Retrieve Data from sqlite database based on the input time from date picker and moment nodes

[Isuru]

Hi,

I have tried to input two dates using two date picker and moment nodes and tried to retrieve the data from a sqlite database based on the input dates.

Database has four columns
1.timestamp - data type (Time),
2. sensor - data type (Text)
3. temperature-data type (Int)
4. humidity - data type (Int)

I wanted to get the maximum temperature of a column (temperature) where the related timestamp is between the entered dates through dashboard.

But I'm not getting the desired result.

[{"id":"ccb502ab.8b7c","type":"tab","label":"Flow 7","disabled":false,"info":""},{"id":"81091193.c336b","type":"ui_date_picker","z":"ccb502ab.8b7c","name":"Startdate","label":"Startdate","group":"cf5a7640.485f38","order":4,"width":0,"height":0,"passthru":true,"topic":"topic","topicType":"msg","className":"","x":260,"y":700,"wires":[["d6093f4b.93ef7"]]},{"id":"cb8ca93f.8091d8","type":"ui_date_picker","z":"ccb502ab.8b7c","name":"Enddate","label":"Enddate","group":"cf5a7640.485f38","order":5,"width":0,"height":0,"passthru":true,"topic":"topic","topicType":"msg","className":"","x":260,"y":800,"wires":[["4ab82caf.30b024"]]},{"id":"d6093f4b.93ef7","type":"moment","z":"ccb502ab.8b7c","name":"stday","topic":"","input":"payload","inputType":"msg","inTz":"Asia/Colombo","adjAmount":0,"adjType":"hours","adjDir":"add","format":"MM/DD/YYYY, HH:mm:ss A","locale":"en_US","output":"stday","outputType":"global","outTz":"Asia/Colombo","x":430,"y":700,"wires":[["8928cb0c.819d38"]]},{"id":"4ab82caf.30b024","type":"moment","z":"ccb502ab.8b7c","name":"enday","topic":"","input":"payload","inputType":"msg","inTz":"Asia/Colombo","adjAmount":0,"adjType":"days","adjDir":"add","format":"MM/DD/YYYY, HH:mm:ss A","locale":"en_US","output":"enday","outputType":"global","outTz":"Asia/Colombo","x":420,"y":800,"wires":[["8928cb0c.819d38"]]},{"id":"8928cb0c.819d38","type":"function","z":"ccb502ab.8b7c","name":"","func":"var stday1 = global.get(\"stday\") ||0 ;\nvar enday1 = global.get(\"enday\") ||0 ;\nvar stdaystring = stday1.toLocaleString();\nvar endaystring = enday1.toLocaleString();\n//msg.payload = d.toISOString();\n//return msg;\n//var dateObject = new Date('\"+stday1+\"');\n//var datestring = dateObject.toLocaleString();\n//return dateObject;\n/*var newmsg;\nnewmsg =  {\n    \"topic\" : \"SELECT max(humidity) from data WHERE timestamp between '\"+stday1+\"' AND '\"+enday1+\"'\"\n};\nreturn newmsg;*/\n//var b = \"SELECT max(TEMPERATURE) from data WHERE TIMESTAMP between \"+stday1+\" AND \"+enday1+\"\";\n//msg.topic=b;\n//return msg;\n//msg.topic = \"SELECT max(temperature) FROM data WHERE timestamp BETWEEN '\" + startDate + \" \" + startTime + \" 'AND '\" + endDate + \" \" + endTime + \"' ORDER BY timestamp limit 5000\";\n/*if (stday1 && enday1 &&\n    enday1 >= stday1) {\n        msg.topic = \"SELECT max(temperature) FROM data WHERE timestamp BETWEEN '\"+stday1+\"' AND '\"+enday1+\"' ORDER BY timestamp limit 5000\";\n        return msg;\n    } else {\n        node.warn(\"end date is before start date. or context not set\");\n    }*/\n   if (stday1 && enday1 &&\n    enday1 >= stday1) {\n        msg.topic = \"SELECT min(temperature) FROM data WHERE timestamp BETWEEN '\" + stdaystring + \"' AND '\" + endaystring + \"' ORDER BY timestamp limit 5000\";\n        return msg;\n    } else {\n        node.warn(\"end date is before 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<td>{{msg.payload[$index].TEMPERATURE}}</td> \n    <td>{{msg.payload[$index].HUMIDITY}}</td>\n\n  </tr>\n</table>\n</div>","storeOutMessages":true,"fwdInMessages":true,"resendOnRefresh":false,"templateScope":"local","x":800,"y":360,"wires":[["2f912045.b8a6d"]]},{"id":"49592d07.044c84","type":"sqlite","z":"ccb502ab.8b7c","mydb":"9f3c85e2.f9a5d8","sqlquery":"msg.topic","sql":"","name":"","x":480,"y":360,"wires":[["44bc105f.bcc9b"]]},{"id":"2f912045.b8a6d","type":"change","z":"ccb502ab.8b7c","name":"","rules":[{"t":"set","p":"mydata","pt":"flow","to":"payload","tot":"msg"}],"action":"","property":"","from":"","to":"","reg":false,"x":920,"y":420,"wires":[[]]},{"id":"4f381854.9114d8","type":"inject","z":"ccb502ab.8b7c","name":"","props":[{"p":"payload"},{"p":"topic","vt":"str"}],"repeat":"","crontab":"","once":true,"onceDelay":0.1,"topic":"","payload":"mydata","payloadType":"flow","x":650,"y":420,"wires":[["44bc105f.bcc9b"]]},{"id":"41422ca.76410d4","type":"ui_button","z":"ccb502ab.8b7c","name":"","group":"62112e23.8d599","order":1,"width":0,"height":0,"passthru":false,"label":"Click here","tooltip":"","color":"","bgcolor":"","icon":"","payload":"","payloadType":"date","topic":"SELECT * FROM DATA ORDER BY TIMESTAMP DESC LIMIT 100","topicType":"str","x":270,"y":420,"wires":[["49592d07.044c84"]]},{"id":"cf5a7640.485f38","type":"ui_group","name":"Sensors","tab":"e72a0b6e.b277a8","order":1,"disp":true,"width":"12","collapse":true},{"id":"9f3c85e2.f9a5d8","type":"sqlitedb","db":"C:\\sqlite\\newtest.db","mode":"RWC"},{"id":"d44d4f44.3219e8","type":"ui_group","name":"Sensors","tab":"34054411.bf9404","order":1,"disp":true,"width":"12","collapse":false},{"id":"62112e23.8d599","type":"ui_group","name":"Show Records","tab":"e72a0b6e.b277a8","order":2,"disp":true,"width":"6","collapse":true},{"id":"e72a0b6e.b277a8","type":"ui_tab","name":"Home","icon":"dashboard","disabled":false,"hidden":false},{"id":"34054411.bf9404","type":"ui_tab","name":"Home","icon":"dashboard","disabled":false,"hidden":false}]

Could anyone kindly guide me on this?

Thank you

[zenofmud]

Change yout tab to this:

<style>
.table
{
    height:400px;
    width:550px;
    background:lightblue;
}
</style>
<div class="table">
<table style="width:100%">
  <tr>
    <th>TIMESTAMP</th> 
    <th>SENSOR</th>
    <th>TEMPERATURE</th> 
    <th>HUMIDITY</th>
  
  </tr>
  <tr ng-repeat="x in msg.payload | limitTo:10">
    <td>{{x.TIMESTAMP}}</td>
    <td>{{x.SENSOR}}</td>
    <td>{{x.TEMPERATURE}}</td> 
    <td>{{x.HUMIDITY}}</td>

  </tr>
</table>
</div>

you also might want to move the table to the same group as the input group. You have creatd two 'Home' groups. edit the ui-table node and...

[Isuru]

Thanks. But still the issue prevails. I have used this function to retrieve data

var stday1 = global.get('stday') ||0 ;
var enday1 = global.get('enday') ||0 ;
if (stday1 && enday1 &&
    enday1 >= stday1) {
        msg.topic = "SELECT min(temperature) FROM data WHERE timestamp >  '"+stday1+"' ORDER BY timestamp";
        return msg;
    } else {
        node.warn("end date is before start date. or context not set");
    }

[zenofmud]

let me see your current flow

[Isuru]

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[zenofmud]

That is just the function, not the entire flow.

Also, what is your

desired result.

[Isuru]

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newmsg;\nnewmsg =  {\n    \"topic\" : \"SELECT max(humidity) from data WHERE timestamp between '\"+stday1+\"' AND '\"+enday1+\"'\"\n};\nreturn newmsg;*/\n//var b = \"SELECT max(TEMPERATURE) from data WHERE TIMESTAMP between \"+stday1+\" AND \"+enday1+\"\";\n//msg.topic=b;\n//return msg;\n//msg.topic = \"SELECT max(temperature) FROM data WHERE timestamp BETWEEN '\" + startDate + \" \" + startTime + \" 'AND '\" + endDate + \" \" + endTime + \"' ORDER BY timestamp limit 5000\";\n/*if (stday1 && enday1 &&\n    enday1 >= stday1) {\n        msg.topic = \"SELECT max(temperature) FROM data WHERE timestamp > '\"+stday1+\"' ORDER BY timestamp limit 5000\";\n        return msg;\n    } else {\n        node.warn(\"end date is before start date. or context not set\");\n    }*/\n    //correct version is shown below\n  if (stday1 && enday1 &&\n    enday1 >= stday1) {\n        msg.topic = \"SELECT min(temperature) FROM data WHERE timestamp >  '\"+stday1+\"' ORDER BY timestamp\";\n        return msg;\n  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Sorry for the inconvenience. For example, I want to enter start date as 10/02/2022 and get the minimum of temperature from the database where timestamp > 10/02/2022.

[zenofmud]

What are the values you have stored in the globals?

To help debug your issue, you can add 'node.warn()statements in yourfunction` nodes. Try adding

node.warn("stday1=")
node.warn(stday1)
node.warn("enday1=")
node.warn(enday1)
node.warn("stdaystring=")
node.warn(stdaystring)
node.warn("endaystring=")
node.warn(endaystring)
node.warn("a=")
node.warn(a)

after you set the variables so you can see what the are.

as an aside, you should use INTEGER inplace of INT