mirror of
https://git.postgresql.org/git/postgresql.git
synced 2024-08-18 18:13:25 +02:00
When reading from a text- or CSV-format file in file_fdw, the datatype input routines can consume a significant fraction of the runtime. Often, the query does not need all the columns, so we can get a useful speed boost by skipping I/O conversion for unnecessary columns. To support this, add a "convert_selectively" option to the core COPY code. This is undocumented and not accessible from SQL (for now, anyway). Etsuro Fujita, reviewed by KaiGai Kohei |
||
---|---|---|
.. | ||
data | ||
expected | ||
input | ||
output | ||
sql | ||
.gitignore | ||
file_fdw--1.0.sql | ||
file_fdw.c | ||
file_fdw.control | ||
Makefile |