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Add a new full-text search variant that tracks the total number of documents

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and document sizes, to make ranking search results easier.  Currently
called FTS4.

FossilOrigin-Name: 1b6e6094c88214e02c9e3638932997ac20bfe413
This commit is contained in:
drh
2010-02-03 19:55:13 +00:00
parent 0ae0bfd486
commit b4a1fed2ea
8 changed files with 2118 additions and 128 deletions
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9
src/sqliteInt.h
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@@ -2423,6 +2423,15 @@ int sqlite3WalkSelectFrom(Walker*, Select*);
# define SQLITE_CORRUPT_BKPT SQLITE_CORRUPT
#endif
/*
** FTS4 is really an extension for FTS3. It is enabled using the
** SQLITE_ENABLE_FTS3 macro. But to avoid confusion we also all
** the SQLITE_ENABLE_FTS4 macro to serve as an alisse for SQLITE_ENABLE_FTS3.
*/
#if defined(SQLITE_ENABLE_FTS4) && !defined(SQLITE_ENABLE_FTS3)
# define SQLITE_ENABLE_FTS3
#endif
/*
** The ctype.h header is needed for non-ASCII systems. It is also
** needed by FTS3 when FTS3 is included in the amalgamation.