HQL Queries rounds off numbers - grails

Question

I have built a grails application and am using HQL in my controller to pass parameters to my "index.gsp" using g-select tags. There is a very simple issue I am facing, when the value comes to the front-end (browser/client side), the numbers are rounded off.
I was not facing this before while using SQL in my controller, but now since my index.gsp and controller are communicating using "params" and g select, HQL had to be used and this rounds off all numbers (basic metrics, calculated metrics etc)
Query example (controller) :
In this query, I am taking revenue, it's YoY and WoW from my backend table and even this is rounded off ( all values shown in visualization)
def com = Com.executeQuery("
SELECT p.date_hour
,p.total_revenue
,CASE
WHEN total_revenue_ly IN (
0
,NULL
)
THEN 0
ELSE ((total_revenue / total_revenue_ly - 1) * 100)
END AS yoy
,CASE
WHEN total_revenue_lw IN (
0
,NULL
)
THEN 0
ELSE ((total_revenue / total_revenue_lw - 1) * 100)
END AS wow
FROM Com p
WHERE p.department = ?
AND p.device = ?
AND p.browser = ?
AND p.platform = ?
AND p.mv = ?
AND p.time_period = ?
ORDER BY col_0_0_ ASC",
[params.department, params.device, params.browser,
params.platform, params.mv, params.time_period])
render com as JSON
I also have to write queries for "conversion rate" etc(calculated metrics) :
def com = Tablev1.executeQuery("
SELECT p.date_hour
,CASE
WHEN visits IN ((0,NULL)
THEN 0
ELSE ((p.orders / p.visits) * 100)
END AS metric
,CASE
WHEN visits IN ((0,NULL)
THEN 0
WHEN orders_ly IN ((0,NULL)
THEN 0
WHEN visits_ly IN ((0,NULL)
THEN 0
ELSE ((((orders / visits) / (orders_ly / visits_ly)) - 1) * 100)
END AS yoy
,CASE
WHEN visits IN ((0,NULL)
THEN 0
WHEN orders_lw IN ((0,NULL)
THEN 0
WHEN visits_lw IN ((0,NULL)
THEN 0
ELSE ((((orders / visits) / (orders_lw / visits_lw)) - 1) * 100)
END AS wow
FROM Tablev1 p
WHERE p.platform = ?
AND p.mv = ?
AND p.time_period = ?
ORDER BY col_0_0_ ASC",
[params.platform, params.mv, params.time_period])
render com as JSON
Even these values are rounded off. I am displaying the values in the console of browser and in the array only they are rounded off, my visualization is a graph using highcharts.js but I don't think there is an issue with highcharts.js as the array feeded to highcharts is only rounded off.
The data type of revenue in first query was also float, but still it's rounded off.
The problem lies in HQL or index-controller communication
In a different application, using case when rounds off numbers and not using case when displays the decimals, I don't understand this. Can someone pls explain it?
How do I resolve this issue?
Any approches/suggestions are most welcome.
UPDATE:
Ignore the entire case when, a simple query like this also is passing rounded values
def com = Com.executeQuery("
SELECT p.date_hour
,p.total_revenue
FROM Com p
WHERE p.department = ?
AND p.device = ?
AND p.browser = ?
AND p.platform = ?
AND p.mv = ?
AND p.time_period = ?
ORDER BY col_0_0_ ASC",
[params.department, params.device, params.browser,
params.platform, params.mv, params.time_period])
render com as JSON

Answer 1

Try using a float value when multiplying:
... ELSE ((total_revenue / total_revenue_ly - 1) * 100.0)