What's the difference between inner join and left join?


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Can we join 3 tables in sql?

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How to avoid using cursors? What to use instead of cursor and in what cases to do so?

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How do I find duplicates in a single column in sql?

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What are secondary keys?

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if a table is getting updated what happens if a function is called from sql query?

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What are different categories of sql commands?

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Why having clause is used in sql?

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Give an example of Full Outer Join?

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