Write Query to Compare time in google fusion table

问题

I want to get all the entries from google fusion table which satisfies the condition in a given date Time column > specific time

https://www.googleapis.com/fusiontables/v2/query?sql=SELECT * FROM 1WjowbI77j1WFcn3IEtbwBymhVZh8jfmP_dg1epd9 WHERE Date = '2015-02-23' AND Time > '10:25:04'&key=AIzaSyCALoSz00ZY3zTL1D_xUTD9GMb3T1ocBdU

But it gives me all the entries as result..

fusion table :

https://www.google.com/fusiontables/data?docid=1WjowbI77j1WFcn3IEtbwBymhVZh8jfmP_dg1epd9&key=AIzaSyCALoSz00ZY3zTL1D_xUTD9GMb3T1ocBdU#rows:id=1

回答1:

It is assumed that the type of Time column is Date/Time and format is H:mm:ss AM/PM

In that case, it seems the filtering on Date/Time column is not supported.

According to Row and Query SQL Reference documentation:

Filtering on DATETIME

When filtering on a column of type DATETIME, the <value> should be formatted as one of the following supported formats:
MMM dd, yy
MM/dd/yy
MM-dd-yy
MMM-dd-yy
yyyy.MM.dd
dd-MMM-yy
MMM/yy
MMM yy
dd/MMM/yy
yyyy

Having said that, you could consider to apply filtering to the returned results as demonstrates the following JavaScript example:

var key = 'AIzaSyCALoSz00ZY3zTL1D_xUTD9GMb3T1ocBdU'
var sql = "SELECT * FROM 1WjowbI77j1WFcn3IEtbwBymhVZh8jfmP_dg1epd9 WHERE Date = '2015-02-23'";
var requestUrl = "https://www.googleapis.com/fusiontables/v2/query?sql=" + sql +  "&key=" + key;
var timeKey = '10:25:04';
$.getJSON(requestUrl, function(data) {
    var filteredRows = data.rows.filter(function(row){
        var dtCur = Date.parse(row[3] + ' ' + row[7]);
        var dtKey = Date.parse(row[3] + ' ' + timeKey);  
        if (dtCur > dtKey) {
            return row;
        }    
    });
    
    //print
    var output = JSON.stringify(filteredRows, null, 2);
    $("#output").text(output);
});

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<pre style="background-color: #c0c0c0" id="output"></pre>

回答2:

I can't tell you exactly what's going on there, the only issue I see that you've omited the AM(PM)

The documentation mentions the DateTime-Formats supported for filtering, but I think this part of the documentation is outdated(see: Date query with the current date between two date_time columns ).

For me it works as expected when I make a copy of the table(you may do the same):

https://www.googleapis.com/fusiontables/v2/query?sql=SELECT * FROM 12tl0d4jZRkhPD9ZdBzP2QzK4TyEu-U_Dnn8kimft WHERE Date = '2015-02-23' AND Time > '10:25:04 AM'&key=yourKey

Maybe they run a validation when a table will be copied and store DateTime-columns internally in another format.

来源：https://stackoverflow.com/questions/30686780/write-query-to-compare-time-in-google-fusion-table

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sql

google-fusion-tables