#!/bin/bash

err()
{   
    echo ERROR: $*
    exit 1
}

usage()
{   
    err "usage: $0 <[m|p|o|i|s]>"
}

[ 1 != $# ] && usage
ESC_STR_CONST=
db=

case $1 in
    m)  db=mysql
        ;;
    p)  db=postgresql
        ESC_STR_CONST="E"
        ;;
    *)  usage
        ;;
esac

lines=(
    "INSERT INTO items VALUES (21883,0,10044,__ESC_STR_CONST__'SQL: % Processor Time','perf_counter[\"\\Process(sqlservr#1)\\% Processor Time\"]',60)"
    "UPDATE items SET foo = __ESC_STR_CONST__'perf_counter[\"\\Process(sqlservr#1)\\% Processor Time\"]' WHERE bar = 'baz'"
)

i=0
while [ "${lines[$i]}" ]; do
    s=$(echo ${lines[$i]} | sed "s/__ESC_STR_CONST__/$ESC_STR_CONST/g")
    case $db in
        mysql)
            echo -n "$db "
            ;;
        postgresql)
            echo -n "$db "
            ;;
        *)  
            err "invalid db"
            ;;
    esac
    echo "[$i] $s"
    ((i++))
done