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What type of join is needed when you wish to include...

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Advanced SQL
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What type of join is needed when you wish to include rows that do not have matching values?

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Correct Answer: Option C
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Ayan Ghosh
Ayan Ghosh 6 years ago
Why we need to create a index if primary key is already present in a table?
∆ all of the above
∆ index improves the speed of data retrieval operations on a database table
∆ indexes are synonyms of a column in a table
∆ indexes are special lookup tables that the database search engine can use
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