with additional operators for the f...
How do I get textual contents from BLOB in Oracle SQL
I am trying to see from an SQL console what is inside an Oracle BLOB.
11 Answers
11
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...就不能言明了。
或者伴随着用户的增长，遇到各种优化性能问题以及后台扩容，付出的成本说少不少，苦只有自己知道。
或者新需求出现，或者完善某个功能。有些甲方软磨硬泡，以变动不大，然后你就配合一块修改了。有...
Can I use multiple “with”?
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Try:
With DependencedIncidents AS
(
SELECT INC.[RecTime],INC.[SQL] AS [str] FROM
(
SELECT A.[RecTime] As [RecTime],X.[SQL] As [SQL] FROM [EventView] AS A
CROSS JOIN [Incident] AS X
WHERE
patindex('%' + A.[Col] + '%', X.[SQL]) > 0
)...
Datatype for storing ip address in SQL Server
What datatype should I choose for storing an IP Address in a SQL Server?
11 Answers
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