Why is a trigger used?
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What is clustered, non-clustured and unique index. How many indexes can be created on a table ?
how can we find the select statement is indexed or not?
How many sql commands are there?
what is the difference between union and union all
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Is join same as left join?
What are the different operators available in sql?
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Where the sql database files are stored?
Which are the different types of indexes in sql?
Why do we use procedures in pl sql?
What is varchar example?
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