When you create a table, you must assign a data type to each column in the table. This section describes some of the most common data types in SQL Server. Even if you create a custom data type, it must be based on a standard SQL Server data type.
ObjectiveThe full name of SQL is the Structured Query Language (structured Query Language), which is the most commonly used language in a relational database. Not only can SQL manage the data in the database, but it can also manage the relational
SQL Server 2005 SP2 brought us the vardecimal function. At that time, a new storage format-vardecimal was introduced for the decimail and numeric data types. The vardecimal storage format allows storage of the decimal and numeric data types as a
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 SQL Server R2 Commissioning.2. Experience
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
SQL Server SP2 brings us the vardecimal feature, when a new storage format--vardecimal was introduced for decimail and numeric data types. The vardecimal storage format allows storage of the decimal and numeric data types as a variable-length column.
1. Decision Tree AlgorithmDecision Tree, also known as tree, is a tree structure similar to binary tree or multi-fork tree. A decision tree uses the attributes of a sample as a node, using the value of the attribute as a branch, that is, a process
After years of controversy, Microsoft finally cut the date-time data type, adding 4 new date-time data types in one breath in the new version of SQL Server 2008, including:
Date: A pure date data type.
Time: A pure temporal data type.
After years of controversy, Microsoft finally cut the date-time data type, adding 4 new date-time data types in one breath in the new version of SQL Server 2008, including:
Date: A pure date data type.
Time: A pure temporal data type.
A recent project to get some data that exists on other servers is implemented in a way that is pushed by other "servers" to our servers for security reasons. Our server is using SQL Server 2008 R2, other "Servers" are using SQL Server 2000, are
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