ehpersonal38
39 lines
1.0 KiB
Bash
Executable File
39 lines
1.0 KiB
Bash
Executable File
#!/bin/bash
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# Connect to the database and extract the data
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sqlite3 birds.db <<EOF | while IFS='|' read -r id mean_volume recorded_at; do
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.mode csv
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.headers off
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SELECT id, mean_volume, strftime('%Y-%m-%d %H:00:00', recorded_at) AS hour
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FROM volume;
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done | {
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# Initialize variables for the first hour
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current_hour=""
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total_volume=0
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count=0
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# Loop through each row of data
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while IFS='|' read -r id mean_volume hour; do
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if [[ "$hour" != "$current_hour" ]]; then
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# If we've moved on to a new hour, output the previous hour's data
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if [[ "$current_hour" != "" ]]; then
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echo "$id|$((total_volume/count))|$current_hour"
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fi
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# Reset the variables for the new hour
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current_hour="$hour"
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total_volume="$mean_volume"
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count=1
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else
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# If we're still in the same hour, add to the total and count
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total_volume="$((total_volume + mean_volume))"
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count="$((count + 1))"
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fi
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done
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# Output the final hour's data
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echo "$id|$((total_volume/count))|$current_hour"
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}
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EOF
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