How to install mssql-server in Ubuntu 19.04?
I based my answer on this one for 18.10. Install these packages:
libssl1.0.0_1.0.1t-1+deb8u11_amd64.deb and libjemalloc1_3.6.0-11_amd64.deb
with the commands:
sudo dpkg -i libssl1.0.0_1.0.1t-1+deb8u11_amd64.deb
sudo dpkg -i libjemalloc1_3.6.0-11_amd64.deb