Query data from Hana database with R, dealing with quotes - sql

Question

I use R to read data from a Hana database. Some of the table names include backslashes, which forces me to use quotation marks. I cannot read these tables using R. Let me show you an example ...
This SQL works in Hana:
SELECT COUNT(*) FROM P3O."/BBB/BBB";
When I try to use the same code to read the data with R from the Hana database I get these errors:
library("RODBC")
channel <- odbcConnect("xxx",uid="xxx",pwd="xxx")
query <-
paste("'","SELECT COUNT(*) FROM P30.", "\"/BBB/BBB\"","'",sep="")
RAW_dataHana <- sqlQuery(channel, query)
close(channel)
I get following errors:
Syntax error or access violation;257 sql syntax error: incorrect
syntax near \"SELECT COUNT() FROM ... [2] "[RODBC] ERROR: Could not
SQLExecDirect ''SELECT COUNT() FROM P30.\"/BBB/BBB\"''"
I think it has something to do with the quotation, but when I check the code with this, I think I get the correct query:
x = paste("'","SELECT COUNT(*) FROM P30.", "\"/BBB/BBB\"", "'",sep="")
cat(x)
> cat(x)
'SELECT COUNT(*) FROM P30."/BBB/BBB"'

Answer 1

Just got now to check my RODBC test code...
The easiest way to handle the quoting is to enclose the query string in single quotes, e.g.:
sales_fact<-sqlQuery (ch, 'SELECT TOP 200 "ORDERID", "VAR_INDICATOR",
sum("ORDER_CNT") AS "ORDER_CNT",
sum("VARIANCE") AS "VARIANCE",
sum("VARIANCE_PCT") AS "VARIANCE_PCT",
sum("BUDGET") AS "BUDGET",
sum("ACTUAL") AS "ACTUAL"
FROM "_SYS_BIC"."test/ODERS_CV"
GROUP BY "ORDERID", "VAR_INDICATOR"')
This also works with paste():
queryText <- 'SELECT TOP 200 "ORDERID", "VAR_INDICATOR",
sum("ORDER_CNT") AS "ORDER_CNT",...'
queryText <- paste(sep = '', queryText, ' "_SYS_BIC"."test/ODERS_CV"
GROUP BY "ORDERID", "VAR_INDICATOR"')