Postgres and MySQL Rosetta stone??

I am reading through HeadFirst SQL (an OReilly book) which uses
specific MySQLisms in its examples. I use postgres on our databases.
Some examples are easy to work around, some are not .

Is there a rosetta stone (table of commands in one and equivalents
inthe other) available?

In particular, MySQl seems to have richer string functions to parse
out sub strings and als trim a string for automatic table insertion
from long multifield strings.

Thanks.