RE: how to invoke .sql file from dbi
- From: Philip.Garrett@xxxxxxxxxxx (Philip Garrett)
- Date: Wed, 24 May 2006 10:11:57 -0400
-----Original Message-----
From: Ravi.Kongara@xxxxxxx [mailto:Ravi.Kongara@xxxxxxx]
Sent: Tuesday, May 23, 2006 2:40 PM
To: DBI-Users
Subject: how to invoke .sql file from dbi
Hello all,
We have bunch of sql files ( .sql ) that we want to invoke from dbi (
Oracle ). How does it work. Dbi expects actual sql statements to be
given as it's arguments whether in case of do() or prepare() methods.
I wonder is there any option to just point the dbi to a sql file and
dbi taking care of it.
No, there isn't.
I do understand that running sql file is sqlplus feature and may not
be applicable to dbi, as dbi is more generic. We have hundreds of sql
files to be run like this. Each sql file has multiple sql statements
within it.
I know these are my options..
1) Parse sql files and assign each sql statement to string variable
and pass the string as an argument to do(). File handler routines
may come in handy for this.
This is undesirable if your SQL files have anything other than VERY
simple
SQL. For example, if your SQL files contain semicolons embedded in
quotes,
your parser will have to handle that. Also, if the files are written
specifically for sqlplus, they may contain directives to sqlplus (as
opposed to
the database) -- bind variables are one example.
2) Do not use DBI. Instead call 'sqlplus' from perl itself with file
as input parameter.
This is probably both safest and easiest. Rather than spawning a new
sqlplus for every sql file, though, you could just open a pipe to
sqlplus and
feed it the files from within perl, e.g.
use File::Copy;
open(my $SQLPLUS, '|sqlplus user/pass@dsn') or die $!;
foreach (@files) {
copy($_, $SQLPLUS);
}
close($SQLPLUS);
hth,
Philip
.
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