Tweak the backend scanner (and psqlscan.l, which must track the backend
Tom Lane <tgl@sss.pgh.pa.us>
Tweak the backend scanner (and psqlscan.l, which must track the backend scanner anyway) to avoid having any backup states. According to the flex manual, this should speed things up, and indeed the backend scanner is about a third faster according to some quick profiling checks. I haven't tried to measure the speed change in psql, but it probably is similar.
Files
| Path | Change | +/− |
|---|---|---|
| src/backend/parser/scan.l | modified | +85 −22 |
| src/bin/psql/psqlscan.l | modified | +76 −19 |