what is oracle database ? : Sql dba

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How many types of cursors supported in pl/sql?

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Can I create table without primary key?

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How to pronounce postgresql?

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How will we see framework of a table?

2 Answers   Accenture,

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What is primary key and unique key?

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how to find the First and Last Observation from the table: Ex: OBS Name Sal Ans like: OBS Name Sal 105 E 5000--> 105 E 5000 102 B 2000 104 D 4000 103 C 3000 101 A 1000--> 104 D 4000

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Can we group by two columns in sql?

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can we write stored function in out parameters? how to call through select statement? how to written more than one value plz give the exmple?

1 Answers  

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Is sql open source?

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4. Select sum(A.salary) +sum(B.salary) as TOT_SAL from ( select LEVEL emp_id,level*100 salary,case when mod (level,2)=0then 2 else null end dept_id from dual connect by level<6 )A right outer join (select level emp_id ,level*200 salary ,case when mod (level,3)=0 then 2 else null end dept_id from dual connect by level<6)B On A.dept_id=B.dept_id And A.emp_id=B.emp-id;

1 Answers   Fintellix,

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write a query to remove null following table are id name 101 dinesh null jyothi null bharathi 102 suresh null shilpha 103 prakesh null suma i want the output format like id name 101 dinesh 102 suresh 103 prakesh

3 Answers   TCS,

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