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Citigroup Interview Question for Analysts


Country: United States
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Comment hidden because of low score. Click to expand.
1
of 1 vote

One of the differences (in case of equi-joins) is that an inner join query retrieves only the common data whereas an outer join retrieves at least complete data set from one of the tables.

- Ashish June 19, 2012 | Flag Reply
Comment hidden because of low score. Click to expand.
1
of 1 vote

Inner Join: Inner Join occurs between two relations when matching tuples are found and join together in a single tuple.

Left Outer Join: It is one type of Outer Join where, two relations R & S are combined regardless of matching tuples and all the fields of the left relation should be present in the combined relation and if any field is not found for the right relation fill this field with NULL value.

View: View is a Virtual Table in the database system. "CREATE VIEW view_name AS SELECT column 1, column 2 FROM table_name WHERE condition..... " --- by using this statement we create view....

- Arunava Chanda October 18, 2012 | Flag Reply
Comment hidden because of low score. Click to expand.
0
of 0 vote

The difference between an inner and outer join is here:

programmerinterview.com/index.php/database-sql/inner-vs-outer-joins/

- Sandy April 08, 2012 | Flag Reply


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