What do you mean by merge in oracle?
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SELECT * FROM (SELECT TITLE FROM MOVIE ORDER BY RANK DESC) WHERE ROWNUM > 4; when i run the above query .it produces output as NO ROWS SELECTED.why ?plz any one help me
What is index-organized table in Oracle?
What happens if the imported table already exists?
What is the purpose of a cluster?
What is a table in oracle?
What is the recommended interval at which to run statspack snapshots, and why?
How can you use check constraints for self referential integrity?
Explain the use of control file?
We have one Package(which has many function/procedures, SQL quires etc). Now we need to check, which query or procedure is taking lot of time in that Package. ? How do we do it.
does the query needs a hint to access a materialized view?
What is key preserved table?
what is the difference between UNION AND UNIONALL