Is there a better way to use a column of data in a query? Because the following way will run the query the same number of times as the number of row in the first columns. There has to be a better way. 

open <R, "<$file_col1.xls"> or die "Can't open file";

while (my $line = <R>) {
chomp($line);
$ref = (split(/\t/, $line)[0]);

my $sql = (select i.name, i.e_id, i.num, i.val, m.code from pro..icon,
+ emp..main m where i.name = m.code, m.code = '$ref'

}

[download]

One way is to insert the column(col) into a table(tbl) and use this statement: m.code = tbl..col Is there any other way to do this?

In reply to Querying from a file by rocky13

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