SQL обновление top1 строки запроса

rvm pkg install openssl && rvm pkg install zlib && rvm pkg install libyaml &&
  rvm pkg install iconv
rvm install 1.9.3-p0 --with-opt-dir=$HOME/.rvm/usr \
  --with-libxml2-dir=/usr/local/Cellar/libxml2/2.7.8 \
  --with-readline-dir=/usr/local/Cellar/readline/6.2.1