Implemented a "fast" string BAT append: Under certain conditions, instead of inserting values one-by-one, we now concatenate the string heap wholesale and just manipulate the offsets. This works both for BATins and BATappend.
Implemented a "fast" string BAT append:
Under certain conditions, instead of inserting values one-by-one, we
now concatenate the string heap wholesale and just manipulate the
offsets.
This works both for BATins and BATappend.

zyzyis/monetdb,zyzyis/monetdb,zyzyis/monetdb,zyzyis/monetdb,zyzyis/monetdb,zyzyis/monetdb,zyzyis/monetdb,zyzyis/monetdb,zyzyis/monetdb,zyzyis/monetdb