mail-id table contains two columns(email_id,userid)
it contains different types of mail-ids,and no of users.
here username length is differ na,(ex-
tamil@yahoo.com,joshua@hotmail.com like)
now i want to fetch the email-ids only starting from '@'
(ex-@gmail.com,@yahoo.com,@hotmail.com
Let us suppose we have a table with structure in order
empno
empname
empdesig
empcountry
and now i want to re-organize the columns of this table to
empno
empdesig
empname
empcountry
how can i do this with queries ?
assume that table contains the data.
Hi,
I am new in oracle(SQL), could anyone help me in writing a
correct SQL.
Below is the table structure.
Table: Subsc
Fields:
1. Sub_no (this field will hold values of subscriber nos,
for e.g. S111111, S222222, S333333, S444444, etc.)
2. s_status (this field will hold values for different
status of subscriber, for e.g. 'A', 'S', 'C', etc.)
3. cus_id (this field will hold values of bill nos for e.g.
11111111, 22222222, 33333333, 44444444, etc.)
Table: Bill
Fields:
1. Bill_no this field will hold values of bill nos for e.g.
11111111, 22222222, 33333333, 44444444, etc.)
2. b_status = (this field will hold values for different
status of bill for e.g. 'O', 'C', 'S', etc.)
Note:
1. The Sub_no is a Primary key of Subsc table.
2. The cus_id is a foreign in Subsc table (referred from
Bill_no field of Bill table)
3. The Bill_no field is the Primary key of Bill table.
Query A --> I wrote a query to select cus_id/Bill_no which
is in status open (b_status = 'O') and having more than two
active subscriber (i.e. S_status = 'A') in it ( i.e. more
the two subscribers in same bill).
select s.cus_id
from subsc s
where exists (select 1 from bill
where bill_no = s.cus_id
and b_status = 'O')
and s_status = 'A'
group by s.cus_id
having count(sub_no) = 2
Problem : The above query will give the cus_id (or rather
bill_no) which are in open status (b_status ='O) and which
are having TWO ACTIVE Subscribers (s_status ='A') in it.
However, this query will also lists the cus_id/bill_no
which are having more than TWO subscribers in it
(but only two subscriber will be in Active status (s_status
= 'A') and the others will be in s_status = 'C' or s_status
= 'S'.
Help needed: I want to write a query which will fetch ONLY
the cus_id/bill_no which are in open status (b_status ='O')
and which are having ONLY TWO ACTIVE subscribers (s_status
='A') in it.
B--> If I include the sub_no in the above query then NO row
are returned.
select s.cus_id, s.sub_no
from subsc s
where exists (select 1 from bill
where bill_no = s.cus_id
and b_status = 'O')
and s_status = 'A'
group by s.cus_id, s.sub_no
having count(sub_no) = 2
Help needed: I want to modify the above query which will
fetch ONLY the cus_id/bill_no which are in open status
(b_status ='O') and which are having ONLY TWO ACTIVE
subscribers (s_status ='A') in it ALONG with the sub_no.
Thanks a lot in advance.
Regards,
Nitin
Hi,
Can anybody please explain me the flow of the below query.
I am not able to understand how this query works.
This query is for finding the Nth highest salary..
SELECT DISTINCT (a.sal)
FROM EMP A
WHERE &N = (SELECT COUNT (DISTINCT (b.sal)) FROM EMP B
WHERE a.sal<=b.sal);
If N = 2 then second highest salary will be the o/p.
If N = 3 then third highest salary will be the o/p.
and so on..
Thanks,
Nitin
what are the methods using performance tunning in sql and
pl/sql
411
Display the total debit counts, total credit counts, sum of
total debits, sum of total credits from an employee's
transaction table (a single table) containing the following
columns.
Transaction_number
Transaction_amount
Transaction_date
Transaction_type --> tells if the amount is a credit or a
debit.
As the query alone is important, the table is left with
specifying just the field's name. Pls help me with this
query.
Are there any features that are decommissioned in 11g that are
not present in 11g?
125
1. is it possible to use the cursor atttibutes (%found ,%
rowcount , %isopen , %notfound ) to our user defined cursor
names .......
cursor cursor_name is select * from scott.emp
if you use...
cursor_name%found , %rowcount ,%isopen,%notfound...will it
work...
--------------------------
2.what is the difference between the varray and index by
table ..
--------
3.
type type_name is table of number(8,3)
index by binary_integer;
identifier_name type_name;
first , last , prior , next ,trim are the methods we can
use it for the above type...simillary is there any way to
apply for cursors...
with thanks and regards..sarao...
Hi am new to PLSQL & facing problems in writing code like in
SP, Functions, so any one having some SP coding with in
depth explanation please share with me my Email ID
suvarnaatsuvarna@rediffmail.com Or taking tanning on this
please do contact me
161
What will be the output of the following
String S = 1+2+"abc" S = ?
String S1 = 1+2+"abc"+5+6 S1 = ?
ERROR:Insert or update on table"accnt" violates foreign key
constraints "acct_to_curr_symbol"
DETAILS:KEY(accnt_curr_id)(-2)is not
present in the table "curr_symbol" ......solve The Problem..
Could you please provide oca (oracle 10g) dumps for my
certification ?
488
If i can use sys.check_constraints to display my constraints
from my database using sql server 2005, how can i display
then if i am using sql server 2000????
761
Hi,
I am new in oracle(SQL), could anyone help me in writing a
correct SQL.
Below is the table structure.
Table: Subsc
Fields:
1. Sub_no (this field will hold values of subscriber nos,
for e.g. S111111, S222222, S333333, S444444, etc.)
2. s_status (this field will hold values for different
status of subscriber, for e.g. 'A', 'S', 'C', etc.)
3. cus_id (this field will hold values of bill nos for e.g.
11111111, 22222222, 33333333, 44444444, etc.)
Table: Bill
Fields:
1. Bill_no this field will hold values of bill nos for e.g.
11111111, 22222222, 33333333, 44444444, etc.)
2. b_status = (this field will hold values for different
status of bill for e.g. 'O', 'C', 'S', etc.)
Note:
1. The Sub_no is a Primary key of Subsc table.
2. The cus_id is a foreign in Subsc table (referred from
Bill_no field of Bill table)
3. The Bill_no field is the Primary key of Bill table.
Query A --> I wrote a query to select cus_id/Bill_no which
is in status open (b_status = 'O') and having more than two
active subscriber (i.e. S_status = 'A') in it ( i.e. more
the two subscribers in same bill).
select s.cus_id
from subsc s
where exists (select 1 from bill
where bill_no = s.cus_id
and b_status = 'O')
and s_status = 'A'
group by s.cus_id
having count(sub_no) = 2
Problem : The above query will give the cus_id (or rather
bill_no) which are in open status (b_status ='O) and which
are having TWO ACTIVE Subscribers (s_status ='A') in it.
However, this query will also lists the cus_id/bill_no
which are having more than TWO subscribers in it
(but only two subscriber will be in Active status (s_status
= 'A') and the others will be in s_status = 'C' or s_status
= 'S'.
Help needed: I want to write a query which will fetch ONLY
the cus_id/bill_no which are in open status (b_status ='O')
and which are having ONLY TWO ACTIVE subscribers (s_status
='A') in it.
B--> If I include the sub_no in the above query then NO row
are returned.
select s.cus_id, s.sub_no
from subsc s
where exists (select 1 from bill
where bill_no = s.cus_id
and b_status = 'O')
and s_status = 'A'
group by s.cus_id, s.sub_no
having count(sub_no) = 2
Help needed: I want to modify the above query which will
fetch ONLY the cus_id/bill_no which are in open status
(b_status ='O') and which are having ONLY TWO ACTIVE
subscribers (s_status ='A') in it ALONG with the sub_no.
Thanks a lot in advance.
Regards,
Nitin
307
i have some prob
lem to tell me about my self in interview first round ...
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