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Is it possible to specify condition in Count()?
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SQL Server implies an else null for case statements, so the count() example can be 10 characters shorter (if you count the space).
– Michael
Feb 16 '18 at 22:05
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DataSet panel (Report Data) in SSRS designer is gone
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If you are using BIDS with SQL 2008 R2 you can only get the "Report Data" menu by clicking inside the actual report layout itself.
Click inside the actual report layout.
Now select "View" from the main menu bar.
Now select "Report Data" which is the ...
Is BCrypt a good hashing algorithm to use in C#? Where can I find it? [closed]
...urity practices. If they can successfully use another attack vector (XSS, SQL Injection, CSRF, et. al.) on your site, good password security doesn't matter. That sounds like a controversial statement, but think about it: If I can get all your user information through a SQL injection attack, or I c...
Can you do greater than comparison on a date in a Rails 3 search?
...('date ASC, created_at ASC')
or you can also convert everything into the SQL notation
Note.
where("user_id = ? AND notetype = ? AND date > ?", current_user.id, p[:note_type], p[:date]).
order('date ASC, created_at ASC')
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What are the use cases of Graph-based Databases (http://neo4j.org/)? [closed]
...traversals in a graph database, but that would be quite complex queries in SQL.
The main advantages of the graph model were rapid development time and flexibility. We could quickly add new functionality without impacting existing deployments. If a potential customer wanted to import some of their o...
How to create Temp table with SELECT * INTO tempTable FROM CTE Query
I have a MS SQL CTE query from which I want to create a temporary table. I am not sure how to do it as it gives an Invalid Object name error.
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9个常用iptables配置实例 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...时候我们发现某个ip不停的往服务器发包，这时我们可以使用以下命令，将指定ip发来的包丢弃：
BLOCK_THIS_IP="x.x.x.x"
iptables -A INPUT -i eth0 -p tcp -s "$BLOCK_THIS_IP" -j DROP
以上命令设置将由x.x.x.x ip发往eth0网口的tcp包丢弃。
4.配置...
How to get the first and last date of the current year?
Using SQL Server 2000, how can I get the first and last date of the current year?
18 Answers
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Simulate CREATE DATABASE IF NOT EXISTS for PostgreSQL?
I want to create a database which does not exist through JDBC. Unlike MySQL, PostgreSQL does not support create if not exists syntax. What is the best way to accomplish this?
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Select something that has more/less than x character
... it's possible to select something that has more/less than x characters in SQL.
4 Answers
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