Tom McLoughlin <tom@dynamiccreative.com> wrote:
> Thank you very much for your help.
>
> It's difficult for me to run analyse explain for the query given because it
> takes so long. However, the query below has a similar structure but has less
> data to process.
Seems okay, but it's better to analyse that for the real query. You can
install the auto_explain - module and enable auto_explain.log_analyze
and set auto_explain.log_min_duration to a proper value.
You can find later the explain analse - ouput in the log.
Consider all steps mit seq-scans, but as i see all seq-scan are on small
tables and the majority of rows are in the result, so an index can't
help much.
Andreas
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