Need Help: Subtract CurrentRowDateTime - PreviousRowDateTime from same column

Zel

Hello, please help me create this in DOMO. Thank you.

Here are the columns needed:

1. Alarm ID = (given)
2. TechName = (given)
3. Alarm Handled Store Time = (given)
4. Average Handling Time (AHT) = see detailed formula and condition below

Sorting:

TechName - A to Z
Alarm Handled Store Time - Oldest to Newest

Condition:

If TechName is the same with previous row, AHT will be computed,

AHT: (currentRow - previousRow)*24*60

If calculated AHT is zero, it will just copy the previously calculated AHT

ELSE 0

MarkSnodgrass

Here is the JSON for the ETL that you would like to put together. You will have to connect the input dataset to your actual dataset and correct any column name differences, but I tried to match your screenshot.

{"contentType":"domo/dataflow-actions","data":[{"name":"DemoAlarmTime.xlsx","id":"986a7935-4eff-4fe7-878f-7fd7c062f2ce","type":"LoadFromVault","gui":{"x":108,"y":156,"color":3238043},"dependsOn":[],"removeByDefault":false,"notes":[],"dataSourceId":"91adafad-481e-4a95-8403-d11cf696ccbe","executeFlowWhenUpdated":false,"onlyLoadNewVersions":false,"columnSettings":{},"visiblePartitionColumn":null,"versionWindow":null},{"name":"Rank & Window","id":"9e4c6190-59e3-4b51-9466-f096e1386bd8","type":"WindowAction","gui":{"x":228,"y":156},"dependsOn":["986a7935-4eff-4fe7-878f-7fd7c062f2ce"],"removeByDefault":false,"notes":[],"partitionedAggregation":false,"additions":[{"name":"Prev_AlarmTime","operation":{"type":"OFFSET","operationType":"LAG","column":"Alarm Handled Store Time","amount":"1"}}],"orderRules":[{"column":"Alarm ID","caseSensitive":false,"ascending":true}],"groupRules":[{"column":"Tech Name","caseSensitive":false}]},{"name":"Add Formula","id":"96748ab3-23aa-4407-8418-771dba6a6531","type":"ExpressionEvaluator","gui":{"x":348,"y":156},"dependsOn":["9e4c6190-59e3-4b51-9466-f096e1386bd8"],"removeByDefault":false,"notes":[],"expressions":[{"fieldName":"AHT","expression":"TIME_TO_SEC(TIMEDIFF(Alarm Handled Store Time, Prev_AlarmTime)) / 60\n","settings":null}]},{"name":"Filter Rows","id":"45465bd2-2354-4141-8d93-a81c4bd1e79d","type":"Filter","gui":{"x":468,"y":264},"dependsOn":["96748ab3-23aa-4407-8418-771dba6a6531"],"removeByDefault":false,"notes":[],"filterList":[{"leftField":"AHT","rightValue":{"value":"0","type":"DOUBLE"},"operator":"NE","andFilterList":[]}]},{"name":"Remove Duplicates","id":"4f95962d-8672-411a-a9df-4f046dab110f","type":"Unique","gui":{"x":588,"y":264},"dependsOn":["45465bd2-2354-4141-8d93-a81c4bd1e79d"],"removeByDefault":false,"notes":[],"partitionedAggregation":false,"fields":[{"name":"Tech Name","caseInsensitive":false},{"name":"Alarm Handled Store Time","caseInsensitive":false},{"name":"Prev_AlarmTime","caseInsensitive":false}]},{"name":"Join Data","id":"e0cbb736-9ab8-4a23-ac17-8b645b0fe1ad","type":"MergeJoin","gui":{"x":720,"y":156},"dependsOn":["96748ab3-23aa-4407-8418-771dba6a6531","4f95962d-8672-411a-a9df-4f046dab110f"],"removeByDefault":false,"notes":[],"joinType":"LEFT OUTER","step1":"96748ab3-23aa-4407-8418-771dba6a6531","step2":"4f95962d-8672-411a-a9df-4f046dab110f","keys1":["Tech Name","Alarm Handled Store Time"],"keys2":["Tech Name","Alarm Handled Store Time"],"schemaModification1":[],"schemaModification2":[{"name":"Alarm ID","rename":"Remove Duplicates.Alarm ID","remove":true},{"name":"Tech Name","rename":"","remove":true},{"name":"Alarm Handled Store Time","rename":"","remove":true},{"name":"Prev_AlarmTime","rename":"","remove":true},{"name":"AHT","rename":"Prev_AHT","remove":false}],"partitioningInputId":""},{"name":"Add Formula 1","id":"e08ffe31-a541-44c5-8213-e96c568bc691","type":"ExpressionEvaluator","gui":{"x":840,"y":156},"dependsOn":["e0cbb736-9ab8-4a23-ac17-8b645b0fe1ad"],"removeByDefault":false,"notes":[],"expressions":[{"fieldName":"Final_AHT","expression":"CASE when AHT = 0 and Prev_AHT is not null then Prev_AHT else AHT END","settings":null}]},{"name":"DemoAlartmTime","id":"db45f7aa-361e-4526-b80a-de22bd58d60d","type":"PublishToVault","gui":{"x":972,"y":156},"dependsOn":["e08ffe31-a541-44c5-8213-e96c568bc691"],"removeByDefault":false,"notes":[],"dataSource":{"name":"DemoAlartmTime"},"partitionIdColumns":[],"upsertColumns":[],"retainPartitionExpression":""}]}

Here is what it should look like.

You will want to use the Final_AHT field that is calculated at the end.

MarkSnodgrass

Here is the JSON for the ETL that you would like to put together. You will have to connect the input dataset to your actual dataset and correct any column name differences, but I tried to match your screenshot.

{"contentType":"domo/dataflow-actions","data":[{"name":"DemoAlarmTime.xlsx","id":"986a7935-4eff-4fe7-878f-7fd7c062f2ce","type":"LoadFromVault","gui":{"x":108,"y":156,"color":3238043},"dependsOn":[],"removeByDefault":false,"notes":[],"dataSourceId":"91adafad-481e-4a95-8403-d11cf696ccbe","executeFlowWhenUpdated":false,"onlyLoadNewVersions":false,"columnSettings":{},"visiblePartitionColumn":null,"versionWindow":null},{"name":"Rank & Window","id":"9e4c6190-59e3-4b51-9466-f096e1386bd8","type":"WindowAction","gui":{"x":228,"y":156},"dependsOn":["986a7935-4eff-4fe7-878f-7fd7c062f2ce"],"removeByDefault":false,"notes":[],"partitionedAggregation":false,"additions":[{"name":"Prev_AlarmTime","operation":{"type":"OFFSET","operationType":"LAG","column":"Alarm Handled Store Time","amount":"1"}}],"orderRules":[{"column":"Alarm ID","caseSensitive":false,"ascending":true}],"groupRules":[{"column":"Tech Name","caseSensitive":false}]},{"name":"Add Formula","id":"96748ab3-23aa-4407-8418-771dba6a6531","type":"ExpressionEvaluator","gui":{"x":348,"y":156},"dependsOn":["9e4c6190-59e3-4b51-9466-f096e1386bd8"],"removeByDefault":false,"notes":[],"expressions":[{"fieldName":"AHT","expression":"TIME_TO_SEC(TIMEDIFF(Alarm Handled Store Time, Prev_AlarmTime)) / 60\n","settings":null}]},{"name":"Filter Rows","id":"45465bd2-2354-4141-8d93-a81c4bd1e79d","type":"Filter","gui":{"x":468,"y":264},"dependsOn":["96748ab3-23aa-4407-8418-771dba6a6531"],"removeByDefault":false,"notes":[],"filterList":[{"leftField":"AHT","rightValue":{"value":"0","type":"DOUBLE"},"operator":"NE","andFilterList":[]}]},{"name":"Remove Duplicates","id":"4f95962d-8672-411a-a9df-4f046dab110f","type":"Unique","gui":{"x":588,"y":264},"dependsOn":["45465bd2-2354-4141-8d93-a81c4bd1e79d"],"removeByDefault":false,"notes":[],"partitionedAggregation":false,"fields":[{"name":"Tech Name","caseInsensitive":false},{"name":"Alarm Handled Store Time","caseInsensitive":false},{"name":"Prev_AlarmTime","caseInsensitive":false}]},{"name":"Join Data","id":"e0cbb736-9ab8-4a23-ac17-8b645b0fe1ad","type":"MergeJoin","gui":{"x":720,"y":156},"dependsOn":["96748ab3-23aa-4407-8418-771dba6a6531","4f95962d-8672-411a-a9df-4f046dab110f"],"removeByDefault":false,"notes":[],"joinType":"LEFT OUTER","step1":"96748ab3-23aa-4407-8418-771dba6a6531","step2":"4f95962d-8672-411a-a9df-4f046dab110f","keys1":["Tech Name","Alarm Handled Store Time"],"keys2":["Tech Name","Alarm Handled Store Time"],"schemaModification1":[],"schemaModification2":[{"name":"Alarm ID","rename":"Remove Duplicates.Alarm ID","remove":true},{"name":"Tech Name","rename":"","remove":true},{"name":"Alarm Handled Store Time","rename":"","remove":true},{"name":"Prev_AlarmTime","rename":"","remove":true},{"name":"AHT","rename":"Prev_AHT","remove":false}],"partitioningInputId":""},{"name":"Add Formula 1","id":"e08ffe31-a541-44c5-8213-e96c568bc691","type":"ExpressionEvaluator","gui":{"x":840,"y":156},"dependsOn":["e0cbb736-9ab8-4a23-ac17-8b645b0fe1ad"],"removeByDefault":false,"notes":[],"expressions":[{"fieldName":"Final_AHT","expression":"CASE when AHT = 0 and Prev_AHT is not null then Prev_AHT else AHT END","settings":null}]},{"name":"DemoAlartmTime","id":"db45f7aa-361e-4526-b80a-de22bd58d60d","type":"PublishToVault","gui":{"x":972,"y":156},"dependsOn":["e08ffe31-a541-44c5-8213-e96c568bc691"],"removeByDefault":false,"notes":[],"dataSource":{"name":"DemoAlartmTime"},"partitionIdColumns":[],"upsertColumns":[],"retainPartitionExpression":""}]}

Here is what it should look like.

You will want to use the Final_AHT field that is calculated at the end.

Zel

Hi @MarkSnodgrass thank you very much for this. Will explore this and let you know if it works. 😊