January 2019
Beginner
556 pages
14h 19m
English
Content preview from Learning PostgreSQL 11 - Third Edition
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Questions
- What is SQL?
- What are the three main parts of SQL?
- What are keywords in SQL?
- How do we specify a constant string value in SQL code?
- How do we insert a single record into a table?
- How to insert many records into a table by taking them from another table?
- How do we change records in a table?
- How do we change records in a table that takes new values from another table?
- Is there a way to get the values of updated or inserted records right after a changing command?
- How do we retrieve data from a table?
- What is a table join?
- What is the difference between an INNER JOIN and an OUTER JOIN?
- What is a CROSS JOIN?
- How do we filter rows when retrieving them from a table?
- Is there a difference between SQL expressions and SQL conditions?
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