storing time series data in sql server

value. The default value for the date-time Data Type field column can be set to this "1900-01-01" base date. SQL Server provides a datetime date-time data type that internally uses two 4-byte integers to store the

tuning also give the sort including CPU, run time, total IO, physical read, logical read, etc.Of course, my local machine itself is very small, and there are not many T-SQL statements running, so the chart tool shows a lot of emptiness.Take a look at the disk storageThis is generally the above content, their own use of the time to dig it, this article provides i

15. Use Transact-SQL and Enterprise Manager to manage data tablesModifying a data table with a T-SQLUse Enterprise Manager to modify data tablesImpact of modifying a data tableDelete A data tableSummaryIn Chapter 10th, you have le

Label:Original: SQL Server 2008 Spatial Data Application Series 11: Extracting spatial data solutions from MapInfo map datatips, the prerequisites for reading this blog post are as follows:1. This sample is based on Microsoft SQL

[Practice]: Synchronize SQL server data to mysql and SQL Server mysql in real time 1. Install and install mysqlconne 2. Configure mysqlconnector ODBC data Manager-> system DSN-> Add-> m

Original: SQL Server 2008 Spatial Data Application series five: Using spatial data types in data tablestips, the prerequisites for reading this blog post are as follows:1. This sample is based on Microsoft

Label:Original: SQL Server 2008 Spatial Data Application series six: SQLCRL-based spatial data programmabilitytips, the prerequisites for reading this blog post are as follows:1. This sample is based on Microsoft SQL

Original: SQL Server 2008 Spatial Data Application Series II: the Spatial Index FoundationIn the previous blog post, we learned some basic knowledge about geographic information, and also learned about the spatial reference system, including the Earth ellipsoid, Datum, Prime Meridian, measurement unit, projection and o

Tags: SQL Server 2012 deployment Skype for business SFB back-end data server deploy SQL installation configuration Windows installation SQL 2012This post enters the third part of the Skype for Business 2015 comprehensive Deploymen

1. Select the first n rows of data You can use top in SQL Server to specify the returned rows. It is important for the top and with ties options. It can append multiple rows to the result set returned by top. These rows have the same value as the last row of the result set returned by top in the sorting column specified by the order by clause. Select Top 3 Wi

constraint_name] { PRIMARY KEY | UNIQUE } [CLUSTERED | Nonclustered] [with FILLFACTOR = FILLFACTOR | With (] ) ] | [FOREIGN KEY] REFERENCESReferenced_table_name[(Ref_column)] [On DELETE {NO ACTION | CASCADE}] [On UPDATE {NO ACTION}] [Not for REPLICATION] | CHECK [Not for REPLICATION](Logical_Expression)[On {partition_scheme_name (partition_column_name) | filegroup | "Default"}]] Column_set_definition>::=column_set_name XML Column_se

obtained.sysprocesses This table records the connection to the SQL Server database.3. Through the system's stored procedures to findSQL Codesp_who ' UserName 'Username is of course the user name of the login SQL, the general program will use a username to log in to the SQL so that the user name can be seen after the l

Select ana1,rddate,rdtime,cast (CONVERT (varchar,rddate,112) + ' +convert (varchar,rdtime,108) as DateTime, T.interval from (SELECT ana1,rddate,rdtime, DateDiff (Mi,cast (CONVERT (varchar,rddate,112) + "+convert (varchar,rdtime , 108) as DateTime), GETDATE ()) as interval from Records) as t WHERE t.interval%10 = 0 //gets 10 minutes of data at intervals, but gets the same minutes after the Repeat, further processing is still requiredSQL

SQL Server Data Recovery to pointing point in time (Full recovery)When it comes to database recovery, in fact, we generally have two of the most common, one is simple recovery, through the backup bak file directly to restore the database, the disadvantage is that there may be data