Log Message:
-----------
Build tablename and COPY column list only at COPY time, not for each line
Modified Files:
--------------
pgloader/pgloader:
db.py (r1.20 -> r1.21)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pgloader/pgloader/pgloader/db.py.diff?r1=1.20&r2=1.21)