Re^2: Perl DBI

Thanks for your response. selectall_arrayref will take more time to select all the records from the table.The performance is more or less similar to mine. It takes around 2-3 minutes of span.Some seconds prior to my code.Also I did not get the required output. Any idea? Anyways I will also work on your code.

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Re^3: Perl DBI by poj (Abbot) on Jun 30, 2013 at 07:12 UTC
Add table name to * in SQL here ; `$db{$tbl} = $dbh->selectall_arrayref("SELECT NE,$tbl.* FROM $tbl");` [download] Seems that without table name Access interprets * as all fields not already specified. poj	[reply] [d/l]
Re^4: Perl DBI by Arunkumarpro (Initiate) on Jun 30, 2013 at 20:02 UTC
Can u please explain this statement?what is the reason for placing the NE as the first column? arun	[reply]
Re^5: Perl DBI by poj (Abbot) on Jun 30, 2013 at 20:09 UTC
So that you can filter the records here `if (( $_->[0] eq $bsc ) && ( $_->[3] > $thresh )){` poj	[reply] [d/l]
Re^4: Perl DBI by Arunkumarpro (Initiate) on Jun 30, 2013 at 20:23 UTC
SELECT * FROM $tbl; this statement also has the same effect? what is the differnce between your statement and the statement above?(may be in terms of performance) arun	[reply]
Re^5: Perl DBI by poj (Abbot) on Jun 30, 2013 at 20:33 UTC
If the first field of your tables is not NE then `$_->[0] eq $bsc` will not work. Using * is not recommended, apart from the performance issue you are at risk of a table change breaking your script. poj	[reply] [d/l]
Re^6: Perl DBI by Tux (Canon) on Jul 01, 2013 at 10:51 UTC