#!/bin/bash
InsertIfUnset() {
#InsertIfUnset table [no_id] < key value \n key value
	local			\
		table="$1"	\
		no_id="${2:-0}"	\
		column		\
		key		\
		keys		\
		results		\
		value		\
		values
	while read key value
	do
		keys+=( "$key" )
		values+=( "$value" )
	done
	if (( no_id ))
	then
		column="${keys[0]}"
	else
		column='id'
	fi
	if ! results=$(
		Select "$table" "$column" < <(
			for key in ${!keys[@]}
			do
				echo "${keys[$key]}" = "${values[$key]}"
			done
		)
	)
	then
		results=$(
			Insert "$table" < <(
				for key in ${!keys[@]}
				do
					echo "${keys[$key]}" "${values[$key]}"
				done
			)
		)
	fi
	echo "$results"
}