bash shell for multiple string into variables and bla..

gistfile1.txt

#!/bin/bash

export PATH=/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin

if [[ $ENGINE_CORE_CLICKHOUSE_USER != '' ]]; then
    CLARG="--host ${ENGINE_CORE_CLICKHOUSE_HOST} --port ${ENGINE_CORE_CLICKHOUSE_PORT} --user ${ENGINE_CORE_CLICKHOUSE_USER} --password ${ENGINE_CORE_CLICKHOUSE_PASSWORD}"
elif [[ $ENGINE_CORE_CLICKHOUSE_HOST != '' ]]; then
    CLARG="--host ${ENGINE_CORE_CLICKHOUSE_HOST} --port ${ENGINE_CORE_CLICKHOUSE_PORT}"
else
    CLARG="--host 127.0.0.1 --port 9000"
fi

read -r -d '' WISHTABLELIST << EOM
1#yazx_bizsec.tmp_table1
2#yazx_bizsec.tmp_table2 on cluster yazx_btdp_cluster
3#nobody.waht
EOM


echo "$WISHTABLELIST" | while IFS='#' read lc tn; do
    #echo $lc :::: $tn
    oldtime=`date -d "$lc day ago" +"%Y%m%d"`
    docker exec clickhouse touch '/data/clickhouse/flags/force_drop_table'
    docker exec clickhouse chmod 666 '/data/clickhouse/flags/force_drop_table'
    docker exec clickhouse clickhouse-client $CLARG --query="
    alter table ${tn} drop partition ${oldtime};
    "
done