A Guide to SQL
9th Edition
ISBN: 9781111527273
Author: Philip J. Pratt
Publisher: Course Technology Ptr
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Chapter 5, Problem 15RQ
Program Plan Intro
Join:
The “JOIN ON” syntax is usually used to join two or more than two tables. This syntax usually works with “WHERE” clause. The keyword “JOIN” is normally placed between the table names in the SQL FROM clause. The keyword “ON” includes the matching key values.
Inner join:
- Rows included in inner join: Inner join is the joining method that gets all rows with matching values in both the tables.
- This does not include non-matching rows.
- Clause used in inner join operation: Inner join operation uses “INNER JOIN” clause to join the tables.
Syntax:
SELECT column_Name(s) FROM table_Name1 INNER JOIN table_Name2 ON table_Name1.column_Name = table_Name2.column_Name;
Cartesian product:
- It is the formal name for multiplying two tables.
- It is also called as “CROSS JOIN” that returns the result that contains the product of number of rows in the first and second table.
- If “WHERE” clause is used in “CROSS JOIN” then it works like “INNER JOIN”.
Syntax:
SELECT table_Name1.column_Name1, table_Name2.column_Name2… FROM table_Name1, table_Name2,…;
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Chapter 5 Solutions
A Guide to SQL
Ch. 5 - Prob. 1RQCh. 5 - Prob. 2RQCh. 5 - Prob. 3RQCh. 5 - Prob. 4RQCh. 5 - Prob. 5RQCh. 5 - Prob. 6RQCh. 5 - Prob. 7RQCh. 5 - What does it mean for two tables to be union...Ch. 5 - Prob. 9RQCh. 5 - Prob. 10RQ
Ch. 5 - Prob. 11RQCh. 5 - Prob. 12RQCh. 5 - Prob. 13RQCh. 5 - Prob. 14RQCh. 5 - Prob. 15RQCh. 5 - Prob. 1TDCh. 5 - Prob. 2TDCh. 5 - Prob. 3TDCh. 5 - Prob. 4TDCh. 5 - Prob. 5TDCh. 5 - Prob. 6TDCh. 5 - Prob. 7TDCh. 5 - Prob. 8TDCh. 5 - Prob. 9TDCh. 5 - Prob. 10TDCh. 5 - Prob. 11TDCh. 5 - Prob. 12TDCh. 5 - Prob. 13TDCh. 5 - Prob. 14TDCh. 5 - Prob. 15TDCh. 5 - Prob. 16TDCh. 5 - Prob. 17TDCh. 5 - Prob. 18TDCh. 5 - Prob. 20TDCh. 5 - Prob. 21TDCh. 5 - Prob. 1CATCh. 5 - Prob. 2CATCh. 5 - Prob. 3CATCh. 5 - Prob. 4CATCh. 5 - Prob. 5CATCh. 5 - Prob. 6CATCh. 5 - Repeat Exercise 6, but this time use the EXISTS...Ch. 5 - Prob. 8CATCh. 5 - Prob. 9CATCh. 5 - Prob. 10CATCh. 5 - Prob. 11CATCh. 5 - Prob. 12CATCh. 5 - Prob. 13CATCh. 5 - Prob. 14CATCh. 5 - Prob. 15CATCh. 5 - Prob. 16CATCh. 5 - Prob. 17CATCh. 5 - Prob. 18CATCh. 5 - Prob. 1SCGCh. 5 - Prob. 2SCGCh. 5 - Prob. 3SCGCh. 5 - Prob. 4SCGCh. 5 - Repeat Exercise 4, but this time use the EXISTS...Ch. 5 - Prob. 6SCGCh. 5 - Prob. 7SCGCh. 5 - Prob. 8SCGCh. 5 - Prob. 9SCGCh. 5 - Prob. 10SCGCh. 5 - Prob. 11SCGCh. 5 - Prob. 12SCGCh. 5 - Prob. 13SCGCh. 5 - Prob. 14SCGCh. 5 - Prob. 15SCGCh. 5 - Prob. 16SCG
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- What are the key distinctions between a full outer join, a complete outer join, and a left outer join?arrow_forwardWhat is equi-join?arrow_forwardFor the following spatial join problems, answer the series of questions in the text and then state the type of join that should be used: simple inside, simple distance, summarized inside, or summarized distance. Determine the number of parcels within each of Austin’s watersheds. Find the closest school for each house in a realtor’s database. Find the land use zoning type associated with each well in Atlanta. Determine the number of counties and the total number of people served by each airport in the United States.arrow_forward
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