sql server report builder tutorial

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