Answer / prasanna

we can call user defined functions in select statements

Answer / tripti gour

yes, we can call user defined function in SELECT statement.

ex:
select function_name from dual;

t1 col1 col2 nishi 5000 lucky 6700 akash 7000 i want that a query that when i insert 7000 it will show me data already present and data will not insert. if data is not present it will insert.

2 Answers   MasterCard,

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What is the quickest way to export a table to a flat file?

0 Answers  

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What is the simplest tool to run commands on oracle servers?

0 Answers  

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18. Display the clientno and total value for all orders placed by that client. Output the result in the following format: Client <clientno> has placed orders to the value of <total value>

2 Answers   Wipro,

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What is a SNAPSHOT ?

1 Answers  

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Maximum how many triggers can be updated in table ?

5 Answers   Accenture, Cap Gemini,

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what is analyze command ? what kind of statistics does it generate?

2 Answers  

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1. what is a single procedure? 2. suppose a view constructed on a query... after that in the master table a column was dropped, then what will be the status of that view? will it be invalid or something else? 3. what is mutating table error? how can you solve that problem? 4. suppose "select * from emp where empno=7788;" is running slow because of what ever the cause it is.. how can you fix it and make the execution faster? 5. will the snapshot of data will be stored in the RAM , where will ir be stored exactly. 6. how to delete 100 tables or 100000 tables' data from the schema without writing delete statement for no.of times. write an sql statement to do that job. 7. suppose a package contains so many cursors, procedures and all.. and we are using such types of procedures so many in a program. so the execution is to be stored all those packages and all to the RAM. utimately it is using many resources for each time execution. how can you reduce the time and using of resources for each execution because the query need to be run many times. how can you tune that? 8. suppose a procudere is there with specs as (a,b,c,d), all of these are IN mode only then while calling them should we pass all the 4 arguments? how to pass (b,c) only.. how ever the specs are wrote in the same order displayed in the above? 9. a function is returning a table type, how to access that function in a select statement? 10. i have a table in database A and another table in database B, how can you access the data of these two tables? write a query for that with dblinks. 11. i have two tables might have 15/20 columns in that.. i wanna send these columns(table) to the front end application for example you are using asp.net by writing a procedure. write that to perform the above job. 12. shall we create a table in the package? 13. shall we create a table in the procedure? 14. suppose i have 10 records, in that i want to select 7th record. write a query for that. cant you use rownum for this? 15. suppose my procedure has got around 20 select statements, in that some three select statements are running very slow. what will you write to detect which queries are running slowly? 16. what fields you use frequently in plan_table? 17. what is pipeline function? explain me with an example. 18. does a unique column can contain more than one null? 19. how many hints are there provided by oracle?

5 Answers   Honeywell,

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What is the relationship among database, tablespace and data file?

0 Answers  

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What are the different types of database objects?

0 Answers  

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what is difference between where clause and having clause?

13 Answers  

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Please explain the difference between outer join and inner join? With examples would be appreciable..!

6 Answers   IBM,

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