Why indexing is needed?
write a query that returns first characters of each word in Oracel/Sql pl sql
write a query to find 4th max salary
What is difference between nchar and nvarchar?
What will be the output for the below Query Select 'High' from dual where null = null;
How to convert comma separated string to array in pl/sql?
Can a view be updated/inserted/deleted?If Yes under what conditions?
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How many types of sql are there?
What is a sql instance vs database?
How to fix oracle error ora-00942: table or view does not exist
What is a full join?
what is an execution plan? When would you use it? How would you view the execution plan? : Sql dba