adventureworks2012 database for sql server 2012

Label:1/early grammatical structure of the internal connection INNER joinSELECT * from Person.person JOIN humanresources.employee on Person.Person.ID = HumanResources.Employee.IDEquivalent to an earlier version of the oldSELECT * from Person.person,humanresources.employee WHERE Person.Person.ID = HumanResources.Employee.ID2/early syntax structure for external connectionsSELECT * from Sales left JOIN Product on sales.id = product.idEquivalent toSELECT * from Sales,product WHERE sales.id *= produc

Label:Select The table before the join can be seen as the left table, and then the table is the right table.An external connection is essentially a containment. The records that are explicitly included depend on which side of the connection is used. The left OUTER join contains information from the table on the right side, and it comes from the side.The commonly used usage is to find which records in one table do not match the records in another table .For null values, two null is not equal. Nul

--Cross join produces a Cartesian value (x*y) SELECT * from Student crosses Join dbo. ClassInfo--Another way of writing select * from Student, ClassInfo--INNER join (Inner can omit) select *from Student JOIN dbo. ClassInfo on dbo. Student.class = dbo. classinfo.id;--Inner Join SELECT *from Student Inner join dbo. ClassInfo on dbo. Student.class = dbo. Classinfo.id; --on condition, usually the primary foreign key, but not limited to the primary foreign key--on condition, which allows multiple, a

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are recorded in a data table,When the Merge Agent runs, it collects GUIDs in the data tables that indicate which rows were modified at the publisher and at the Subscriber. For data that is modified only at the publisher or at the Subscriber, the corresponding actions are made directly, such asInsert,update,delete, if both parties have a GUID, the conflict is resolved in a user-specified manner, and the default publisher server takes precedence.Let's

point, you need a view to reference the individual tables in a single view. The company wants to be able to query any server and return the same data or data from its respective branch office.Here we demonstrate the application of this scenario using an example. Suppose there are two instances: ap4\net2012 and ap4\net2013 (all examples in this article are passed in a SQL

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=509) is blocked by checkpoint process (spid=23) and blocked by DB startup process (SPID=35)According to the Microsoft Engineering Analysis, "This is a recently discovered SQL bug that only happens on SP2 CU3 and CU4. This kind of blockage can occur even if you do not do backup. ”This may be due to a deadlock inside SQL Server, and it is recommended that you inst

SceneAn enterprise server has a database DB01, the database can only be updated every Sunday 0:00 data, and the amount of data is not large, the development of that kind of backup plan more appropriate? How do I set it? What is the method of restoring?Backup ScenariosTake a full backup once every Sunday.Restore ScenariosThe requirements are met in a simple mode,

Does anyone know why it is so slow to connect SQL Server with thinkphp? Configuration succeeded, wrote a method can fetch data, but particularly slow, the web has been in the circle, what is the matter? Reply content: Does anyone know why it is so slow to connect SQL Server with thinkphp? Configuration succeeded,

Key ConceptsConfiguration data compression can be implemented in both SSMS and T-SQL statements.Table and Index compressionFor row storage tables and indexes, using data compression can help reduce the size of the database. In addition to saving space, data compression can also help improve the performance of I/O-intensive workloads because the data is stored in fewer pages and queries require fewer pages t

Previous note: Starting with SQL Server 2008, we can easily export data scripts without resorting to stored procedures, but there is a slight difference in the process of exporting scripts for SQL Server 2012 and SQL

Microsoft has introduced many highly available technologies for SQL Server, such as early replication, later log shipping, database mirroring, SQL Server clustering, and so on. In SQL Server