Querying microsoft sql server pdf

Create and modify constraints simple statements - Create constraints on tables; define constraints; unique constraints; default constraints; primary and foreign key constraints. Create and alter DML triggers - Inserted and deleted tables; nested triggers; types of triggers; update functions; handle multiple rows in a session; performance implications of triggers.

Work with 1. Implement sub-queries - Identify problematic elements in query plans; pivot and unpivot; apply operator; cte statement; with statement. Implement data types - Use appropriate data; understand the uses and limitations of each data type; impact of GUID newid, newsequentialid on database performance, when to use what data type for columns.

Implement aggregate queries - New analytic functions; grouping sets; spatial aggregates; apply ranking functions. Modify data 1. Work with functions - Understand deterministic, non-deterministic functions; scalar and table values; apply built-in scalar functions; create and alter userdefined functions UDFs Troublesho 1.

Optimize queries ot and - Understand statistics; read query plans; plan guides; DMVs; hints; optimize statistics IO; dynamic vs. Manage transactions - Mark a transaction; understand begin tran, commit, and rollback; implicit vs explicit transactions; isolation levels; scope and type of locks; trancount. There is a nonclustered index on the OrderTime column. The business team wants a report that displays the total number of orders placed on the current day.

You need to write a query that will return the correct results in the most efficient manner. Which Transact-SQL query should you use? Options: A. Q Your application contains a stored procedure for each country. Each stored procedure accepts an employee identification number through the EmpID parameter. You need to build a single process for each employee that will execute the appropriate stored procedure based on the country of residence.

Cursor C. Search Engine. Work at your own pace through a series of lessons and practical exercises, and then assess your skills with practice tests on CDfeaturing multiple, customizable testing options. Maximize your performance on the exam by learning how to: Create database objects Work with data Modify data Troubleshoot and optimize queries For customers who purchase an ebook version of this title, instructions for downloading the CD files can be found in the ebook.

Led by a SQL Server expert, you'll learn the concepts behind T-SQL querying and programming, and then apply your knowledge with exercises in each chapter. Once you understand the logic behind T-SQL, you'll quickly learn how to write effective codewhether you're a programmer or database administrator. Get the Pdf eBook that helps the aspirants to prepare for the Microsoft Certification exam in the best possible way with proper guidance and strategy.

All the relevant information, guidance and best strategies are shared in this book. Save my name, email, and website in this browser for the next time I comment. Terms and Conditions. Press ESC to close.