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How to drop SQL default constraint without knowing its name?
In Microsoft SQL Server, I know the query to check if a default constraint exists for a column and drop a default constraint is:
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Generate random int value from 3 to 6
Is it possible in Microsoft SQL Server generate random int value from Min to Max (3-9 example, 15-99 e.t.c)
10 Answers
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Get records with max value for each group of grouped SQL results
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There's a super-simple way to do this in mysql:
select *
from (select * from mytable order by `Group`, age desc, Person) x
group by `Group`
This works because in mysql you're allowed to not aggregate non-group-by columns, in which case mysql just returns the first r...
SQL to find the number of distinct values in a column
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An sql sum of column_name's unique values and sorted by the frequency:
SELECT column_name, COUNT(*) FROM table_name GROUP BY column_name ORDER BY 2 DESC;
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Turning a Comma Separated string into individual rows
I have a SQL Table like this:
16 Answers
16
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How to select unique records by SQL
...Your data seems to indicate the minimum data value so in this instance for SQL Server.
SELECT item, min(data)
FROM table
GROUP BY item
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What's the difference between INNER JOIN, LEFT JOIN, RIGHT JOIN and FULL JOIN? [duplicate]
...nce between INNER JOIN , LEFT JOIN , RIGHT JOIN and FULL JOIN
in MySQL ?
3 Answers
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CentOS 6.4下Squid代理服务器的安装与配置 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...户申请同样的页面时，Squid 把保存的备份立即传给用户，使用户觉得速度相当快。Squid 可以代理HTTP、FTP、GOPHER、SSL和WAIS等协议并且Squid 可以自动地进行处理，可以根据自己的需要设置Squid，使之过滤掉不想要的东西。
1.1 工作...
What's the hardest or most misunderstood aspect of LINQ? [closed]
...a mistaken impression of. I won't be specifically talking about LINQ to SQL or the Entity Framework except as examples of how queries can be executed remotely using expression trees (and usually IQueryable ).
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SQL function as default parameter value?
...ET @currentDate = COALESCE(@currentDate,GETDATE())
– SQLMenace
Jan 22 '09 at 20:32
I was using that previously. "I was...