Hi,
In DBD::CSV you should *either* specify the column names in your csv_tables hash like this:
'col_names' => "id,value"
*or* in your data file like this:
id;value
1;foo
2;bar
BUT DON'T SPECIFY BOTH! And, IIRC, both "key" and "value" are SQL reserved words so for portability, avoid them as column names.
SELECT * FROM table WHERE value = (SELECT * ...
That is called a subselect and it is available in some but by no means all databases. It is not yet available in DBD::CSV. See
SQL::Parser for a list of the SQL syntax supported by DBD::CSV.
If those tips don't solve your problem, let me know (I'm the maintainer of DBD:CSV and SQL::Statement).
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