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Top Forums Shell Programming and Scripting Korn shell script - SQL statement challenges Post 302848439 by pchang on Thursday 29th of August 2013 09:56:00 AM
Old 08-29-2013
Korn shell script - SQL statement challenges

Hi scripting experts.

I have some coding challenges that I'm hoping you can help me out.

I have one file#1 that contains the following sql statement that spans over multiple lines:

Code:
sql Select /*+ use_has(a,b) */ *
    from customer a,
         customer_address b
    where a.id = b.id
    -- and a.id is not null
    and b.address is not null

First step - Cleanup the file to remove blank lines, comments (#) and convert sql statement to span over 1 line only

Code:
cat file#1 | sed '/^$/d' | sed '/^#/d' | tr '\n\r' ' ' > tmp_file#1
echo >>tmp_file#1

tmp_file#1 now contains:
Code:
sql Select /*+ use_has(a,b) */ *     from customer a,          customer_address b     where a.id = b.id -- and a.id is not null and b.address is not null

Challenge#1:
The condition "and b.address is not null" should not be commented out.
I'm thinking the comment part "-- and a.id is not null" should become "/* and a.id is not null */ in order to comment that condition only
How can I easily handle this?
Note: Comments can appear anywhere in the sql statement


Next, I have a second file#2 as follows which I need to replace $$SQL with the sql statement above:

Code:
Existing
...
$$SQL=select count(*) from dual
....

New
...
$$SQL=sql Select /*+ use_has(a,b) */ *     from customer a,          customer_address b     where a.id = b.id -- and a.id is not null and b.address is not null
....

Code:
sSqlStmt="sql Select /*+ use_has(a,b) */ *     from customer a,          customer_address b     where a.id = b.id -- and a.id is not null and b.address is not null"


sed -e "s/\$\$SQL=.*/\$\$SQL=$sSqlStmt/"

Challenge#2:
The "/" and "*" in the sql statment is not producing the desired results by the sed command

I get an error such as "sed function cannot be parsed".


Thank you for any help or insight that you can provide
 

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SQL::Translator::Producer::SQLServer(3pm)		User Contributed Perl Documentation		 SQL::Translator::Producer::SQLServer(3pm)

NAME
SQL::Translator::Producer::SQLServer - MS SQLServer producer for SQL::Translator SYNOPSIS
use SQL::Translator; my $t = SQL::Translator->new( parser => '...', producer => 'SQLServer' ); $t->translate; DESCRIPTION
This is currently a thin wrapper around the nextgen SQL::Translator::Generator::DDL::SQLServer DDL maker. Extra Attributes field.list List of values for an enum field. TODO
* !! Write some tests !! * Reserved words list needs updating to SQLServer. * Triggers, Procedures and Views DO NOT WORK # Text of view is already a 'create view' statement so no need to # be fancy foreach ( $schema->get_views ) { my $name = $_->name(); $output .= " "; $output .= "-- -- View: $name -- " unless $no_comments; my $text = $_->sql(); $text =~ s/ //g; $output .= "$text GO "; } # Text of procedure already has the 'create procedure' stuff # so there is no need to do anything fancy. However, we should # think about doing fancy stuff with granting permissions and # so on. foreach ( $schema->get_procedures ) { my $name = $_->name(); $output .= " "; $output .= "-- -- Procedure: $name -- " unless $no_comments; my $text = $_->sql(); $text =~ s/ //g; $output .= "$text GO "; } SEE ALSO
SQL::Translator AUTHORS
See the included AUTHORS file: http://search.cpan.org/dist/SQL-Translator/AUTHORS <http://search.cpan.org/dist/SQL-Translator/AUTHORS> COPYRIGHT
Copyright (c) 2012 the SQL::Translator "AUTHORS" as listed above. LICENSE
This code is free software and may be distributed under the same terms as Perl itself. perl v5.14.2 2012-05-10 SQL::Translator::Producer::SQLServer(3pm)
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