Dears,
I successfully used the below commands and the string, that has comma "," within it, is quoted by double quotes; I need please to use single quotes so the result will be '2,3' not "2,3".
$export HADOOP_CLIENT_OPTS="-Ddisable.quoting.for.sv=false"
$ beeline -u 'jdbc:hive2://localhost:10000/' --outputformat=csv2 -e "select 1 as a, '2,3' as b"
a , b
1 , "2,3"
regards,
Omran Badarneh