mingge_bash.sh

sub() {
    to_replace=""
    for var in "$@"
        do
        if [ -z "$to_replace" ]
        then
            to_replace=$var
        else
            RAW_STR=$(echo $RAW_STR | sed "s/${to_replace}/${var}/g")
            to_replace=""
        fi
    done
    echo "${RAW_STR}"
}

QUERY PLAN -------------------------------------- Seq Scan on public.rt1 Output: a  Endpoint: on segments: contentid [SEGIDX] Optimizer: Postgres query       optimizer (4 rows)
 QUERY PLAN
--------------------------------------
 Seq Scan on public.rt1
   Output: a
 Endpoint: on segments: contentid [0]
 Optimizer: Postgres query optimizer
(4 rows)