大约有 6,000 项符合查询结果（耗时：0.0311秒） [XML]
Read data from SqlDataReader
I have a SQL Server 2008 database and I am working on it in the backend. I am working on asp.net/C#
13 Answers
...
What is the difference between Scope_Identity(), Identity(), @@Identity, and Ident_Current()?
...
This is a role model answer. In particular, working with SQL and SQL Server can be weird, and this explains things in a very clear, layman's manner, while still being fairly informative. It doesn't sound like something being communicated between two database specialists, which a L...
Postgres: SQL to list table foreign keys
Is there a way using SQL to list all foreign keys for a given table? I know the table name / schema and I can plug that in.
...
SQLAlchemy ORDER BY DESCENDING?
How can I use ORDER BY descending in a SQLAlchemy query like the following?
6 Answers
...
Count number of records returned by group by
...
I know this is a SQL-Server question, but for reference: This does not work on DB/2 (in my case on IBM iSeries). See my comment at Thomas´s answer
– Bjinse
Dec 13 '12 at 8:05
...
What is the difference between “INNER JOIN” and “OUTER JOIN”?
...ur FROM A LEFT OUTER JOIN B ON A.Colour = B.Colour AND B.Colour = 'Green'
SQL Fiddle
See these examples run live at SQLFiddle.com.
share
|
improve this answer
|
follow
...
SQLite: How do I save the result of a query as a CSV file?
I'm new to SQLite. Is there a way I can export the results of a query into a CSV file?
6 Answers
...
SQL order string as number
I have numbers saved as VARCHAR to a MySQL database. I can not make them INT due to some other depending circumstances.
...
MongoDB副本集详解 优于以往的主从模式 - 大数据 & AI - 清泛网 - 专注C/C++及内核技术
...能成为primary节点，只能作为secondary副本节点，防止一些性能不高的节点成为主节点。
Hidden:这类节点是不能够被客户端制定IP引用，也不能被设置为主节点，但是可以投票，一般用于备份数据。
Delayed：可以指定一个时间延...
What are the options for storing hierarchical data in a relational database? [closed]
...the new method and get a copy of the code at the following URL.
http://www.sqlservercentral.com/articles/Hierarchy/94040/
I also developed a "pre-aggregated" hierarchy using similar methods. MLM'ers and people making bills of materials will be particularly interested in this article.
http://www.sq...