[sql gen] Properly create UNIQUE index on non string column. Closes #13728492
Unique was previously detected in a loop triggered only for String columns.
#! /bin/sh -ecase "$1" in remove) if [ -x "/etc/init.d/cubicweb-ctl" ]; then invoke-rc.d cubicweb-ctl stop || true fi ;;esac#DEBHELPER#exit 0