- announce-list - monetdb.org

Announcement: New Aug2024-SP1 Bugfix release of MonetDB suite
by Sjoerd Mullender 05 Nov '24

05 Nov '24

The MonetDB Foundation is pleased to announce the Aug2024-SP1 bugfix release of the MonetDB suite of programs. More information about MonetDB can be found on our website at <https://www.monetdb.org/>. For details on this release, please see the release notes at <https://www.monetdb.org/release-notes/aug2024/>. As usual, the download location is <https://www.monetdb.org/downloads/>. ### MonetDB5 Server - The server prints out an informative message for the case of a graceful termination. ### SQL Frontend - Improve casting to generic decimal type by choosing a better fit for precision and scale instead of defaulting to 18 and 3, respectively. - When for whatever reason the upgrade code produces an error, we now exit the server. Before the server would limp on with what is basically a broken database. - Improved the violation message of CHECK constraints when violated. It now includes the schema name of the constraint and the check clause. - Increase the buffer size used by hot snapshot from 64kiB to 1MiB, and make it configurable through setting 'hot_snapshot_buffer_size'. It must be a multiple of 512. ### Merovingian - Tweak socket parameters to simulate network activity on client connections. This prevents firewalls from killing connections that seem idle but are actually waiting for a long-running query. Can be controlled with a new 'keepalive' option to monetdbd. ### Bug Fixes - [7281](https://github.com/MonetDB/MonetDB/issues/7281): UDFs defined at compile time in a user schema should not become system functions - [7563](https://github.com/MonetDB/MonetDB/issues/7563): Unexpected result when using `IS DISTINCT FROM` in `VIEW` - [7567](https://github.com/MonetDB/MonetDB/issues/7567): creating remote table from subquery crashes the server - [7569](https://github.com/MonetDB/MonetDB/issues/7569): Column of temporary table changes when another is updated - [7570](https://github.com/MonetDB/MonetDB/issues/7570): BUG in the "str_to_timestamp" function - [7571](https://github.com/MonetDB/MonetDB/issues/7571): Crash when integer overflow in `ORDER BY` - [7572](https://github.com/MonetDB/MonetDB/issues/7572): column max length is not stored as specified and accepted at creation time - [7575](https://github.com/MonetDB/MonetDB/issues/7575): Incorrect BAT properties after mmapped BAT "leaks" to disk with restart. - [7576](https://github.com/MonetDB/MonetDB/issues/7576): unescaping UTF-16 code units goes wrong in json.text - [7577](https://github.com/MonetDB/MonetDB/issues/7577): Crash when using `CHECK` constraint - [7580](https://github.com/MonetDB/MonetDB/issues/7580): statistics optimizer handles date difference incorrectly - [7582](https://github.com/MonetDB/MonetDB/issues/7582): SIGSEGV when creating a SQL function with RETURN CASE WHEN EXISTS (..) - [7583](https://github.com/MonetDB/MonetDB/issues/7583): Query slowdown after deleting rows from large table - [7584](https://github.com/MonetDB/MonetDB/issues/7584): SO_KEEPALIVE should be configured sensibly - [7585](https://github.com/MonetDB/MonetDB/issues/7585): rel2bin_join: Assertion `sql->session->status == -10' failed. - [7587](https://github.com/MonetDB/MonetDB/issues/7587): Line/row numbers get out of sync with COPY INTO .. BEST EFFORT

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Announcement: New Aug2024 Feature release of MonetDB suite
by Sjoerd Mullender 26 Aug '24

26 Aug '24

The MonetDB Foundation is pleased to announce the Aug2024 feature release of the MonetDB suite of programs. More information about MonetDB can be found on our website at <https://www.monetdb.org/>. For details on this release, please see the release notes at <https://www.monetdb.org/release-notes/aug2024/>. As usual, the download location is <https://www.monetdb.org/downloads/>. The Aug2024 documentation can be found [here](https://www.monetdb.org/documentation-Aug2024/). ## Aug2024 Feature Release (11.51.3) ### - The CMake configuration files for building extensions have now been included in the various MonetDB development RPMs and debs. - Removed upgrade code for versions before Jul2021. - The shared library (.dll aka .so files) now have the version number as part of the name. This should allow the building of compatibility versions that can be installed in parallel to the latest version. - Some of the Debian/Ubuntu packages have been renamed. The old monetdb5 names have been changed to plain monetdb, and libmonetdb5-server-* packages have been renamed monetdb-*. - The names of some of the provided RPM files have been changed. References to the old MonetDB5 name have been removed. All packages are now just MonetDB. ### Client Package - Msqldump now accepts --output and --outputdir options. When the --outputdir option is used, the dump is placed in the file dump.sql in the specified directory and all tables are dumped to separate CSV files. In this way it is feasible to edit the dump script by hand if needed, even for a large database. - The --table (-t) option of msqldump now accepts SQL-style % wildcard characters to dump all tables that match the pattern. E.g. -t %test%.%test% dumps all tables with 'test' in both the schema and table name. - Implemented interrupt handling in mclient. When using mclient interactively, an interrupt (usually control-C) stops whatever the client is doing. When editing a line, the line is discarded; when editing a second or later line of a query, the whole query is discarded; when a query is being executed, the server is asked to stop the query at its earliest convenience. Stopping a running query can only be done with an up-to-date server. All of this does not work on Windows. ### Mapi Library - Add new columns to sys.sessions. Column 'language' is usually 'sql'. Column 'peer' is the network address of the client (something like '[::1]:46558' or '<UNIX SOCKET>'). Columns 'hostname', 'application', 'client', 'clientpid' and 'remark' can be set by the client. Libmapi/mclient, pymonetdb and monetdb-java have been modified to fill in sensible default values. ### ODBC Driver - Extended ODBC Data Source Setup program on Windows with fields to specify optional Client Information such as Application Name and Client Remark. - Extended ODBC Data Source Setup program on Windows with fields to specify new TLS Connection settings. - Extended ODBC Data Source Setup program on Windows with a Test-button to quickly test connectivity to a MonetDB server. - ODBC now supports TLS. It can be configured through the following DSN- or Connection String attributes (canonical name / user friendly name): TLS / Encrypt = ON/OFF CERT / Server Certificate = PATH CERTHASH / Server Certificate Hash = sha256:HEXDIGITS CLIENTKEY / Client Key = PATH CLIENTCERT / Client Certificate = PATH - Several more connection properties have been made configurable: SCHEMA / Schema = NAME TIMEZONE / Time Zone = Minutes East Of UTC REPLYSIZE / Reply Size = NUMBER LOGFILE / Log File = PATH LOGINTIMEOUT / Login Timeout = MILLISECONDS CONNECTIONTIMEOUT / Connection Timeout = MILLISECONDS AUTOCOMMIT / Autocommit = ON/OFF SOCK / Unix Socket = PATH (unix only) - SQLBrowseConnect() adds On/Off suggestions to boolean settings and prioritizes the DATABASE attribute if it notices monetdbd requires one. Apart from that only UID/User and PWD/Password are required, all others have sensible defaults. ### Stream Library - ICONV support has been removed from the stream library. The server itself only needs UTF-8 support. The client (mclient) does have iconv support. - CURL support has been removed from the stream library. If support is needed, look at the source code in either streamcat.c or mclient.c. ### MonetDB Common - Various changes were made having to do with things like case-insensitive comparisons and converting to upper or lower case. Case insensitive comparison (i.e. the ILIKE operator) uses case folding which is similar to converting to lower case, but changes more characters, also sometimes to multiple characters (e.g. German sharp s (ß) compares equal to SS). - Made some changes to how BAT descriptors are allocated. They are now allocated in bulk, meaning fewer malloc/free calls during processing. - Removed macro BBP_cache and its associated code. Checking whether a BAT is cached (loaded in memory) can be done by checking the BBPLOADED bit in the BBP_status value. Getting a pointer to the BAT descriptor can be done by using BBP_desc. - The SQL transaction ID is no longer saved in the BBP.dir file. - Made some changes to the TIMEOUT macros. Most importantly, they now get a pointer to a QryCtx structure as argument instead of the timeout value. ### SQL Frontend - The "phash" column in the sys.storage() table now indicates whether a hash exists. If the hash is not loaded but there is a hash available on disk, the phash value is "true", but the "hashes" value is 0. - Added execution privilege on all sys.generate_series(first, limit) and sys.generate_series(first, limit, stepsize) functions to public, so all users can now call these table producing generator functions. - Extend CREATE USER MAX_MEMORY and ALTER USER MAX_MEMORY to accept strings of the form '10MiB', '10G', etc. - Extended view sys.sessions and function sys.sessions() with new columns: language, peer, hostname, application, client, clientpid and remark. - All users now have SELECT privilege on view sys.sessions, but non-admin users only see their own sessions. - Added procedure sys.setclientinfo(property string, value string) to allow the client application to set a specific client info property. - Added system table sys.clientinfo_properties that lists the supported client info properties and their associated column name in sys.sessions view. It contains property names: ClientHostname, ApplicationName, ClientLibrary, ClientPid and ClientRemark. - Extended sys.generate_series() to generate dates. Added 2 new functions: sys.generate_series(first date, "limit" date, stepsize interval month) and sys.generate_series(first date, "limit" date, stepsize interval day). - Added support for select exp, count(*) group by 1 order by 1; ie. using numeric references in group by clause. - Added support for GROUP BY ALL. This finds all expressions from the selections which aren't aggregations and groups on those. At least one aggregation must be specified. The ALL keyword can also be replaced by '*', so: GROUP BY *. - Added support for ORDER BY ALL. This orders on all columns of the selection. The ALL keyword can also be replaced by '*', so: ORDER BY *. - Removed the obsolete ANALYZE statement syntax options: SAMPLE nn and MINMAX. Both options have been ignored since release Jan2022. Now they are no longer accepted in the ANALYZE statement. - The ANALYZE statement can now be used in procedures, functions and triggers. - Make schema renaming more permissive. A schema can be renamed if it does not contain objects that are a dependency for objects outside the schema. If such dependencies exist, they are shown in the table sys.dependencies. - Add a DECIMAL AS clause to COPY INTO that configures the decimal separator and thousands separator for decimals, temporal types and floats. - Introduce IS [NOT] DISTINCT FROM syntax. The syntax allows two values to be compared. The comparison always returns boolean FALSE or TRUE never NULL. - SQL2023 feature: Introduce UNIQUE NULLS [NOT] DISTINCT syntax which allows for NULLS to be treated as unique, i.e. a column with this constraint can have one NULL value at most. - SQL2023 feature: Allow project and ORDER BY expressions on UNIQUE constrained columns when the primary key column is used in a GROUP BY expression. ### Bug Fixes - [7045](https://github.com/MonetDB/MonetDB/issues/7045): A value filtered in a subquery finds its way to a later filter in the outer query - [7097](https://github.com/MonetDB/MonetDB/issues/7097): Add an 'ANY' or 'ARBITRARY' aggregate function - [7245](https://github.com/MonetDB/MonetDB/issues/7245): monetdbe silently importing 0 rows, at random - [7265](https://github.com/MonetDB/MonetDB/issues/7265): COPY INTO Not Reading in all records of fixed width delimited file - [7272](https://github.com/MonetDB/MonetDB/issues/7272): Missed rewrite to bulk operators in simple SQL UDF - [7312](https://github.com/MonetDB/MonetDB/issues/7312): Test Button for ODBC Driver - [7332](https://github.com/MonetDB/MonetDB/issues/7332): Support IS [NOT] DISTINCT FROM predicate - [7353](https://github.com/MonetDB/MonetDB/issues/7353): INTERVAL SECOND columns become incorrect when an INTERVAL HOUR column is present - [7367](https://github.com/MonetDB/MonetDB/issues/7367): Libraries linked more than once? - [7370](https://github.com/MonetDB/MonetDB/issues/7370): timestamp_to_str function not aware of timezone - [7374](https://github.com/MonetDB/MonetDB/issues/7374): Different date and time returns - [7392](https://github.com/MonetDB/MonetDB/issues/7392): Evaluate Profile-Guided Optimization - [7424](https://github.com/MonetDB/MonetDB/issues/7424): Performance issue in select-joins - [7459](https://github.com/MonetDB/MonetDB/issues/7459): Crash when using `CONTAINS` in `ORDER BY` clause - [7460](https://github.com/MonetDB/MonetDB/issues/7460): Crash when using `CAST` and `BETWEEN AND` - [7463](https://github.com/MonetDB/MonetDB/issues/7463): Unexpected result when using `CONTAINS` and type casting - [7466](https://github.com/MonetDB/MonetDB/issues/7466): Crash when `INNER JOIN` with `CONTAINS` - [7467](https://github.com/MonetDB/MonetDB/issues/7467): Conversion TIMESTAMPTZ to TIME does not take session TZ into account - [7474](https://github.com/MonetDB/MonetDB/issues/7474): MonetDB server crashes in `VLTgenerator_table_` - [7475](https://github.com/MonetDB/MonetDB/issues/7475): MonetDB server crashes in `__nss_database_lookup` - [7476](https://github.com/MonetDB/MonetDB/issues/7476): MonetDB server crashes in `subrel_bin` - [7477](https://github.com/MonetDB/MonetDB/issues/7477): MonetDB server crashes in `atom_cmp` - [7480](https://github.com/MonetDB/MonetDB/issues/7480): MonetDB server crashes in `get_rel_count` - [7481](https://github.com/MonetDB/MonetDB/issues/7481): MonetDB server crashes in `mvc_row_result_wrap` - [7482](https://github.com/MonetDB/MonetDB/issues/7482): MonetDB server crashes in `bin_find_smallest_column` - [7483](https://github.com/MonetDB/MonetDB/issues/7483): MonetDB server crashes in `rel_get_statistics_` - [7484](https://github.com/MonetDB/MonetDB/issues/7484): MonetDB server crashes in `rel_optimize_projections_` - [7485](https://github.com/MonetDB/MonetDB/issues/7485): MonetDB server crashes in `exp_setalias` - [7486](https://github.com/MonetDB/MonetDB/issues/7486): MonetDB server crashes in `ALGgroupby` - [7488](https://github.com/MonetDB/MonetDB/issues/7488): MonetDB server crashes in `strCmp` - [7497](https://github.com/MonetDB/MonetDB/issues/7497): Multi-column IN clause with value list produces syntax error - [7500](https://github.com/MonetDB/MonetDB/issues/7500): request: ANALYZE statement should be allowed to be used in the body of a procedure or function or trigger. - [7514](https://github.com/MonetDB/MonetDB/issues/7514): Nonexistent window function raises `ParseException:SQLparser:42000!Query too complex: running out of stack space` - [7517](https://github.com/MonetDB/MonetDB/issues/7517): UNLOGGED tables don't get cleaned up properly when DROPped. - [7521](https://github.com/MonetDB/MonetDB/issues/7521): Unexpected result when using `IS DISTINCT FROM` - [7522](https://github.com/MonetDB/MonetDB/issues/7522): Crash when creating view with `HAVING` - [7523](https://github.com/MonetDB/MonetDB/issues/7523): Assertion failure when using `CONTAINS` - [7524](https://github.com/MonetDB/MonetDB/issues/7524): Unexpected error when using `NATURAL RIGHT JOIN` - [7525](https://github.com/MonetDB/MonetDB/issues/7525): Related to bug #7422 (variadic arguments in aggregate UDFs) - [7527](https://github.com/MonetDB/MonetDB/issues/7527): Unexpected result when using `IS DISTINCT FROM` with `RIGHT JOIN` - [7528](https://github.com/MonetDB/MonetDB/issues/7528): Assertion failure when using `JAROWINKLER` in `ORDER BY` clause - [7529](https://github.com/MonetDB/MonetDB/issues/7529): Finding minimum value in reverse sorted column with NULL values at the end gives wrong result. - [7530](https://github.com/MonetDB/MonetDB/issues/7530): Assertion failure when using `JAROWINKLER` with empty string - [7533](https://github.com/MonetDB/MonetDB/issues/7533): DROP of a schema with CASCADE option drops tables, but bats are not removed. - [7534](https://github.com/MonetDB/MonetDB/issues/7534): Unexpected result when using `IS DISTINCT FROM` with `AND` - [7535](https://github.com/MonetDB/MonetDB/issues/7535): Assertion failure when using `GROUP BY` when `CREATE VIEW` - [7538](https://github.com/MonetDB/MonetDB/issues/7538): BUG with decimal values - [7539](https://github.com/MonetDB/MonetDB/issues/7539): Crash when using `IS DISTINCT FROM` with `SIN` - [7540](https://github.com/MonetDB/MonetDB/issues/7540): Assertion failure when using `STARTSWITH` - [7542](https://github.com/MonetDB/MonetDB/issues/7542): Nested query triggers an assert - [7543](https://github.com/MonetDB/MonetDB/issues/7543): Unexpected result when using `IS DISTINCT FROM` with constants - [7544](https://github.com/MonetDB/MonetDB/issues/7544): Unexpected result when using `STARTSWITH` - [7545](https://github.com/MonetDB/MonetDB/issues/7545): Crash when creating view with `GROUP BY` - [7547](https://github.com/MonetDB/MonetDB/issues/7547): drop login trigger causes server crash - [7550](https://github.com/MonetDB/MonetDB/issues/7550): non-admin user can no longer query sys.statistics or information_schema.tables - [7552](https://github.com/MonetDB/MonetDB/issues/7552): Unexpected result when using `NULL` constant in comparison - [7553](https://github.com/MonetDB/MonetDB/issues/7553): Assertion failure when using `INNER JOIN` on `STARTSWITH` - [7554](https://github.com/MonetDB/MonetDB/issues/7554): Unexpected result when using range comparison with `NULL` - [7555](https://github.com/MonetDB/MonetDB/issues/7555): Unexpected result when casting integer to boolean in comparison - [7556](https://github.com/MonetDB/MonetDB/issues/7556): Assertion failure when using `STARTSWITH` with view - [7562](https://github.com/MonetDB/MonetDB/issues/7562): Assertion failure when comparing `INTERVAL` value - [7566](https://github.com/MonetDB/MonetDB/issues/7566): After a while, all new sessions (connections) may get refused

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Announcement: New Dec2023-SP4 Bugfix release of MonetDB suite
by Sjoerd Mullender 09 Jul '24

09 Jul '24

The MonetDB Foundation is pleased to announce the Dec2023-SP4 bugfix release of the MonetDB suite of programs. More information about MonetDB can be found on our website at <https://www.monetdb.org/>. For details on this release, please see the release notes at <https://www.monetdb.org/release-notes/dec2023/>. As usual, the download location is <https://www.monetdb.org/downloads/>. ### MonetDB5 Server - The mserver5 program has a new option: --without-geom. If the server was compiled with geom support (or the geom module was installed in a binary distribution), this option allows the server to start without the geom module, so that it can proceed with a database that was created without geom. ### SQL Frontend - When sys.persist_unlogged is called for a table, it may return that zero rows were persisted. If this is because the call was done too early, i.e. the table was recently created and the write-ahead log where this was logged has not been processed yet, the call will request an immediate write-ahead log rotation. This means that the WAL will be processed as soon as possible and a new call to sys.persist_unlogged soon after will likely return a positive result. ### Bug Fixes - [7509](https://github.com/MonetDB/MonetDB/issues/7509): MonetDB Dec2023-SP2 crashes at `sql_init_subtype` - [7511](https://github.com/MonetDB/MonetDB/issues/7511): MonetDB Dec2023-SP2 crashes with the `PASSWORD_HASH` function - [7512](https://github.com/MonetDB/MonetDB/issues/7512): MonetDB Dec2023-SP2 crashes with the `GET_MERGE_TABLE_PARTITION_EXPRESSIONS` function - [7513](https://github.com/MonetDB/MonetDB/issues/7513): MonetDB Dec2023-SP2 crashes with the `GETHOST` function - [7518](https://github.com/MonetDB/MonetDB/issues/7518): mserver reports errors when starting if geom module is enabled but database was created without - [7526](https://github.com/MonetDB/MonetDB/issues/7526): deadlock, causing new connections to hang indefinitely - [7531](https://github.com/MonetDB/MonetDB/issues/7531): loading more than 2147483647 rows gives issue. - [7536](https://github.com/MonetDB/MonetDB/issues/7536): Truncated file when dumping a table from mclient into a gzipped file - [7537](https://github.com/MonetDB/MonetDB/issues/7537): MonetDB crashes with a SIGSEGV due to a null pointer dereference when using prepared statements - [7541](https://github.com/MonetDB/MonetDB/issues/7541): Unexpected result when using `LEVENSHTEIN` - [7546](https://github.com/MonetDB/MonetDB/issues/7546): monetdbd leaks file descriptors when starting mserver5.

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Announcement: New Dec2023-SP3 Bugfix release of MonetDB suite
by Sjoerd Mullender 10 May '24

10 May '24

The MonetDB Foundation is pleased to announce the Dec2023-SP3 bugfix release of the MonetDB suite of programs. More information about MonetDB can be found on our website at <https://www.monetdb.org/>. For details on this release, please see the release notes at <https://www.monetdb.org/release-notes/dec2023/>. As usual, the download location is <https://www.monetdb.org/downloads/>. ### Bug Fixes - [7422](https://github.com/MonetDB/MonetDB/issues/7422): Aggregate functions with variadic arguments - [7472](https://github.com/MonetDB/MonetDB/issues/7472): MonetDB server crashes in `tail_type` - [7473](https://github.com/MonetDB/MonetDB/issues/7473): MonetDB server crashes in `SQLunionfunc` - [7478](https://github.com/MonetDB/MonetDB/issues/7478): MonetDB server crashes in `exp_equal` - [7496](https://github.com/MonetDB/MonetDB/issues/7496): Query on view fails to produce a resultset. Assertion triggered in rel2bin_select. - [7499](https://github.com/MonetDB/MonetDB/issues/7499): create schema + set schema inside a transaction that is rolled back causes the connection to be aborted - [7501](https://github.com/MonetDB/MonetDB/issues/7501): files remain in backup causing problems at restart - [7503](https://github.com/MonetDB/MonetDB/issues/7503): MonetDB server crashes using `WHEN MATCHED THEN UPDATE` - [7504](https://github.com/MonetDB/MonetDB/issues/7504): possible deadlock when a bat is made persistent when it is also getting unloaded - [7506](https://github.com/MonetDB/MonetDB/issues/7506): MonetDB Dec2023-SP2 crashes at `rel_value_exp2` - [7507](https://github.com/MonetDB/MonetDB/issues/7507): BBPextend: ERROR: trying to extend BAT pool beyond the limit (163840000) - [7508](https://github.com/MonetDB/MonetDB/issues/7508): MonetDB Dec2023-SP2 crashes at `exp_ref`

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Announcement: New Dec2023-SP2 Bugfix release of MonetDB suite
by Sjoerd Mullender 15 Apr '24

15 Apr '24

The MonetDB Foundation is pleased to announce the Dec2023-SP2 bugfix release of the MonetDB suite of programs. More information about MonetDB can be found on our website at <https://www.monetdb.org/>. For details on this release, please see the release notes at <https://www.monetdb.org/release-notes/dec2023/>. As usual, the download location is <https://www.monetdb.org/downloads/>. ### MonetDB Common - Threads have their own list of free bats. The list was not returned to the system when a thread exited, meaning that the free bats that were in the list would not be reused by any thread. This has been fixed. - Fixed a couple of deadlock situations, one actually observed, one never observed. ### MonetDB5 Server - Fixed interaction between mserver5 and remote mserver5 when only one of the two has 128 bit integer support. ### SQL Frontend - Fixed issue where equal column aliases were created. When those aliases were parsed on the remote side it could give crashes. ### Bug Fixes - [7469](https://github.com/MonetDB/MonetDB/issues/7469): Crash when using `CONTAINS` - [7479](https://github.com/MonetDB/MonetDB/issues/7479): MonetDB server crashes in `exp_ref` - [7490](https://github.com/MonetDB/MonetDB/issues/7490): commonTerms optimizer no longer works - [7495](https://github.com/MonetDB/MonetDB/issues/7495): Crash when simultaneously querying and updating a string column.

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Announcement: New Dec2023-SP1 Bugfix release of MonetDB suite
by Sjoerd Mullender 18 Mar '24

18 Mar '24

The MonetDB Foundation is pleased to announce the Dec2023-SP1 bugfix release of the MonetDB suite of programs. More information about MonetDB can be found on our website at <https://www.monetdb.org/>. For details on this release, please see the release notes at <https://www.monetdb.org/release-notes/dec2023/>. As usual, the download location is <https://www.monetdb.org/downloads/>. ### - The copyright for the MonetDB software has been transferred to the newly established MonetDB Foundation, a not-for-profit foundation with the express goal of furthering the MonetDB database system. The license for the software does not change: MonetDB remains fully open source. ### Client Package - Fixed an issue where mclient wouldn't exit if the server it had connected to exited for whatever reason while the client was waiting for a query result. ### MonetDB Common - The internal hash function for floating point types has been changed. It is now no longer based on the bit representation, but on the value, meaning that +0 and -0 (yes, they both exist in floating point) now hash to the same value. - Fixed a regression where bats weren't always cleaned up when they weren't needed anymore. In particular, after a DELETE FROM table query without a WHERE clause (which deletes all rows from the table), the bats for the table get replaced by new ones, and the old, now unused, bats weren't removed from the database. ### Geom Module - We switched over to using the reentrant interface of the geos library. This fixed a number of bugs that would occur sporadically. ### SQL Frontend - performance improvement of 'startswith' and 'endswith' filter functions for join operators - The function json.isvalid(json) incorrectly returned true if the argument was null. It should return null. ### Bug Fixes - [6800](https://github.com/MonetDB/MonetDB/issues/6800): Please add information_schema (ANSI SQL norm) - [7152](https://github.com/MonetDB/MonetDB/issues/7152): Occasional dbfarm corruption upon database restart - [7390](https://github.com/MonetDB/MonetDB/issues/7390): Some MonetDB Server crashes found - [7412](https://github.com/MonetDB/MonetDB/issues/7412): MonetDB server crashes in `vscanf` - [7415](https://github.com/MonetDB/MonetDB/issues/7415): MonetDB server crashes in `HEAP_malloc` - [7416](https://github.com/MonetDB/MonetDB/issues/7416): MonetDB server crashes in `atom_get_int` - [7417](https://github.com/MonetDB/MonetDB/issues/7417): MonetDB server crashes in `trimchars`. - [7418](https://github.com/MonetDB/MonetDB/issues/7418): MonetDB server crashes in `bind_col_exp` - [7420](https://github.com/MonetDB/MonetDB/issues/7420): Performance issue with lower(string) - [7425](https://github.com/MonetDB/MonetDB/issues/7425): The last statement, execution error, is a false positive? - [7426](https://github.com/MonetDB/MonetDB/issues/7426): Unexpected result for INNER JOIN with IS NOT NULL - [7428](https://github.com/MonetDB/MonetDB/issues/7428): Unexpected result when using BETWEEN operator - [7429](https://github.com/MonetDB/MonetDB/issues/7429): Unexpected result when using `CASE WHEN` - [7430](https://github.com/MonetDB/MonetDB/issues/7430): Unexpected result when using `AND` and `IS NOT NULL` - [7431](https://github.com/MonetDB/MonetDB/issues/7431): [bug] Error code found, please confirm - [7432](https://github.com/MonetDB/MonetDB/issues/7432): MonetDB server crashes in `dameraulevenshtein` - [7433](https://github.com/MonetDB/MonetDB/issues/7433): MonetDB server crashes in `exp_atom` - [7434](https://github.com/MonetDB/MonetDB/issues/7434): MonetDB server crashes in `exp_bin` - [7435](https://github.com/MonetDB/MonetDB/issues/7435): MonetDB server crashes in `exp_copy` - [7436](https://github.com/MonetDB/MonetDB/issues/7436): MonetDB server crashes in `exp_ref` - [7437](https://github.com/MonetDB/MonetDB/issues/7437): MonetDB server crashes in `exp_values_set_supertype` - [7438](https://github.com/MonetDB/MonetDB/issues/7438): MonetDB server crashes in `exps_bind_column` - [7439](https://github.com/MonetDB/MonetDB/issues/7439): MonetDB server crashes in `exps_card` - [7440](https://github.com/MonetDB/MonetDB/issues/7440): MonetDB server crashes in `gc_col` - [7441](https://github.com/MonetDB/MonetDB/issues/7441): MonetDB server crashes in `is_column_unique` - [7442](https://github.com/MonetDB/MonetDB/issues/7442): MonetDB server crashes in `mat_join2` - [7443](https://github.com/MonetDB/MonetDB/issues/7443): MonetDB server crashes in `merge_table_prune_and_unionize` - [7444](https://github.com/MonetDB/MonetDB/issues/7444): [bug] the table cannot be created because the reserved word is incorrectly set - [7447](https://github.com/MonetDB/MonetDB/issues/7447): Unexpected result when using `BETWEEN` in `INNER JOIN` - [7448](https://github.com/MonetDB/MonetDB/issues/7448): Unexpected result when using `AND`/`OR` chain - [7450](https://github.com/MonetDB/MonetDB/issues/7450): Unexpected result when `CREATE VIEW` with `WHERE NULL` - [7451](https://github.com/MonetDB/MonetDB/issues/7451): Unexpected result when using `BETWEEN` and `CAST` - [7453](https://github.com/MonetDB/MonetDB/issues/7453): Cannot recover an msqldump - [7455](https://github.com/MonetDB/MonetDB/issues/7455): Unexpected result when using `BETWEEN` with `BOOLEAN` values - [7456](https://github.com/MonetDB/MonetDB/issues/7456): Crash when `INNER JOIN` with `VIEW` - [7457](https://github.com/MonetDB/MonetDB/issues/7457): Unexpected result when using `AND` with `INTEGER` - [7458](https://github.com/MonetDB/MonetDB/issues/7458): Unexpected result when using `SIGN` - [7461](https://github.com/MonetDB/MonetDB/issues/7461): Crash by potentially use of bad escape characters - [7462](https://github.com/MonetDB/MonetDB/issues/7462): Crash when using `BETWEEN AND` - [7465](https://github.com/MonetDB/MonetDB/issues/7465): Unexpected result when using `NULL` in `BETWEEN`

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Announcement: New Dec2023 Feature release of MonetDB suite
by Sjoerd Mullender 28 Dec '23

28 Dec '23

The MonetDB team at MonetDB Solutions BV is pleased to announce the Dec2023 feature release of the MonetDB suite of programs. More information about MonetDB can be found on our website at <https://www.monetdb.org/>. For details on this release, please see the release notes at <https://www.monetdb.org/release-notes/dec2023/>. As usual, the download location is <https://www.monetdb.org/downloads/>. The Dec2023 documentation can be found [here](https://www.monetdb.org/documentation-Dec2023/). ## Dec2023 Feature Release (11.49.1) ### - All binary packages are now signed with a new key with key fingerprint DBCE 5625 94D7 1959 7B54 CE85 3F1A D47F 5521 A603. - The ranges of merge partitions are now pushed down into the low level GDK operations, giving them a handle to sometimes execute more efficiently. - Removed the PYTHON MAP external language option, as after a fork the synchronization primitives could be in any state, leading to deadlocks. During the upgrade function definitions will fallback to the normal PYTHON language option. - Implemented direct masking for strimp construction. The strimps datastructure now keeps an array of 65K 64-bit integers that is zero everywhere except at the indexes that correspond to header pairs. The entry for the nth pair in order has the nth bit of the bitstring on. These can be used to quickly construct bitstrings. ### ODBC Driver - Corrected the output value of column CHAR_OCTET_LENGTH of ODBC functions SQLColumns() and SQLProcedureColumns(). ### MonetDB Common - Fixed a (rare) race condition between copying a bat (COLcopy) and updates happening in parallel to that same bat. This may only be an actual problem with string bats, and then only in very particular circumstances. - Introduced options wal_max_dropped, wal_max_file_age and wal_max_file_size that control the write-ahead log file rotation. - Removed function BATroles to set column names on BATs. - Removed the compiled-in limit on the number of threads that can be used. The number of threads are still limited, but the limit is dictated solely by the operating system and the availability of enough memory. - We now prevent accidental upgrades from a database without 128 bit integers to one with 128 bit integers (also known as HUGEINT) from happening. Upgrades will only be done if the server is started with the option --set allow_hge_upgrade=yes. ### Geom Module - Because recent changes to the geom module require the use of geos 3.10, the geom module is no longer available in older versions of Debian and Ubuntu. Specifically, Debian 10 and 11 (buster and bullseye) and Ubuntu 20.04 (Focal Fossa) are affected. There is no automatic upgrade available for databases that were geom enabled to databases that are not, so dump + restore is the only option (if no geom types are actually used). - Implements Rtree index in GDK layer based on librtree. The index is used in the implementation of the filter functions ST_Intersects and ST_Dwithin for geometric points. - Improves shapefile support by replacing functions SHPattach, SHPpartialimport, ahd SHPimport with SHPload. - Introduces functions ST_DistanceGeographic, ST_DwithinGeographic, ST_IntersectsGeographic, ST_CoversGeographic, ST_Collects with geodesic semantics. ST_Transform can be used to convert geodetic into geographic data using libPROJ. ### MonetDB5 Server - Removed MAL functions bat.reuse and bat.reuseMap. - The MAL functions io.import and io.export have been removed. - Removed MAL functions bat.getRole and bat.setColumn since the underlying function BATroles was removed. - Change how json is stored in the database: We now normalize json strings after parsing, removing whitespace and eliminating duplicate keys in objects. - The function json.filter now properly returns json scalars instead of wrapping them in an array. - Removed the MAL tokenizer module. It was never usable from SQL and in this form never would be. ### SQL Frontend - Introduction of table returning function `persist_unlogged(schema string, table string)` that attempts to persist data in disk if "schema"."table" is unlogged table in insert only mode. If persist attempt is successful, the count of the persisted rows is returned, otherwise the count is 0. - Added ISO/IEC 9075-11 SQL/Schemata (SQL:2011) with SQL system views: information_schema.schemata information_schema.tables information_schema.views information_schema.columns information_schema.character_sets information_schema.check_constraints information_schema.table_constraints information_schema.referential_constraints information_schema.routines information_schema.parameters information_schema.sequences For details see https://www.monetdb.org/documentation/user-guide/sql-catalog/information_sc… Most views have been extended (after the standard columns) with MonetDB specific information columns such as schema_id, table_id, column_id, etc. This simplifies filtering and joins with system tables/views in sys schema when needed. Note: MonetDB does NOT support catalog qualifiers in object names, so all the CATALOG columns in these information_schema views will always return NULL. - Added support for generated column syntax: GENERATED BY DEFAULT AS IDENTITY ... This allows the user to override the default generated sequence value during inserts. - Added SQL support for: <result offset clause> and <fetch first clause> in <query expression> ::= [ <with clause> ] <query expression body> [ <order by clause> ] [ <result offset clause> ] [ <fetch first clause> ] [ <sample clause> ] <result offset clause> ::= OFFSET <offset row count> [ {ROW|ROWS} ] <fetch first clause> ::= FETCH {FIRST|NEXT} <fetch first row count> {ROW|ROWS} ONLY ### Bug Fixes - [6933](https://github.com/MonetDB/MonetDB/issues/6933): Add support for scalar function IFNULL(expr1, expr2) - [7044](https://github.com/MonetDB/MonetDB/issues/7044): Improve error message regarding 3-level SQL names - [7261](https://github.com/MonetDB/MonetDB/issues/7261): Misleading error message - [7274](https://github.com/MonetDB/MonetDB/issues/7274): Aggregate function ST_Collect crashes mserver5 - [7376](https://github.com/MonetDB/MonetDB/issues/7376): Concurrency Issue: Second Python UDF Awaits Completion of First UDF - [7391](https://github.com/MonetDB/MonetDB/issues/7391): SQL 2023 : greatest/least functions with unlimited arguments (not only 2) - [7403](https://github.com/MonetDB/MonetDB/issues/7403): Join not recognized between two row_number() columns - [7413](https://github.com/MonetDB/MonetDB/issues/7413): MonetDB server crashes in `BATcalcbetween_intern`

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Announcement: New Jun2023-SP3 Bugfix release of MonetDB suite
by Sjoerd Mullender 20 Nov '23

20 Nov '23

The MonetDB team at MonetDB Solutions BV is pleased to announce the Jun2023-SP3 bugfix release of the MonetDB suite of programs. More information about MonetDB can be found on our website at <https://www.monetdb.org/>. For details on this release, please see the release notes at <https://www.monetdb.org/release-notes/jun2023/>. As usual, the download location is <https://www.monetdb.org/downloads/>. ### MonetDB Common - Fixed a regression where after a while the write-ahead log files weren't being rotated, meaning from some point onwards, the newest file just kept on growing. - When saving the SQL catalog during a low-level commit, we should only save the part of the catalog that corresponds to the part of the write-ahead log that has been processed. What we did was save more, which resulted in the catalog containing references to tables and columns whose disk presence is otherwise only in the write-ahead log. - A bug was fixed where the administration of which bats were in use was interpreted incorrectly during startup, causing problems later. One symptom that has been observed was failure to startup with a message that the catalog tables could not be loaded. ### SQL Frontend - Added a missing interface function sys.timestamp_to_str with a TIMESTAMP (as opposed to TIMESTAMP WITH TIME ZONE) argument. The missing interface caused error messages being produced when the function was called with a TIMESTAMP argument, although it did give the correct result. ### Bug Fixes - [7300](https://github.com/MonetDB/MonetDB/issues/7300): Implement missing standard SQL DATE and TIMESTAMP functions - [7324](https://github.com/MonetDB/MonetDB/issues/7324): string_distance('method',str1, str2) as a generic distance function - [7409](https://github.com/MonetDB/MonetDB/issues/7409): Numpy table returning UDFs with variadic arguments - [7410](https://github.com/MonetDB/MonetDB/issues/7410): SIGSEGV cause database corruption

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Announcement: New Jun2023-SP2 Bugfix release of MonetDB suite
by Sjoerd Mullender 03 Oct '23

03 Oct '23

The MonetDB team at MonetDB Solutions BV is pleased to announce the Jun2023-SP2 bugfix release of the MonetDB suite of programs. More information about MonetDB can be found on our website at <https://www.monetdb.org/>. For details on this release, please see the release notes at <https://www.monetdb.org/release-notes/jun2023/>. As usual, the download location is <https://www.monetdb.org/downloads/>. ### - Fixed an installation issue on Debian and Ubuntu introduced in the last build. - Do a lot more error checking, mostly for allocation failures. More is still needed, though. - Improve performance of the ILIKE operator when the pattern contains only ASCII characters. In this case we do not need to treat any characters as UTF-8 and we can use much faster routines that perform byte comparisons. ### MonetDB Common - Fixed a number of data races (race conditions). - Fixed a reference counting problem when a BAT could nog be loaded, e.g. because of resource limitations. - Only check for virtual memory limits when creating or growing bats, not for general memory allocations. There is (still) too much code that doesn't properly handle failing allocations, so we need to avoid those as much as possible. This has mostly an effect if there are virtual memory size restrictions imposed by cgroups (memory.swap.max in cgroups v2, memory.memsw.limit_in_bytes in cgroups v1). - The low-level commit turned out to always commit every persistent bat in the system. There is no need for that, it should only commit bats that were changed. This has now been fixed. - Implemented timeout/exit checks in a bunch more operators. Long(er) running operators occasionally check whether they're taking too long (past a user-specified timeout) or whether the server is exiting. This is now done in more places. ### Bug Fixes - [7094](https://github.com/MonetDB/MonetDB/issues/7094): Drop remote tables in transactions and rollback - [7303](https://github.com/MonetDB/MonetDB/issues/7303): Improve the performance of multi-column filters - [7400](https://github.com/MonetDB/MonetDB/issues/7400): VM max memory is not check correctly for cgroups v2 - [7401](https://github.com/MonetDB/MonetDB/issues/7401): Column aliases used incorrectly in UNION subqueries - [7402](https://github.com/MonetDB/MonetDB/issues/7402): Privileges on merge table not propagated to partition tables

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Announcement: New Jun2023-SP1 Bugfix release of MonetDB suite
by Sjoerd Mullender 25 Jul '23

25 Jul '23

The MonetDB team at MonetDB Solutions BV is pleased to announce the Jun2023-SP1 bugfix release of the MonetDB suite of programs. More information about MonetDB can be found on our website at <https://www.monetdb.org/>. For details on this release, please see the release notes at <https://www.monetdb.org/release-notes/jun2023/>. As usual, the download location is <https://www.monetdb.org/downloads/>. ### MonetDB5 Server - There is now a new option --set tablet_threads=N to limit the number of threads used for a COPY INTO from CSV file query. This option can also be set for a specific database using the monetdb command using the ncopyintothreads property. ### SQL Frontend - An upgrade that both creates a new .snapshot user and extends the sys.db_user_info table with (among others) a password column did these in such a way that the passord value for the new user was NULL. This is fixed by updating the password. ### Bug Fixes - [7388](https://github.com/MonetDB/MonetDB/issues/7388): Query results in large cross product - [7394](https://github.com/MonetDB/MonetDB/issues/7394): BBPextend: ERROR: trying to extend BAT pool beyond the limit (163840000)

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