Error: unexpected symbol in RScript - No further information provided about the line or syntax generating error - r

Question

I have read the many posts related to R Syntax errors, but everyone points to the error message and using it to figure out where the error occurs. My situation is different in that the error is generic. See below:
Error: unexpected symbol in "RScript correlation_presalesfinal3.R"
RStudio executes it fine.
It is an incredibly simple script, and I am wondering if it has to do with how I am constructing my Postgres syntax. Does R require line break symbols between the statements (select, from, group by etc)?
That is the only thing I can thing of. I am trying to compare a separate R-generated correlation to one generated by PostgreSQL directly. This particular piece is the call to PostgreSQL to calculate correlation directly.
I appreciate your help!
Here is the code:
#Written by Laura for Standard Imp
#Install if necessary (definitely on the first run)
install.packages("RColorBrewer")
install.packages("gplots")
install.packages("RSclient")
install.packages("RPostgreSQL")
#libraries in use
library(RColorBrewer)
library(gplots)
library(RSclient)
library(RPostgreSQL)
# Establish connection to PostgreSQL using RPostgreSQL
drv <- dbDriver("PostgreSQL")
# Full version of connection setting
con <- dbConnect(drv, dbname="db",host="ip",port=5432,user="user",password="pwd")
# -----------------------------^--------^-------------------^---- -------^
myLHSRHSFinalTable <- dbGetQuery(con,"select l1.a_lhsdescription as LHS, l2.a_rhsdescription as RHS, l7.a_scenariodescription as Scenario, corr(l3.driver_metric, l4.driver_metric) as Amount from schema_name.table_name l3 join schema_name.table_name l4 on L3.Time_ID = l4.Time_ID join schema_name.opera_00004_dim_lhs l1 on l3.LHS_ID = l1.member_id join schema_name.opera_00004_dim_rhs l2 on l4.RHS_ID = l2.member_id join schema_name.opera_00004_dim_scenario l7 on l3.scenario_id = l7.member_id join schema_name.opera_00004_dim_time l8 on l3.time_id = l8.member_id where l7.a_scenariodescription = 'Actual'
group by l1.a_lhsdescription , l2.a_rhsdescription, l7.a_scenariodescription ")
myLHSRHSFinalTable
write.csv(myLHSRHSFinalTable, file = "data_load_stats_final.csv")
# Close PostgreSQL connection
dbDisconnect(con)

Answer 1

Your description of the problem possibly lacks enough detail for people to answer, but in my situation I ran into this same error message because I was executing Rscript from within the R shell. The documentation in R isn't always clear, as neither is the help, for indicating to the user where the commands are to be executed.
If you're working from the 'terminal' you use Rscript to run an R script, whereas if you're working from within the 'R shell' you use source() to run an R script.
As I'm still a newbie, I'm sure this answer is too much of an oversimplification, but it works to solve the basic error I was getting.
My script file called output.R can be executed from the 'terminal' command line prompt ("$") within my Linux system by the command:
$Rscript output.R
Or alternatively from within R, by first running the R shell, then executing the command at the R prompt (">")
$R
>source("output.R")