[no description] https://git.osdyson.ru/mirror/pkgsrc/atom?h=pkgsrc-2016Q3 2016-09-13T10:48:24Z 2016-09-13T10:48:24Z adam adam@pkgsrc.org 2016-09-13T10:48:24Z urn:sha1:4032e5491ac57026acad131e1d4e3563c96a2320 * Improved support for using the STDCALL calling convention in winsqlite3.dll. * Fix the sqlite3_trace_v2() interface so that it is disabled if either the callback or the mask arguments are zero, in accordance with the documentation. * Fix commenting errors and improve the comments generated on EXPLAIN listings when the -DSQLITE_ENABLE_EXPLAIN_COMMENTS compile-time option is used. * Fix the ".read" command in the command-line shell so that it understands that its input is not interactive. * Correct affinity computations for a SELECT on the RHS of an IN operator. * The ORDER BY LIMIT optimization is not valid unless the inner-most IN operator loop is actually used by the query plan. Fix for ticket 0c4df46116e90f92. * Fix an internal code generator problem that was causing some DELETE operations to no-op. 2016-08-14T11:19:08Z adam adam@pkgsrc.org 2016-08-14T11:19:08Z urn:sha1:c3fd76e648cf844f77f4682daf5986895d22c9cc * A performance enhancement to the page-cache "truncate" operation reduces COMMIT time by dozens of milliseconds on systems with a large page cache. * Fix to the --rbu option of sqldiff. 2016-08-09T14:54:25Z adam adam@pkgsrc.org 2016-08-09T14:54:25Z urn:sha1:a8eb6da7562a9b1cbbbe190d9403ee02c911c9ae Added support for WITHOUT ROWID virtual tables. Improved the query planner so that the OR optimization can be used on virtual tables even if one or more of the disjuncts use the LIKE, GLOB, REGEXP, MATCH operators. Added the CSV virtual table for reading RFC 4180 formatted comma-separated value files. Added the carray() table-valued function extension. Enabled persistent loadable extensions using the new SQLITE_OK_LOAD_PERMANENTLY return code from the extension entry point. Added the SQLITE_DBSTATUS_CACHE_USED_SHARED option to sqlite3_db_status(). Add the vfsstat.c loadable extension - a VFS shim that measures I/O together with an eponymous virtual table that provides access to the measurements. Improved algorithm for running queries with both an ORDER BY and a LIMIT where only the inner-most loop naturally generates rows in the correct order. Enhancements to Lemon parser generator, so that it generates a faster parser. The PRAGMA compile_options command now attempts to show the version number of the compiler that generated the library. Enhance PRAGMA table_info so that it provides information about eponymous virtual tables. Added the "win32-none" VFS, analogous to the "unix-none" VFS, that works like the default "win32" VFS except that it ignores all file locks. The query planner uses a full scan of a partial index instead of a full scan of the main table, in cases where that makes sense. Allow table-valued functions to appear on the right-hand side of an IN operator. Created the dbhash.exe command-line utility. Added two new C-language interfaces: sqlite3_expanded_sql() and sqlite3_trace_v2(). These new interfaces subsume the functions of sqlite3_trace() and sqlite3_profile() which are now deprecated. Added the json_quote() SQL function to the json1 extension. Disable the authorizer callback while reparsing the schema. Added the SQLITE_ENABLE_UNKNOWN_SQL_FUNCTION compile-time option and turned that option on by default when building the command-line shell. Bug Fixes: Fix the ALTER TABLE command so that it does not corrupt descending indexes when adding a column to a legacy file format database. Fix a NULL-pointer dereference/crash that could occurs when a transitive WHERE clause references a non-existent collating sequence. Improved the cost estimation for an index scan which includes a WHERE clause that can be partially or fully evaluated using columns in the index and without having to do a table lookup. This fixes a performance regression that occurred for some obscure queries following the ORDER BY LIMIT optimization introduced in version 3.12.0. 2016-05-21T11:19:30Z adam adam@pkgsrc.org 2016-05-21T11:19:30Z urn:sha1:291d61c70bd269543e0e8dcfa9be516ca957aeae Postpone I/O associated with TEMP files for as long as possible, with the hope that the I/O can ultimately be avoided completely. Merged the session extension into trunk. Added the ".auth ON|OFF" command to the command-line shell. Added the "--indent" option to the ".schema" and ".fullschema" commands of the command-line shell, to turn on pretty-printing. Added the ".eqp full" option to the command-line shell, that does both EXPLAIN and EXPLAIN QUERY PLAN on each statement that is evaluated. Improved unicode filename handling in the command-line shell on Windows. Improved resistance against goofy query planner decisions caused by incomplete or incorrect modifications to the sqlite_stat1 table by the application. Added the sqlite3_db_config(db,SQLITE_DBCONFIG_ENABLE_LOAD_EXTENSION) interface which allows the sqlite3_load_extension() C-API to be enabled while keeping the load_extension() SQL function disabled for security. Change the temporary directory search algorithm on Unix to allow directories with write and execute permission, but without read permission, to serve as temporary directories. Apply this same standard to the "." fallback directory. Bug Fixes: ---------- Fix a problem with the multi-row one-pass DELETE optimization that was causing it to compute incorrect answers with a self-referential subquery in the WHERE clause. Fix for ticket dc6ebeda9396087 Fix a possible segfault with DELETE when table is a rowid table with an INTEGER PRIMARY KEY and the WHERE clause contains a OR and the table has one or more indexes that are able to trigger the OR optimization, but none of the indexes reference any table columns other than the INTEGER PRIMARY KEY. Ticket 16c9801ceba49. When checking for the WHERE-clause push-down optimization, verify that all terms of the compound inner SELECT are non-aggregate, not just the last term. Fix for ticket f7f8c97e97597. Fix a locking race condition in Windows that can occur when two or more processes attempt to recover the same hot journal at the same time. 2016-04-20T05:04:44Z adam adam@pkgsrc.org 2016-04-20T05:04:44Z urn:sha1:26568e2f5ca958eeea22cf3cf06259dea3f90d51 Fix a backwards compatibility problem in version 3.12.0 and 3.12.1: Columns declared as "INTEGER" PRIMARY KEY (with quotes around the datatype keyword) where not being recognized as an INTEGER PRIMARY KEY, which resulted in an incompatible database file. Fix a bug (present since version 3.9.0) that can cause the DELETE operation to miss rows if PRAGMA reverse_unordered_selects is turned on. Fix a bug in the code generator that can causes incorrect results if two or more virtual tables are joined and the virtual table used in outer loop of the join has an IN operator constraint. Correctly interpret negative "PRAGMA cache_size" values when determining the cache size used for sorting large amounts of data. 2016-04-11T19:01:33Z ryoon ryoon@pkgsrc.org 2016-04-11T19:01:33Z urn:sha1:376dd503ef6cbcf8abfdfe66fd8909dfc4a2ce5f 2016-04-09T09:25:39Z adam adam@pkgsrc.org 2016-04-09T09:25:39Z urn:sha1:631b0bc04e8bb27687973d60aa81e5ea30cb7a3a Fix a boundary condition error introduced by version 3.12.0 that can result in a crash during heavy SAVEPOINT usage. Fix views so that they inherit column datatypes from the table that they are defined against, when possible. Fix the query planner so that IS and IS NULL operators are able to drive an index on a LEFT OUTER JOIN. 2016-04-08T07:54:27Z adam adam@pkgsrc.org 2016-04-08T07:54:27Z urn:sha1:806dcd831bde2757bd731caeb2d845a4f5c02df2 Potentially Disruptive Change: ------------------------------ The SQLITE_DEFAULT_PAGE_SIZE is increased from 1024 to 4096. The SQLITE_DEFAULT_CACHE_SIZE is changed from 2000 to -2000 so the same amount of cache memory is used by default. See the application note on the version 3.12.0 page size change for further information. Performance enhancements: ------------------------- Enhancements to the Lemon parser generator so that it creates a smaller and faster SQL parser. Only create master journal files if two or more attached databases are all modified, do not have PRAGMA synchronous set to OFF, and do not have the journal_mode set to OFF, MEMORY, or WAL. Only create statement journal files when their size exceeds a threshold. Otherwise the journal is held in memory and no I/O occurs. The threshold can be configured at compile-time using SQLITE_STMTJRNL_SPILL or at start-time using sqlite3_config(SQLITE_CONFIG_STMTJRNL_SPILL). The query planner is able to optimize IN operators on virtual tables even if the xBestIndex method does not set the sqlite3_index_constraint_usage.omit flag of the virtual table column to the left of the IN operator. The query planner now does a better job of optimizing virtual table accesses in a 3-way or higher join where constraints on the virtual table are split across two or more other tables of the join. More efficient handling of application-defined SQL functions, especially in cases where the application defines hundreds or thousands of custom functions. The query planner considers the LIMIT clause when estimating the cost of ORDER BY. The configure script (on unix) automatically detects pread() and pwrite() and sets compile-time options to use those OS interfaces if they are available. Reduce the amount of memory needed to hold the schema. Other miscellaneous micro-optimizations for improved performance and reduced memory usage. New Features: ------------- Added the SQLITE_DBCONFIG_ENABLE_FTS3_TOKENIZER option to sqlite3_db_config() which allows the two-argument version of the fts3_tokenizer() SQL function to be enabled or disabled at run-time. Added the sqlite3rbu_bp_progress() interface to the RBU extension. The PRAGMA defer_foreign_keys=ON statement now also disables RESTRICT actions on foreign key. Added the sqlite3_system_errno() interface. Added the SQLITE_DEFAULT_SYNCHRONOUS and SQLITE_DEFAULT_WAL_SYNCHRONOUS compile-time options. The SQLITE_DEFAULT_SYNCHRONOUS compile-time option replaces the SQLITE_EXTRA_DURABLE option, which is no longer supported. Enhanced the ".stats" command in the command-line shell to show more information about I/O performance obtained from /proc, when available. Bug fixes: ---------- Make sure the sqlite3_set_auxdata() values from multiple triggers within a single statement do not interfere with one another. Fix the code generator for expressions of the form "x IN (SELECT...)" where the SELECT statement on the RHS is a correlated subquery. Fix a harmless TSAN warning associated with the sqlite3_db_readonly() interface. 2016-03-21T00:33:16Z ryoon ryoon@pkgsrc.org 2016-03-21T00:33:16Z urn:sha1:a67bcc9603bdd3409959fa674a5c27a68b500e26 2016-03-06T12:12:00Z adam adam@pkgsrc.org 2016-03-06T12:12:00Z urn:sha1:b0c072c17840c0889ab38bcb673c1784e3847542