changes.tcl

sqlite-3.4.1,嵌入式数据库.是一个功能强大的开源数据库,给学习和研发以及小型公司的发展带来了全所未有的好处.

    and reduce the library footprint.</li>
<li>The REINDEX command was added.</li>
<li>The engine no longer consults the main table if it can get
    all the information it needs from an index.</li>
<li>Many nuisance bugs fixed.</li>
}

chng {2004 October 11 (3.0.8)} {
<li>Add support for DEFERRED, IMMEDIATE, and EXCLUSIVE transactions.</li>
<li>Allow new user-defined functions to be created when there are
already one or more precompiled SQL statements.<li>
<li>Fix portability problems for Mingw/MSYS.</li>
<li>Fix a byte alignment problem on 64-bit Sparc machines.</li>
<li>Fix the ".import" command of the shell so that it ignores \r
characters at the end of lines.</li>
<li>The "csv" mode option in the shell puts strings inside double-quotes.</li>
<li>Fix typos in documentation.</li>
<li>Convert array constants in the code to have type "const".</li>
<li>Numerous code optimizations, specially optimizations designed to
make the code footprint smaller.</li>
}

chng {2004 September 18 (3.0.7)} {
<li>The BTree module allocates large buffers using malloc() instead of
    off of the stack, in order to play better on machines with limited
    stack space.</li>
<li>Fixed naming conflicts so that versions 2.8 and 3.0 can be
    linked and used together in the same ANSI-C source file.</li>
<li>New interface: sqlite3_bind_parameter_index()</li>
<li>Add support for wildcard parameters of the form: "?nnn"</li>
<li>Fix problems found on 64-bit systems.</li>
<li>Removed encode.c file (containing unused routines) from the 
    version 3.0 source tree.</li>
<li>The sqlite3_trace() callbacks occur before each statement
    is executed, not when the statement is compiled.</li>
<li>Makefile updates and miscellaneous bug fixes.</li>
}

chng {2004 September 02 (3.0.6 beta)} {
<li>Better detection and handling of corrupt database files.</li>
<li>The sqlite3_step() interface returns SQLITE_BUSY if it is unable
    to commit a change because of a lock</li>
<li>Combine the implementations of LIKE and GLOB into a single
    pattern-matching subroutine.</li>
<li>Miscellaneous code size optimizations and bug fixes</li>
}

chng {2004 August 29 (3.0.5 beta)} {
<li>Support for ":AAA" style bind parameter names.</li>
<li>Added the new sqlite3_bind_parameter_name() interface.</li>
<li>Support for TCL variable names embedded in SQL statements in the
    TCL bindings.</li>
<li>The TCL bindings transfer data without necessarily doing a conversion
    to a string.</li>
<li>The database for TEMP tables is not created until it is needed.</li>
<li>Add the ability to specify an alternative temporary file directory
    using the "sqlite_temp_directory" global variable.</li>
<li>A compile-time option (SQLITE_BUSY_RESERVED_LOCK) causes the busy
    handler to be called when there is contention for a RESERVED lock.</li>
<li>Various bug fixes and optimizations</li>
}

chng {2004 August 8 (3.0.4 beta)} {
<li>CREATE TABLE and DROP TABLE now work correctly as prepared statements.</li>
<li>Fix a bug in VACUUM and UNIQUE indices.</li>
<li>Add the ".import" command to the command-line shell.</li>
<li>Fix a bug that could cause index corruption when an attempt to
    delete rows of a table is blocked by a pending query.</li>
<li>Library size optimizations.</li>
<li>Other minor bug fixes.</li>
}

chng {2004 July 22 (2.8.15)} {
<li>This is a maintenance release only.  Various minor bugs have been
fixed and some portability enhancements are added.</li>
}

chng {2004 July 22 (3.0.3 beta)} {
<li>The second beta release for SQLite 3.0.</li>
<li>Add support for "PRAGMA page_size" to adjust the page size of
the database.</li>
<li>Various bug fixes and documentation updates.</li>
}

chng {2004 June 30 (3.0.2 beta)} {
<li>The first beta release for SQLite 3.0.</li>
}

chng {2004 June 22 (3.0.1 alpha)} {
<li><font color="red"><b>
    *** Alpha Release - Research And Testing Use Only ***</b></font>
<li>Lots of bug fixes.</li>
}

chng {2004 June 18 (3.0.0 alpha)} {
<li><font color="red"><b>
    *** Alpha Release - Research And Testing Use Only ***</b></font>
<li>Support for internationalization including UTF-8, UTF-16, and
    user defined collating sequences.</li>
<li>New file format that is 25% to 35% smaller for typical use.</li>
<li>Improved concurrency.</li>
<li>Atomic commits for ATTACHed databases.</li>
<li>Remove cruft from the APIs.</li>
<li>BLOB support.</li>
<li>64-bit rowids.</li>
<li><a href="version3.html">More information</a>.
}

chng {2004 June 9 (2.8.14)} {
<li>Fix the min() and max() optimizer so that it works when the FROM
    clause consists of a subquery.</li>
<li>Ignore extra whitespace at the end of of "." commands in the shell.</li>
<li>Bundle sqlite_encode_binary() and sqlite_decode_binary() with the 
    library.</li>
<li>The TEMP_STORE and DEFAULT_TEMP_STORE pragmas now work.</li>
<li>Code changes to compile cleanly using OpenWatcom.</li>
<li>Fix VDBE stack overflow problems with INSTEAD OF triggers and
    NULLs in IN operators.</li>
<li>Add the global variable sqlite_temp_directory which if set defines the
    directory in which temporary files are stored.</li>
<li>sqlite_interrupt() plays well with VACUUM.</li>
<li>Other minor bug fixes.</li>
}

chng {2004 March 8 (2.8.13)} {
<li>Refactor parts of the code in order to make the code footprint
    smaller.  The code is now also a little bit faster.</li>
<li>sqlite_exec() is now implemented as a wrapper around sqlite_compile()
    and sqlite_step().</li>
<li>The built-in min() and max() functions now honor the difference between
    NUMERIC and TEXT datatypes.  Formerly, min() and max() always assumed
    their arguments were of type NUMERIC.</li>
<li>New HH:MM:SS modifier to the built-in date/time functions.</li>
<li>Experimental sqlite_last_statement_changes() API added.  Fixed the
    the last_insert_rowid() function so that it works correctly with
    triggers.</li>
<li>Add functions prototypes for the database encryption API.</li>
<li>Fix several nuisance bugs.</li>
}

chng {2004 February 8 (2.8.12)} {
<li>Fix a bug that will might corrupt the rollback journal if a power failure
    or external program halt occurs in the middle of a COMMIT.  The corrupt
    journal can lead to database corruption when it is rolled back.</li>
<li>Reduce the size and increase the speed of various modules, especially
    the virtual machine.</li>
<li>Allow "&lt;expr&gt; IN &lt;table&gt;" as a shorthand for
    "&lt;expr&gt; IN (SELECT * FROM &lt;table&gt;".</li>
<li>Optimizations to the sqlite_mprintf() routine.</li>
<li>Make sure the MIN() and MAX() optimizations work within subqueries.</li>
}

chng {2004 January 14 (2.8.11)} {
<li>Fix a bug in how the IN operator handles NULLs in subqueries.  The bug
    was introduced by the previous release.</li>
}

chng {2004 January 13 (2.8.10)} {
<li>Fix a potential database corruption problem on Unix caused by the fact
    that all posix advisory locks are cleared whenever you close() a file.
    The work around it to embargo all close() calls while locks are 
    outstanding.</li>
<li>Performance enhancements on some corner cases of COUNT(*).</li>
<li>Make sure the in-memory backend response sanely if malloc() fails.</li>
<li>Allow sqlite_exec() to be called from within user-defined SQL
    functions.</li>
<li>Improved accuracy of floating-point conversions using "long double".</li>
<li>Bug fixes in the experimental date/time functions.</li>
}

chng {2004 January 5 (2.8.9)} {
<li>Fix a 32-bit integer overflow problem that could result in corrupt
    indices in a database if large negative numbers (less than -2147483648)
    were inserted into a indexed numeric column.</li>
<li>Fix a locking problem on multi-threaded Linux implementations.</li>
<li>Always use "." instead of "," as the decimal point even if the locale
    requests ",".</li>
<li>Added UTC to localtime conversions to the experimental date/time
    functions.</li>
<li>Bug fixes to date/time functions.</li>
}

chng {2003 December 17 (2.8.8)} {
<li>Fix a critical bug introduced into 2.8.0 which could cause
    database corruption.</li>
<li>Fix a problem with 3-way joins that do not use indices</li>
<li>The VACUUM command now works with the non-callback API</li>
<li>Improvements to the "PRAGMA integrity_check" command</li>
}

chng {2003 December 4 (2.8.7)} {
<li>Added experimental sqlite_bind() and sqlite_reset() APIs.</li>
<li>If the name of the database is an empty string, open a new database
    in a temporary file that is automatically deleted when the database
    is closed.</li>
<li>Performance enhancements in the lemon-generated parser</li>
<li>Experimental date/time functions revised.</li>
<li>Disallow temporary indices on permanent tables.</li>
<li>Documentation updates and typo fixes</li>
<li>Added experimental sqlite_progress_handler() callback API</li>
<li>Removed support for the Oracle8 outer join syntax.</li>
<li>Allow GLOB and LIKE operators to work as functions.</li>
<li>Other minor documentation and makefile changes and bug fixes.</li>
}

chng {2003 August 21 (2.8.6)} {
<li>Moved the CVS repository to www.sqlite.org</li>
<li>Update the NULL-handling documentation.</li>
<li>Experimental date/time functions added.</li>
<li>Bug fix: correctly evaluate a view of a view without segfaulting.</li>
<li>Bug fix: prevent database corruption if you dropped a
    trigger that had the same name as a table.</li>
<li>Bug fix: allow a VACUUM (without segfaulting) on an empty
    database after setting the EMPTY_RESULT_CALLBACKS pragma.</li>
<li>Bug fix: if an integer value will not fit in a 32-bit int, store it in
    a double instead.</li>
<li>Bug fix: Make sure the journal file directory entry is committed to disk
    before writing the database file.</li>
}

chng {2003 July 22 (2.8.5)} {
<li>Make LIMIT work on a compound SELECT statement.</li>
<li>LIMIT 0 now shows no rows.  Use LIMIT -1 to see all rows.</li>
<li>Correctly handle comparisons between an INTEGER PRIMARY KEY and
    a floating point number.</li>
<li>Fix several important bugs in the new ATTACH and DETACH commands.</li>
<li>Updated the <a href="nulls.html">NULL-handling document</a>.</li> 
<li>Allow NULL arguments in sqlite_compile() and sqlite_step().</li>
<li>Many minor bug fixes</li>
}

chng {2003 June 29 (2.8.4)} {
<li>Enhanced the "PRAGMA integrity_check" command to verify indices.</li>
<li>Added authorization hooks for the new ATTACH and DETACH commands.</li>
<li>Many documentation updates</li>
<li>Many minor bug fixes</li>
}

chng {2003 June 4 (2.8.3)} {
<li>Fix a problem that will corrupt the indices on a table if you
    do an INSERT OR REPLACE or an UPDATE OR REPLACE on a table that
    contains an INTEGER PRIMARY KEY plus one or more indices.</li>
<li>Fix a bug in windows locking code so that locks work correctly
    when simultaneously accessed by Win95 and WinNT systems.</li>
<li>Add the ability for INSERT and UPDATE statements to refer to the
    "rowid" (or "_rowid_" or "oid") columns.</li>
<li>Other important bug fixes</li>
}

chng {2003 May 17 (2.8.2)} {
<li>Fix a problem that will corrupt the database file if you drop a
    table from the main database that has a TEMP index.</li>
}

chng {2003 May 16 (2.8.1)} {
<li>Reactivated the VACUUM command that reclaims unused disk space in 
    a database file.</li>
<li>Added the ATTACH and DETACH commands to allow interacting with multiple
    database files at the same time.</li>
<li>Added support for TEMP triggers and indices.</li>
<li>Added support for in-memory databases.</li>
<li>Removed the experimental sqlite_open_aux_file().  Its function is
    subsumed in the new ATTACH command.</li>
<li>The precedence order for ON CONFLICT clauses was changed so that
    ON CONFLICT clauses on BEGIN statements have a higher precedence than
    ON CONFLICT clauses on constraints.
<li>Many, many bug fixes and compatibility enhancements.</li>
}

chng {2003 Feb 16 (2.8.0)} {
<li>Modified the journal file format to make it more resistant to corruption
    that can occur after an OS crash or power failure.</li>
<li>Added a new C/C++ API that does not use callback for returning data.</li>
}

chng {2003 Jan 25 (2.7.6)} {
<li>Performance improvements.  The library is now much faster.</li>
<li>Added the <b>sqlite_set_authorizer()</b> API.  Formal documentation has
    not been written - see the source code comments for instructions on
    how to use this function.</li>
<li>Fix a bug in the GLOB operator that was preventing it from working
    with upper-case letters.</li>
<li>Various minor bug fixes.</li>
}

chng {2002 Dec 27 (2.7.5)} {
<li>Fix an uninitialized variable in pager.c which could (with a probability
    of about 1 in 4 billion) result in a corrupted database.</li>
}

chng {2002 Dec 17 (2.7.4)} {
<li>Database files can now grow to be up to 2^41 bytes.  The old limit
    was 2^31 bytes.</li>
<li>The optimizer will now scan tables in the reverse if doing so will
    satisfy an ORDER BY ... DESC clause.</li>
<li>The full pathname of the database file is now remembered even if
    a relative path is passed into sqlite_open().  This allows 
    the library to continue operating correctly after a chdir().</li>
<li>Speed improvements in the VDBE.</li>
<li>Lots of little bug fixes.</li>