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When increasing the size of VARCHAR column on a large table could there be any problems?
I'm using SQL Server 2008 and I need to make a VARCHAR field bigger, from (200 to 1200) on a table with about 500k rows. What I need to know is if there are any issues I have not considered.
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搭建高可用mongodb集群（二）—— 副本集 - 大数据 & AI - 清泛网 - 专注C/...
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#进入mongodb文件夹
cd /data/mongodbtest
3、下载mongodb的安装程序包
wget http://fastdl.mongodb.org/linux/mongodb-linux-x86_64-2.4.8.tgz
注意linux生产环境不能安装32位的mongodb，因为32位受限于操作系统最大2G的文件限制。
#解压下...
How to check if one DateTime is greater than the other in C#
...erloaded < or > operators.
For example:
DateTime d1 = new DateTime(2008, 1, 1);
DateTime d2 = new DateTime(2008, 1, 2);
if (d1 < d2) { ...
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How to find largest objects in a SQL Server database?
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In SQL Server 2008, you can also just run the standard report Disk Usage by Top Tables. This can be found by right clicking the DB, selecting Reports->Standard Reports and selecting the report you want.
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How do I insert datetime value into a SQLite database?
...tes like this, date ordering and lexical ordering work out the same. E.g. '2008-02-01' > '2007-02-01', '2008-01-02' > '2008-01-01' both as strings and as dates. But you don't strictly need to care about this because SQLite ORDER BY will take care of ordering for you.
– i...
How can I group by date time column without taking time into consideration
... BY DATEADD(day, DATEDIFF(day, 0, MyDateTimeColumn), 0)
Or in SQL Server 2008 onwards you could simply cast to Date as @Oded suggested:
GROUP BY CAST(orderDate AS DATE)
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How to export data as CSV format from SQL Server using sqlcmd?
...l Invoke-Sqlcmd |Export-Csv pipeline
To adapt the example for SQL Server 2008 and 2008 R2, remove the #Requires line entirely and use the sqlps.exe utility instead of the standard PowerShell host.
Invoke-Sqlcmd is the PowerShell equivalent of sqlcmd.exe. Instead of text it outputs System.Data.Dat...
Calculate relative time in C#
...o and an ISO 8601 timestamp in the title:
<abbr class="timeago" title="2008-07-17T09:24:17Z">July 17, 2008</abbr>
into something like this:
<abbr class="timeago" title="July 17, 2008">4 months ago</abbr>
which yields: 4 months ago. As time passes, the timestamps will au...
Identity increment is jumping in SQL Server database
...e flag 272 which makes the IDENTITY allocation logged as in versions up to 2008 R2. This applies globally to all databases.
Or, for recent versions, execute ALTER DATABASE SCOPED CONFIGURATION SET IDENTITY_CACHE = OFF to disable the identity caching for a specific database.
You should be aware no...
Lock Escalation - What's happening here?
While altering a table (removing a column) in SQL Server 2008, I clicked the Generate Change Script button and I noticed that the change script it generated drops the column, says "go" and then runs an additional ALTER TABLE statement that appears to set the lock escalation for the table to "TABLE"....