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Customer Service or Enrol: 0800 282 353 or +44 1372 364610 |
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You Will Learn How To
- Develop complex and robust SQL queries for SQL Server 2005 and SQL Server 2000
- Query multiple tables with inner joins, outer joins and self joins
- Transform data with built-in functions
- Summarise data using aggregation and grouping
- Execute analytic functions to calculate ranks
- Build simple and correlated subqueries
Course Benefits
Microsoft's Transact-SQL is the cornerstone of all SQL Server database operations. In this hands-on course, you learn to exploit the full potential of the SELECT statement to write robust queries using the best query method for your application, test your queries, and avoid common errors and pitfalls.
Who Should Attend
Those who are developing systems using SQL Server databases, or who are using SQL to extract and analyse data from SQL Server databases. Course 131, "SQL Server 2005 Comprehensive Introduction", or Course 530, "SQL Server 2000 Comprehensive Introduction", or Course 925, "SQL Programming Language Introduction", or equivalent knowledge is assumed.
Hands-on Training
Learn by doing as you use Transact-SQL to solve problems and maximise performance. Instructor-led exercises include:
- Handling NULL values in expressions and conditions
- Coding inner and outer joins
- Implementing self joins
- Computing aggregate results
- Adding subtotals and grand totals to aggregate results
- Employing ranking and analytic functions
- Reusing subqueries as common table expressions
- Analysing query plans and tuning queries
Course Content
- Retrieving data with SELECT
- Expressions
- Literals
- Handling NULLs properly
- Analysing query plans
- Enhancing query performance
- Testing queries
- Selecting the best alternatives
- Avoiding errors and pitfalls
- Inner joins
- Cross joins
- Left, right and full outer joins
- Equijoins vs. theta joins
- The performance implications of joins
- Adding filter conditions to outer joins
- Joining a table to itself
- Chaining self joins
- Solving time-interval problems
- UNION
- UNION ALL
- INTERSECT
- EXCEPT
- Converting datatypes
- Handling dates
- Manipulating strings
- Choosing the right function for the job
- COUNT
- SUM
- AVG
- MIN
- MAX
- Managing NULLs
- Suppressing duplicates
- GROUP BY vs. GROUP BY ALL
- Applying conditions with HAVING
- Calculating moving averages
- Nesting grouped aggregates
- Joins and grouping
- Introducing subtotals with CUBE and ROLLUP
- Using CASE to turn rows into columns
- Applying PIVOT and UNPIVOT
- Specifying the ordering before applying the function
- Splitting the result set into logical partitions
- RANK and DENSE_RANK
- ROW_NUMBER with ordered sets
- Calculating percentiles
- Partitioning in multiple levels
- Computing running totals
- Comparing row and aggregate values
- Subqueries in conditions and column expressions
- Creating multilevel subqueries
- Avoiding problems when subqueries return NULLs
- Handling multirow subquery results
- Accessing values from the outer query
- EXISTS vs. IN
- Identifying duplicates
- Avoiding accidental correlation
- Reusable subqueries
- Recursive subqueries
- Traversing hierarchies
- Overcoming SQL limitations
- Reducing complexity and improving performance
- Exploring alternatives for decomposing: tables, views, common table expressions, table-valued functions
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SQL Server is a trademark of Sybase, Inc.
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| Customer Service or Enrol: 0800 282 353 or +44 1372 364610 |
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