Answer Posted / pandiyan

Primary key doesnot allow null value but unique key allows
null value.

Difference between oracle's plus (+) notation and ansi join notation?

1160

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what are actual and formal parameters?

1159

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How to delete multiple rows from a table in oracle?

1113

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How to create a new user account in oracle?

1064

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What is rich query?

1032

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What will be the syntax to find current date and time in format "yyyy-mm-dd"?

1063

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what is a Nested Loop join?

2173

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I have a database backup file in .db (ext) form how to conver it into .dmp (ext.) for oracle database

2183

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Explain the truncate in oracle?

1011

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How do I learn what codesets are available in oracle?

1077

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11. Display the client number and name and the client number and name of the person who referred that client.

2388

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What is blob data type in oracle?

1205

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What is transaction control statement and how many types of transaction control statement in Oracle?

1233

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> CREATE OR REPLACE FUNCTION FACTORIAL_1(factstr varchar2 ) 2 RETURN NUMBER AS 3 new_str VARCHAR2(4000) := factstr||'*' ; 4 fact number := 1 ; 5 BEGIN 6 7 WHILE new_str IS NOT NULL 8 LOOP 9 fact := fact * TO_NUMBER(SUBSTR(new_str,1,INSTR(new_str,'*')-1)); 10 new_str := substr( new_str,INSTR(new_str,'*')+1); 11 END LOOP; 12 13 RETURN fact; 14 15 END; explanation Above program?

2090

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Explain the use of Merge statement in oracle 11g

1074

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