How to reference function in Node.js Postgres API Call - sql

Question

I have this function called pvt():
Create Or Replace Function pvt()
RETURNS void
LANGUAGE 'plpgsql'
AS '
declare
sqlColumn varchar;
qr varchar;
columnlist varchar;
Begin
sqlColumn= ''select distinct D.sys_cat from (select Row_Number() Over (Partition By Project,Date_ Order By System_) as sys_cat From your_table) D order by D.sys_cat;'';
qr=''prepare pvtstmt as Select D.Project,D.Date_,'';
For columnlist In EXECUTE sqlColumn
Loop
qr=qr || ''
Max(Case When sys_cat=''|| chr(39) || columnlist || chr(39) ||'' Then System_ ||'' ||chr(39)||''-''||chr(39)||''|| Result_ Else '' ||chr(39)||chr(39)||'' End) As System'' || columnlist || '' , '';
END LOOP;
qr=substr(qr, 0, length(qr) - 1);
qr=qr || ''From
(select *, Row_Number() Over (Partition By Project,Date_ Order By System_) as sys_cat From your_table) D Where D.Project='' || chr(39) || ''Proj1'' || chr(39) || ''Group By D.Project,D.Date_ Order By D.Project,D.Date_'';
Deallocate All;
EXECUTE qr;
End;
'
I need to execute these SQL statements:
Select pvt();
Execute pvtstmt;
Currently, I have a queries.js file where I have defined:
const getRunsByProjectTable = `
Select pvt();
Execute pvtstmt;
`
However, when I try to make the API call I do not receive any data back:
const getRunsByProjectTable = (req, res) => {
pool.query(queries.getRunsByProjectTable, (error, results) => {
if (error) throw error;
res.status(200).json(results.rows);
})
}
Does anyone know what the issue may be? Any help would be much appreciated!