Databases Reference
In-Depth Information
DATA ACCESS AND
MANIPULATION
Starting Point
Go to
www.wiley.com/college/gillenson
to assess your knowledge of SQL
language use.
Determine where you need to concentrate your effort.
What You'll Learn in This Chapter
▲
SELECT statement keywords and clauses
The use of joins and subqueries
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The fundamentals of writing batches and scripts
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After Studying This Chapter, You'll Be Able To
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Use common SELECT statement keywords
Design, write, and use queries to retrieve and organize data
▲
Design, write, and use queries that group data and calculate values using
aggregate functions
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Design, write, and use queries that join two or more tables
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Design, write, and use queries that use nested subqueries to retrieve data
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Given data requirements, choose either a join or subquery as the best data
retrieval solution
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Design, write, and execute batches and scripts
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Use variables in batch execution
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Control batch execution based on Boolean expressions
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