Answer / thiru

Yes. We can build a sequence generator value to a column in
a table then next columns can be handled with SQL queries.

Answer / hari kanth

ya,we can create trigger on that table
like as follows
CREATE OR REPLACE TRIGGER key_gen
BEFORE INSERT ON <table_name>
FOR EACH ROW
DECLARE
v_num NUMBER(5);
BEGIN
SELECT seq.nextval INTO v_num from dual;
:new.id:=SAM||LPAD(v_num,3,0);
END;

the <table_name> structure like as follows
(id VARCHAR2(20),
name VARCHAR2(15)
)
now you can just add the records like as follows
INSERT INTO <table_name>
(
name
)
VALUES
(
'&Name'
);
then trigger will fires and automatically it will inserts
into that table with out our knowledge.

NOTE:here "seq" is forward sequence.if it start with 1 and
incremented by 1 then the output will be like as follows

select * from <table_name>

id name

SAM001 TV
SAM002 LCD

If I have a select statment which retrives 2 rows, & that rows have the same data in all the fields except the last field and I want to merge the 2 rows to be in 1 row with concatenating the last field which have the different data.... eg: the 1st row has these fields: A-B-C the second row has: A-B-X ........ i want to merge the two row to be in one row like ----> A- B- C,X

2 Answers  

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how can get like this result table A col1 col2 --- ----- a A b B C C .. .. .. ... .. ... wants result like for a single column col1 ------ a,b,c,........n of data and another is col1 ------- A B C D ........ a b b d ........

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How to concatenate two text values in oracle?

0 Answers  

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3 Answers   Amazon, HCL,

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Can we create trigger on view in oracle?

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how to truncate date and get only time part 9:20:00

5 Answers  

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What is meant by an index?

0 Answers  

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Why does oracle 9i treat an empty string as null?

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How to make a Data Backup in oracle ? What is the procedure for creating the dump files in oracle ( any version ) ?

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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.

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I have a parent program and a child program. I want to write a statement in Exception Block of the parent program so that when the statement in the exception block is executed, the control goes to the next statement in the parent block bypassing the child block.How do i do that?

0 Answers   Mastek,

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