Tom Lane a36088bcfa Skip text->binary conversion of unnecessary columns in contrib/file_fdw. ...

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

2012-07-12 16:26:59 -04:00

..

data

Add FORCE_NOT_NULL support to the file_fdw foreign data wrapper.

2011-09-16 16:35:51 -04:00

expected

Add contrib/file_fdw foreign-data wrapper for reading files via COPY.

2011-02-20 14:06:59 -05:00

input

Add FORCE_NOT_NULL support to the file_fdw foreign data wrapper.

2011-09-16 16:35:51 -04:00

output

file_fdw: Improve error message

2012-05-17 20:20:33 +03:00

sql

Add contrib/file_fdw foreign-data wrapper for reading files via COPY.

2011-02-20 14:06:59 -05:00

.gitignore

Support "make check" in contrib

2011-04-25 22:27:11 +03:00

file_fdw--1.0.sql

Throw a useful error message if an extension script file is fed to psql.

2011-10-12 15:45:03 -04:00

file_fdw.c

Skip text->binary conversion of unnecessary columns in contrib/file_fdw.

2012-07-12 16:26:59 -04:00

file_fdw.control

Add contrib/file_fdw foreign-data wrapper for reading files via COPY.

2011-02-20 14:06:59 -05:00

Makefile

Add contrib/file_fdw foreign-data wrapper for reading files via COPY.

2011-02-20 14:06:59 -05:00