postgres

Commit Graph

Author	SHA1	Message	Date
Robert Haas	cacbdd7810	Use appendStringInfoString instead of appendStringInfo where possible. This shaves a few cycles, and generally seems like good programming practice. David Rowley	12 years ago
Tom Lane	6f5b8beb64	Make contrib/pg_trgm also support regex searches with GiST indexes. This wasn't addressed in the original patch, but it doesn't take very much additional code to cover the case, so let's get it done. Since pg_trgm 1.1 hasn't been released yet, I just changed the definition of what's in it, rather than inventing a 1.2.	13 years ago
Tom Lane	3ccae48f44	Support indexing of regular-expression searches in contrib/pg_trgm. This works by extracting trigrams from the given regular expression, in generally the same spirit as the previously-existing support for LIKE searches, though of course the details are far more complicated. Currently, only GIN indexes are supported. We might be able to make it work with GiST indexes later. The implementation includes adding API functions to backend/regex/ to provide a view of the search NFA created from a regular expression. These functions are meant to be generic enough to be supportable in a standalone version of the regex library, should that ever happen. Alexander Korotkov, reviewed by Heikki Linnakangas and Tom Lane	13 years ago

Author

SHA1

Message

Date

Robert Haas

cacbdd7810

Use appendStringInfoString instead of appendStringInfo where possible.

This shaves a few cycles, and generally seems like good programming
practice.

David Rowley

12 years ago

Tom Lane

6f5b8beb64

Make contrib/pg_trgm also support regex searches with GiST indexes.

This wasn't addressed in the original patch, but it doesn't take very
much additional code to cover the case, so let's get it done.

Since pg_trgm 1.1 hasn't been released yet, I just changed the definition
of what's in it, rather than inventing a 1.2.

13 years ago

Tom Lane

3ccae48f44

Support indexing of regular-expression searches in contrib/pg_trgm.

This works by extracting trigrams from the given regular expression,
in generally the same spirit as the previously-existing support for
LIKE searches, though of course the details are far more complicated.

Currently, only GIN indexes are supported.  We might be able to make
it work with GiST indexes later.

The implementation includes adding API functions to backend/regex/
to provide a view of the search NFA created from a regular expression.
These functions are meant to be generic enough to be supportable in
a standalone version of the regex library, should that ever happen.

Alexander Korotkov, reviewed by Heikki Linnakangas and Tom Lane

13 years ago

3 Commits (c0764a542530c7ebf8abd2766d256d49d27e90e8)