Wouldn't it be more expected at google? I didn't think they had a lot of traditional databases, so it's not a relevant skill for them. They've also got a fair few low level guys working in c and the like that I wouldn't expect to know much about sql.
yes, but we use SQL in our job daily, if only for validation, but also we write a lot of scripts for reporting, migration etc. It's pretty crucial for the job and we've turned away several candidates for not being strong enough in SQL/TSQL