Querying data with transact-sql pdf free download






















The request can perform any actions, including writing data and committing the transaction. VALUES statement, and if there is an error in the transaction it will be caught ant he transaction will be rolled back. In this case no records will have been inserted.

If an INSERT statement violates a constraint or rule, or if it has a value incompatible with the data type of the column, the statement fails and an error message is returned. You create a table named Customer by running the following Transact-SQL statement: You must insert the following data into the Customer table: You need to ensure that both records are inserted or neither record is inserted.

Question: 5 Note: This question is part of a series of questions that present the same scenario. Question: 6 Note: This question is part of a series of questions that present the same scenario. This ensures that both records or neither is inserted. Computers - Programming. ISBN Your tags:. Send-to-Kindle or Email Please login to your account first Need help? Please read our short guide how to send a book to Kindle. Challenge 2: Retrieve Customer and Sales Data As you continue to work with the Adventure Works customer data, you must create queries for reports that have been requested by the sales team.

Retrieve a list of sales order revisions The SalesLT. SalesOrderHeader table contains records of sales orders. You must create some queries that handle these NULL fields appropriately. Retrieve customer contact names with middle names if known You have been asked to write a query that returns a list of customer names. Gates if a middle name is stored in the database. After you answer a question in this section. As a result, these questions will not appear in the review screen.

You create a table named Products by running the following Transact-SQL statement: You have the following stored procedure: You need to modify the stored procedure to meet the following new requirements: - Insert product records as a single unit of work. Yes B. VALUES statement, and if there is an error in the transaction it will be caught ant he transaction will be rolled back, finally an error will be raised.

The request can perform any actions, including writing data and committing the transaction. VALUES statement, and if there is an error in the transaction it will be caught ant he transaction will be rolled back. In this case no records will have been inserted. Author : Timothy L. The Exam Ref is the official study guide for Microsoft certification exams. Featuring concise coverage of the skills measured by the exam, challenging Thought Experiments, and pointers to more in-depth material for the candidate needing additional study, exam candidates get professional-level preparation for the exam.

The Exam Ref helps candidates determine their readiness for the exam, and provides Exam Tips to help maximize their performance on the exam. The organization of the material mirrors the skills measured by the exam as presented on the certification exam webpage. Tackle the toughest set-based querying and query tuning problems—guided by an author team with in-depth, inside knowledge of T-SQL.

Discover how to: Move from procedural programming to the language of sets and logic Optimize query tuning with a top-down methodology Assess algorithmic complexity to predict performance Compare data-aggregation techniques, including new grouping sets Manage data modification—insert, delete, update, merge—for performance Write more efficient queries against partitioned tables Work with graphs, trees, hierarchies, and recursive queries Plus—Use pure-logic puzzles to sharpen your problem-solving skills.

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