delta/postgresql.git/contrib/tsearch2/query_support.c, branch master

Replace the now-incompatible-with-core contrib/tsearch2 module with a

2007-11-13T21:02:29+00:00

compatibility package.  This supports importing dumps from past versions
using tsearch2, and provides the old names and API for most functions
that were changed.  (rewrite(ARRAY[...]) is a glaring omission, though.)

Pavel Stehule and Tom Lane

Silence Solaris compiler warnings, per buildfarm.

2007-07-15T22:49:36+00:00

Fix up several contrib modules that were using varlena datatypes in not-so-obvious

2007-02-28T22:44:38+00:00

ways.  I'm not totally sure that I caught everything, but at least now they pass
their regression tests with VARSIZE/SET_VARSIZE defined to reverse byte order.

Re-run pgindent, fixing a problem where comment lines after a blank

2005-11-22T18:17:34+00:00

comment line where output as too long, and update typedefs for /lib
directory.  Also fix case where identifiers were used as variable names
in the backend, but as typedefs in ecpg (favor the backend for
indenting).

Backpatch to 8.1.X.

Text parser rewritten:

2005-11-21T12:27:57+00:00

        - supports multibyte encodings
        - more strict rules for lexemes
        - flex isn't used
Add:
        - tsquery plainto_tsquery(text)
          Function makes tsquery from plain text.
        - &&, ||, !! operation for tsquery for combining
          tsquery from it's parts:  'foo & bar' || 'asd' => 'foo & bar | asd'

New features for tsearch2:

2005-11-08T17:08:46+00:00

1 Comparison operation for tsquery
2 Btree index on tsquery
3 numnode(tsquery) - returns 'length' of tsquery
4 tsquery @ tsquery, tsquery ~ tsquery - contains, contained for tsquery.
  Note: They don't gurantee exact result, only MAY BE, so it
  useful only for speed up rewrite functions
5 GiST index support for @,~
6 rewrite():
        select rewrite(orig, what, to);
        select rewrite(ARRAY[orig, what, to]) from tsquery_table;
        select rewrite(orig, 'select what, to from tsquery_table;');
7 significantly improve cover algorithm