I have a table containing about 30k rows of data and there's several table associations. The problem is that there's like 18 columns, and each column requires 1 db query.

Here's an example of what I'm doing

if col_num == 0
    tmp_string_text = finding_phase
elsif col_num == 1
    tmp_string_text = ""
elsif col_num == 2
    tmp_string_text = ""
elsif col_num == 3
    tmp_string_text =  finding.vuln_finding.severity
elsif col_num == 4
    tmp_string_text = finding_node_ip
elsif col_num == 5
    tmp_string_text =  finding.node.host_name
elsif col_num == 6
    tmp_string_text =  finding.node.dns_name
elsif col_num == 7
    tmp_string_text = finding.port
elsif col_num == 8
    tmp_string_text =  finding.pentest_finding.name
elsif col_num == 9
    tmp_string_text =  finding.vuln_finding.name
elsif col_num == 10
    tmp_string_text = finding.vuln_finding.description
elsif col_num == 11
    tmp_string_text = finding.vuln_finding.solution
elsif col_num == 12
    tmp_string_text = finding.additional_output
elsif col_num == 13
    tmp_string_text = finding.cve
elsif col_num == 14
    tmp_string_text = finding.node.os
elsif col_num == 15
    tmp_string_text =  finding.node.device_type
elsif col_num == 16
    tmp_string_text =  finding.node.scan_time
end

As a result, there's going to be 15 queries to the DB per 1 row. Is there any way that I can make this more efficient? This takes a REALLY long time when I have 30k rows. Not looking for anyone to flame here, just looking for advice. Pretty new to Ruby on Rails but learning as I go.