Web developers use optional LINQ Take clause when they want to include in a query a specified number of contiguous elements from the start of a result list which is specified by the count parameter:
Take count
where count is required value or an expression that evaluates to the number of elements of the sequence to return.
How to delete a primary key from table in SQL Server Table Designer
Developers delete a primary key constraint when they want to remove the requirement for uniqueness for the values entered in a column or a combination or columns.
1. In Object Explorer, right-click the table with the primary key, and click Design (Modify in SP1 or earlier).
The table opens in …
Web developers use optional LINQ Skip While clause to bypass elements from the beginning of a query result until the supplied expression returns false. After expression returns false, the query returns all the remaining elements and the expression is ignored for the remaining result.
The Skip While clause can be used to exclude elements from …
Web developers use optional LINQ Skip clause when they want to bypass, specified by the count parameter, elements at the beginning of a results list and return the remaining elements. Web developers can combine the Skip clause with the Take clause to return a range of data from any segment of a query, by passing the …
Web developers use optional LINQ Distinct clause when they want to receive a list of unique items. The Distinct clause ignores duplicate query results and can be applied to duplicate values for all return fields specified by the Select clause. If no Select clause is specified, the Distinct clause is applied to the range variable for the query …
Developers arrange the tables in a database diagram to see each table and relationship clearly. When developers working with SQL Server “Denali”, MS SQL Server 2008 R2 and MS SQL Server 2005 want to arrange tables in diagrams, they should follow the next steps:
1. Right-click in the empty space in the Database …
Web developers can use optional LINQ Let clause to compute values for each query result and reference them by using an alias. The alias can be used in other clauses, such as the Where clause. By using Let clause, Web developers can create a query statement that is easier to read because they can specify an alias for …
Developers can save a specific table or a set of tables if they do not want to save all the changes they made in a database diagram. When Developers working with SQL Server “Denali”, MS SQL Server 2008 R2 and MS SQL Server 2005 want to save selected tables, they should follow the next steps:
1. In …
Web developers use LINQ join clause when they want to associate elements from different source sequences that have no direct relationship in the object model. For example, an electronic devices distributor might have a list of suppliers of a certain product, and a list of buyers. A join clause can be used, for example, to create a list …
How to open a database diagram in SQL Server Object Explorer
Developers whose are owner of the diagram or are members of the db_owner role of the database can open it to see or edit the diagram’s structure. When Developers working with SQL Server “Denali”, MS SQL Server 2008 R2 and MS SQL Server 2005 want to open a database diagram, they should follow the next steps:
1. …