Slave queries doesn't run on 5.7

slave_status() {
   local outfile=$1
   local mysql_version=$2

   if [ "${mysql_version}" '<' "5.7" ]; then
      local sql="SHOW SLAVE STATUS\G"  
      echo -e "\n$sql\n" >> $outfile
      $CMD_MYSQL $EXT_ARGV -e "$sql" >> $outfile
   else
      local sql="SELECT * FROM performance_schema.replication_connection_configuration JOIN performance_schema.replication_applier_configuration USING(channel_name)\G"
      echo -e "\n$sql\n" >> $outfile
      $CMD_MYSQL $EXT_ARGV -e "$sql" >> $outfile

      sql="SELECT * FROM replication_connection_status\G"
      echo -e "\n$sql\n" >> $outfile
      $CMD_MYSQL $EXT_ARGV -e "$sql" >> $outfile

      sql="SELECT * FROM replication_applier_status JOIN replication_applier_status_by_coordinator USING(channel_name)\G"
      echo -e "\n$sql\n" >> $outfile
      $CMD_MYSQL $EXT_ARGV -e "$sql" >> $outfile
   fi

}