Bruce Momjian <pgman@candle.pha.pa.us> writes:
> Uh, if we follow the shell rules, quote-star-quote means star has no
> special meaning:
Interesting analogy. We can't take it too far, because the shell quote
rules don't agree with SQL:
$ echo "aaa""zzz"
aaazzz
Under SQL rules the produced identifier would be aaa"zzz. Still, this
provides some ammunition for not processing wildcard characters that
are within quotes.
> $ echo \*
> *
That analogy says we need to accept both quote and backslash quoting.
Not sure about this. Again, SQL doesn't quite agree with the shell
about how these interact. For example:
egression=# select "foo\bar";
ERROR: Attribute "foo\bar" not found
regression=# \q
$ echo "foo\bar"
foar <--- \b went to backspace
So backslash isn't special within quotes according to SQL, but it
is according to the shell.
I still like "use the shell wildcards" as a rough design principle,
but the devil is in the details ...
regards, tom lane
