...
I have a working SQL-Query here, in which I'm using subqueries to get the needed result.
The idea behind this, is to get a list of networks which have 2 tags set in the database. Because of the way it is stored, i get a tuple for each Tag, so I get a duplicate of all networks.
The result without the subqueries:
Subqueries are evil in terms of performance. The last time I worked with this, I wrapped it in some lines of code and sorted out the duplicates.
I'm wondering if there's not a more clever alternative in plain SQL, which is not such a performance killer than the subqueries.
...
It is difficult to reproduce your test case because it is not clear as to how your data is stored in your tables.
Can you show the data in those three tables? (Maybe only for the 4 IP values in your output.)
You've shown the output without subqueries.
(a) Is the output incorrect? There do not appear to be any duplicate records in the output. The IP "1111111512" is repeated, sure, but the first record is for tag "AUTO_PROVISIONING" and the second for tag "SALES". So each tuple, as a whole, is unique. A case of duplicate records would be where you have this entire tuple:
1111111512 - 26 - AUTO_01 - AUTO_PROVISIONING
occurring more than once.
(b) Is your output *with* subqueries any different? What does your output look like with subqueries? Is that as per your expectation (but performing poorly)?
I have a script that looks for all jobs that contain a particular calendar.
Some of the calendars have '&' in them and sql freaks out when it encounters that.. is there a way around this?
I have tried:
select job_name from job where run_calendar='1&15dom'
select job_name from job... (3 Replies)
Hi ...
I am doing a switch user and then rsh and then running a sql query .
I am successfull in rsh and logging into the database , but my query doesnt run ..
Here's the command :
su - linus -c "rsh -l linus psmf ORACLE_SID=SMP;export ORACLE_SID;sqlplus... (1 Reply)
Hello Everyone,
I am looking to write a script that will run on many machines in a network at the same time. They need to write a result to a common location. I plan to use a SQLlite database as this common writing point. But the concern I have is how SQLlite will react to multiple writes that... (1 Reply)
Hi,
I am passing an argument for the script and that argument values should exist in database.
bill_period_input="'""$1""'"
bill_period=`sqlplus uname/pwd@dbname <<eof!
set verify off
set heading off
set feedback off
select bill_period from bill_period_ref where... (4 Replies)
Hi ,
I used the below script to get the sql data into csv file using unix scripting.
I m getting the output into an output file but the output file is not displayed in a separe columns .
#!/bin/ksh
export FILE_PATH=/maav/home/xyz/abc/
rm $FILE_PATH/sample.csv
sqlplus -s... (2 Replies)
Hi Everyone,
Can anyone pls help me out......with my requirement, i am struggling since 3 days. Please find the requirement below
my file contains below data
R1|Array/Network Resistor - VIP|V_RES_CLASS|V_MOUNT_FEATURE|SURFACE MOUNT|AND|8533.10.00.20|8533.10.00.20|
R1|Array/Network Resistor... (9 Replies)
I used the following code
code
select * from tablename where columnname
Instead of printing the expected output it prints all the files in the present directory since there is a "*" in the code. Is there any way to overcome the problem?
Thanks
Ananth (2 Replies)
Hi, this's Pom. I'm quite a new one for shell script but I have to do sql on shell script to query some information from database.
I found a concern to get a new line...When I run my script, it retrieves all data as wondering but it's shown in one line :(
What should I do? I'm not sure that... (2 Replies)
Hi All ,
I have tried many times am getting syntax error on 'UNION'
can anybody tell me ...
INSERT INTO table1
(
Type
, num_items
, num_letters
, total_value
)
(select
type='1',
num_items,
num_letters=count(*),
total_value=sum(letter_value)
from
table2
where
num_items = 1 (1 Reply)
Hello All,
I hope I'm posting this in the right section.
I have zero sql query writing skill, in fact, I've never done it before, but for some reason, a request came across my desk to get information from one of our databases. I have about 200 ticket numbers that have no information attached,... (8 Replies)
Discussion started by: bbbngowc
8 Replies
LEARN ABOUT DEBIAN
sql::reservedwords::sqlserver
SQL::ReservedWords::SQLServer(3pm) User Contributed Perl Documentation SQL::ReservedWords::SQLServer(3pm)NAME
SQL::ReservedWords::SQLServer - Reserved SQL words by SQL Server
SYNOPSIS
if ( SQL::ReservedWords::SQLServer->is_reserved( $word ) ) {
print "$word is a reserved SQL Server word!";
}
DESCRIPTION
Determine if words are reserved by SQL Server.
METHODS
is_reserved( $word )
Returns a boolean indicating if $word is reserved by SQL Server 7, 2000 or 2005.
is_reserved_by_sqlserver7( $word )
Returns a boolean indicating if $word is reserved by SQL Server 7.
is_reserved_by_sqlserver2000( $word )
Returns a boolean indicating if $word is reserved by SQL Server 2000.
is_reserved_by_sqlserver2005( $word )
Returns a boolean indicating if $word is reserved by SQL Server 2005.
reserved_by( $word )
Returns a list with SQL Server versions that reserves $word.
words
Returns a list with all reserved words.
EXPORTS
Nothing by default. Following subroutines can be exported:
is_reserved
is_reserved_by_sqlserver7
is_reserved_by_sqlserver2000
is_reserved_by_sqlserver2005
reserved_by
words
SEE ALSO
http://msdn2.microsoft.com/en-us/library/ms130214.aspx
AUTHOR
Christian Hansen "chansen@cpan.org"
COPYRIGHT
This program is free software, you can redistribute it and/or modify it under the same terms as Perl itself.
perl v5.8.8 2008-03-28 SQL::ReservedWords::SQLServer(3pm)