sql server tutorial for beginners pdf

Label: There is data need to use SQL Server R2, directly to start the installation, because it is under the non-administrator account, directly caused the installation failure. The fix also ended in failure. After go to administrator account under the perfect uninstall, you can reinstall.Method/Step After the installation fails, use the SQL

The core of SQL Server support for XML is the format of XML data, which can store XML data in objects in the database, such as variables, columns, and parameters. When you configure one of these objects with an XML data type, you specify the type name as you specify a type in SQL Server.The data type of XML ensures that your XML data is well built and is complian

Problem Description: When attaching data, you are prompted not to open the physical file, operating system error 5. The following figure: Problem reason: May be a problem with file access permissions. Solution: Locate the MDF and LDF files for the database, and grant permissions . The following figure: Find MDF and LDF files, this demo takes LDF as an example. 1. Click the file right key property--> Security--> Edit 2. Edit--> Add 3. Add--> Advanced 4. Advanced--> Find--> search

Label:To modify the table design of a database, you can use the SQL ALTER TABLE statement, which is used to add, delete, or modify table columns in an existing table.　　1> add a new column to the database table:Grammar:ALTER table name ADD column name data typeFor example: Add a new column birthday in the persons table below, with a data type of varchar (50)Enter the following syntax in the new query:ALTER TABLE ADD varchar (+)The results after inserti

In this article, I'll explain a lot about inserting data in SQL Server in the future. To create a database and table to test, the primary key in the table is a GUID, and no indexes are created in the table in order for the data to be inserted faster. GUIDs are bound to be faster than self growth, because the time you take to generate a GUID algorithm is certainly less than the number of times you requery t

DescriptionQuery () method (XML data type)This method is used to query the XML instance.Value () method (XML data type)This method is used to retrieve the value of the SQL type from an XML instance.exist () method (XML data type)This method is used to determine whether the query returns non-null results.Modify () method (XML data type)Use this method to specify an XML DML statement to perform an update.Nodes () method (XML data type)This method is use