On 09.03.2012 02:22, Nico Williams wrote:
On Thu, Mar 8, 2012 at 5:57 PM, Alek Paunov<a...@declera.com> wrote:
Let suppose hypothetical function:
asm(sql): returns VDBE assembler code for the sql parameter (like 'explain'
but with full instruction attributes)
I am curious, Is it evaluable (to proper VDBE code):
asm(update with complex join)
as Transformation(
asm(select with the same join),
asm(same update without join)
)
?
What the "internals" gurus think? :-)
It most definitely is. (I'm not a SQLite3 internals guru, but I've
played enough with the internals to believe that I can make that
assertion with high confidence. I could be wrong however. Caveat
emptor.)
So maybe it's worth to give it a try ... Is there someone else, which is
interested to work on VDBE dump/load to assembler representation? Once
these base tools are available, maybe other people would reuse bytecode
instrumentation for other purposes also ;-)
_______________________________________________
sqlite-users mailing list
sqlite-users@sqlite.org
http://sqlite.org:8080/cgi-bin/mailman/listinfo/sqlite-users
