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firebird-mirror/CHANGELOG.md
Dmitry Yemanov 11dd013f0e Misc
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# v4.0 Beta 2 (14-May-2020)
## New features
* [CORE-6287](http://tracker.firebirdsql.org/browse/CORE-6287): SET BIND OF type1 TO type2
Reference(s): [/doc/sql.extensions/README.set_bind.md](https://github.com/FirebirdSQL/firebird/raw/master/doc/sql.extensions/README.set_bind.md)
Contributor(s): Alex Peshkoff
* [CORE-6285](http://tracker.firebirdsql.org/browse/CORE-6285): SQL-level replication management
Reference(s): [/doc/README.replication.md](https://github.com/FirebirdSQL/firebird/raw/master/doc/README.replication.md), [/doc/sql.extensions/README.ddl.txt](https://github.com/FirebirdSQL/firebird/raw/master/doc/sql.extensions/README.ddl.txt)
Contributor(s): Dmitry Yemanov
* [CORE-6109](http://tracker.firebirdsql.org/browse/CORE-6109): Changed FLOAT to a SQL standard compliant FLOAT datatype
Reference(s): [/doc/sql.extensions/README.floating_point_types.md](https://github.com/FirebirdSQL/firebird/raw/master/doc/sql.extensions/README.floating_point_types.md)
Contributor(s): Mark Rotteveel
* [CORE-6018](http://tracker.firebirdsql.org/browse/CORE-6018): Make it possible to start multiple transactions (possibly in different attachments) using the same initial transaction snapshot
Reference(s): [/doc/README.transaction_at_snapshot.md](https://github.com/FirebirdSQL/firebird/raw/master/doc/README.transaction_at_snapshot.md)
Contributor(s): Adriano dos Santos Fernandes
* [CORE-4933](http://tracker.firebirdsql.org/browse/CORE-4933): Add better transaction control to ISQL
Reference(s): [/doc/README.isql_enhancements.txt](https://github.com/FirebirdSQL/firebird/raw/master/doc/README.isql_enhancements.txt)
Contributor(s): Vlad Khorsun
* [CORE-3435](http://tracker.firebirdsql.org/browse/CORE-3435): Lateral derived tables
Reference(s): [/doc/sql.extensions/README.derived_tables.txt](https://github.com/FirebirdSQL/firebird/raw/master/doc/sql.extensions/README.derived_tables.txt)
Contributor(s): Dmitry Yemanov
## Improvements
* [CORE-6286](http://tracker.firebirdsql.org/browse/CORE-6286): Make usage of TIMESTAMP/TIME WITH TIME ZONE convenient for users when appropriate ICU library is not installed on the client side
Reference(s): [/doc/sql.extensions/README.time_zone.md](https://github.com/FirebirdSQL/firebird/raw/master/doc/sql.extensions/README.time_zone.md), [/doc/sql.extensions/README.set_bind.md](https://github.com/FirebirdSQL/firebird/raw/master/doc/sql.extensions/README.set_bind.md)
Contributor(s): Alex Peshkoff
* [CORE-6279](http://tracker.firebirdsql.org/browse/CORE-6279): Put options in user management statements in any order
Reference(s): [/doc/sql.extensions/README.user_management](https://github.com/FirebirdSQL/firebird/raw/master/doc/sql.extensions/README.user_management)
Contributor(s): Alex Peshkoff
* [CORE-6278](http://tracker.firebirdsql.org/browse/CORE-6278): Efficient table scans for DBKEY-based range conditions
Contributor(s): Dmitry Yemanov
* [CORE-6274](http://tracker.firebirdsql.org/browse/CORE-6274): Increase parse speed of long queries
Note(s): Backported into v3.0.6
Contributor(s): Adriano dos Santos Fernandes
* [CORE-6268](http://tracker.firebirdsql.org/browse/CORE-6268): Add methods to set various names (field, relation, etc.) in metadata builder
Reference(s): [/doc/Using_OO_API.html](https://github.com/FirebirdSQL/firebird/raw/master/doc/Using_OO_API.html)
Contributor(s): Alex Peshkoff
* [CORE-6239](http://tracker.firebirdsql.org/browse/CORE-6239): Procedures and EXECUTE BLOCK without RETURNS should not be allowed to use SUSPEND
Contributor(s): Adriano dos Santos Fernandes
* [CORE-6237](http://tracker.firebirdsql.org/browse/CORE-6237): Performance problem when using SRP plugin
Note(s): Backported into v3.0.6
Contributor(s): Alex Peshkoff
* [CORE-6220](http://tracker.firebirdsql.org/browse/CORE-6220): Enable delivery of known to the client key to any connection to the server
Contributor(s): Alex Peshkoff
* [CORE-6219](http://tracker.firebirdsql.org/browse/CORE-6219): Add support for special (inf/nan) values when sorting DECFLOAT values
Contributor(s): Alex Peshkoff
* [CORE-6095](http://tracker.firebirdsql.org/browse/CORE-6095): Extend trace record for COMMIT/ROLLBACK RETAINING to allow chaining of transaction ids
Note(s): Backported into v3.0.6
Contributor(s): Vlad Khorsun
* [CORE-6069](http://tracker.firebirdsql.org/browse/CORE-6069): Show OS-specific error when entrypont is not found in dynamic library
Contributor(s): Alex Peshkoff
* [CORE-6058](http://tracker.firebirdsql.org/browse/CORE-6058): Change behavior of skipped and repeated wall times within time zones
Contributor(s): Adriano dos Santos Fernandes
* [CORE-6049](http://tracker.firebirdsql.org/browse/CORE-6049): Builtin functions converting binary string to hexadecimal representation and vice versa
Reference(s): [/doc/sql.extensions/README.builtin_functions.txt](https://github.com/FirebirdSQL/firebird/raw/master/doc/sql.extensions/README.builtin_functions.txt)
Contributor(s): Alex Peshkoff
* [CORE-6048](http://tracker.firebirdsql.org/browse/CORE-6048): Provide ability to see current state of DB encryption
Reference(s): [/doc/README.monitoring_tables](https://github.com/FirebirdSQL/firebird/raw/master/doc/README.monitoring_tables)
Contributor(s): Alex Peshkoff
* [CORE-6032](http://tracker.firebirdsql.org/browse/CORE-6032): Add DPB properties for time zone bind and decfloat configuration
Contributor(s): Adriano dos Santos Fernandes
* [CORE-6017](http://tracker.firebirdsql.org/browse/CORE-6017): Add transaction info fb\_info\_tra\_snapshot\_number
Contributor(s): Vlad Khorsun
* [CORE-5658](http://tracker.firebirdsql.org/browse/CORE-5658): Execute statement with excess parameters
Reference(s): [/doc/sql.extensions/README.execute_statement2](https://github.com/FirebirdSQL/firebird/raw/master/doc/sql.extensions/README.execute_statement2)
Contributor(s): Vlad Khorsun
* [CORE-5538](http://tracker.firebirdsql.org/browse/CORE-5538): Add ability to backup/restore only those (several) tables which are enumerated as command line argument (pattern)
Reference(s): [/doc/README.gbak](https://github.com/FirebirdSQL/firebird/raw/master/doc/README.gbak)
Contributor(s): Dimitry Sibiryakov
* [CORE-4726](http://tracker.firebirdsql.org/browse/CORE-4726): Implement REcreate user <user_name> password <user_pwd>
Contributor(s): Alex Peshkoff
* [CORE-4579](http://tracker.firebirdsql.org/browse/CORE-4579): Distribute separate header files instead merged one
Contributor(s): Dimitry Sibiryakov
* [CORE-3983](http://tracker.firebirdsql.org/browse/CORE-3983): Ability to authenticate user in "EXECUTE STATEMENT ON EXTERNAL DATA SOURCE" by hash of the current password
Contributor(s): Alex Peshkoff
## Bugfixes
* [CORE-6290](http://tracker.firebirdsql.org/browse/CORE-6290): Hex number used at the end of statement may read invalid memory and produce wrong values or exceptions
Note(s): Backported into v3.0.6
Contributor(s): Adriano dos Santos Fernandes
* [CORE-6283](http://tracker.firebirdsql.org/browse/CORE-6283): isNullable() in message metadata, returned by metadata builder, does not match with datatype set by setType() in metadata builder
Note(s): Backported into v3.0.6
Contributor(s): Alex Peshkoff
* [CORE-6282](http://tracker.firebirdsql.org/browse/CORE-6282): Change type of MON$ATTACHMENTS.MON$IDLE\_TIMER and MON$STATEMENTS.MON$STATEMENT\_TIMER to TIMESTAMP WITH TIME ZONE
Contributor(s): Adriano dos Santos Fernandes
* [CORE-6281](http://tracker.firebirdsql.org/browse/CORE-6281): Invalid timestamp errors with RDB$TIME\_ZONE_UTIL.TRANSITIONS
Contributor(s): Adriano dos Santos Fernandes
* [CORE-6280](http://tracker.firebirdsql.org/browse/CORE-6280): MERGE statement loses parameters in WHEN (NOT) MATCHED clause that will never be matched, crashes server in some situations
Note(s): Backported into v3.0.6
Contributor(s): Adriano dos Santos Fernandes
* [CORE-6272](http://tracker.firebirdsql.org/browse/CORE-6272): Failed attach to a database is not traced
Contributor(s): Alex Peshkoff
* [CORE-6266](http://tracker.firebirdsql.org/browse/CORE-6266): Deleting records from MON$ATTACHMENTS using ORDER BY clause doesn't close the corresponding attachments
Note(s): Backported into v3.0.6
Contributor(s): Dmitry Yemanov
* [CORE-6265](http://tracker.firebirdsql.org/browse/CORE-6265): Mapping rules are destroyed by backup / restore
Note(s): Backported into v3.0.6
Contributor(s): Alex Peshkoff
* [CORE-6264](http://tracker.firebirdsql.org/browse/CORE-6264): GBAK with PIPE to stdout: invalid content if user '-se <host>:service_mgr' command switch
Note(s): Backported into v3.0.6
Contributor(s): Alex Peshkoff
* [CORE-6262](http://tracker.firebirdsql.org/browse/CORE-6262): SHOW DOMAIN/TABLE does not display character set of system objects
Contributor(s): Adriano dos Santos Fernandes
* [CORE-6260](http://tracker.firebirdsql.org/browse/CORE-6260): Warnings are not always displayed in ISQL
Note(s): Backported into v3.0.6
Contributor(s): Alex Peshkoff
* [CORE-6254](http://tracker.firebirdsql.org/browse/CORE-6254): Server crashes when using SET TRANSACTION and ON TRANSACTION START trigger uses EXECUTE STATEMENT against current transaction
Note(s): Backported into v3.0.6
Contributor(s): Vlad Khorsun
* [CORE-6253](http://tracker.firebirdsql.org/browse/CORE-6253): Crash caused by the locked fb_lock file
Note(s): Backported into v3.0.6
Contributor(s): Vlad Khorsun
* [CORE-6252](http://tracker.firebirdsql.org/browse/CORE-6252): UNIQUE CONSTRAINT violation
Note(s): Backported into v3.0.6
Contributor(s): Vlad Khorsun
* [CORE-6251](http://tracker.firebirdsql.org/browse/CORE-6251): Crash when built-in function LEFT or RIGHT is missing its 2nd argument
Note(s): Backported into v3.0.6
Contributor(s): Adriano dos Santos Fernandes
* [CORE-6250](http://tracker.firebirdsql.org/browse/CORE-6250): Signature mismatch when creating package body on identical packaged procedure header
Note(s): Backported into v3.0.6
Contributor(s): Adriano dos Santos Fernandes
* [CORE-6248](http://tracker.firebirdsql.org/browse/CORE-6248): A number of errors when database name is longer than 255 symbols
Contributor(s): Alex Peshkoff
* [CORE-6243](http://tracker.firebirdsql.org/browse/CORE-6243): Regression: v4 Beta 1 rejects POSITION element of v2.5 defined SQL2003 CREATE TRIGGER syntax
Contributor(s): Adriano dos Santos Fernandes
* [CORE-6241](http://tracker.firebirdsql.org/browse/CORE-6241): Values greater than number of days between 01.01.0001 and 31.12.9999 (=3652058) can be added or subtracted from DATE
Contributor(s): Adriano dos Santos Fernandes
* [CORE-6238](http://tracker.firebirdsql.org/browse/CORE-6238): DECFLOAT: subtraction Num1 - Num2 leads to "Decimal float overflow" if Num2 is specified in scientific notation and less than max double (1.7976931348623157e308)
Contributor(s): Alex Peshkoff
* [CORE-6236](http://tracker.firebirdsql.org/browse/CORE-6236): RDB$TIME_ZONE_UTIL package has wrong privilege for PUBLIC
Contributor(s): Adriano dos Santos Fernandes, Dmitry Yemanov
* [CORE-6233](http://tracker.firebirdsql.org/browse/CORE-6233): Wrong dependencies of stored function on view after backup/restore
Note(s): Backported into v3.0.6
Contributor(s): Adriano dos Santos Fernandes
* [CORE-6231](http://tracker.firebirdsql.org/browse/CORE-6231): Server crashes on shutdown of XNET connection to a local database when events have been registered
Note(s): Backported into v3.0.6
Contributor(s): Vlad Khorsun
* [CORE-6230](http://tracker.firebirdsql.org/browse/CORE-6230): Unable to connect with database if security.db reference is removed from databases.conf file
Note(s): Backported into v3.0.6
Contributor(s): Alex Peshkoff
* [CORE-6227](http://tracker.firebirdsql.org/browse/CORE-6227): isc\_info\_svc\_user\_dbpath always returns alias of main security database
Note(s): Backported into v3.0.6
Contributor(s): Alex Peshkoff
* [CORE-6224](http://tracker.firebirdsql.org/browse/CORE-6224): Server crash: re-destruction of the rem_port object
Note(s): Backported into v3.0.6
Contributor(s): Dmitry Kovalenko, Alex Peshkoff
* [CORE-6221](http://tracker.firebirdsql.org/browse/CORE-6221): Incorrect (throw-based) allocFunc for zlib1: memory leak is possible
Note(s): Backported into v3.0.6
Contributor(s): Alex Peshkoff
* [CORE-6218](http://tracker.firebirdsql.org/browse/CORE-6218): COUNT(DISTINCT <DECFLOAT_FIELD>) leads FB to crash when there are duplicate values of this field
Contributor(s): Alex Peshkoff
* [CORE-6217](http://tracker.firebirdsql.org/browse/CORE-6217): [inet.cpp] Dangerous work with pointer: delete ptr; ptr=new ;
Note(s): Backported into v3.0.6
Contributor(s): Dmitry Kovalenko, Alex Peshkoff
* [CORE-6214](http://tracker.firebirdsql.org/browse/CORE-6214): Update outdated tzdata version
Contributor(s): Adriano dos Santos Fernandes
* [CORE-6212](http://tracker.firebirdsql.org/browse/CORE-6212): Authentication plugin on server may get garbage data from client instead empty packet
Contributor(s): Alex Peshkoff
* [CORE-6211](http://tracker.firebirdsql.org/browse/CORE-6211): Command "ISQL -X" can not extract ROLE name when use multi-byte charset for connection
Contributor(s): Adriano dos Santos Fernandes
* [CORE-6208](http://tracker.firebirdsql.org/browse/CORE-6208): Grant lost in security.db after backup/restore cycle
Note(s): Backported into v3.0.6
Contributor(s): Alex Peshkoff
* [CORE-6207](http://tracker.firebirdsql.org/browse/CORE-6207): Modifications needed to complile Firebird.pas under FPC
Contributor(s): Alex Peshkoff
* [CORE-6206](http://tracker.firebirdsql.org/browse/CORE-6206): VARCHAR of insufficient length used for set bind of decfloat to varchar
Contributor(s): Vlad Khorsun
* [CORE-6205](http://tracker.firebirdsql.org/browse/CORE-6205): Generate proper error for UNION DISTINCT with more than 255 columns
Contributor(s): Adriano dos Santos Fernandes
* [CORE-6186](http://tracker.firebirdsql.org/browse/CORE-6186): Original content of column which is involved into ENCRYPT() is displayed as distorted view after this call
Contributor(s): Alex Peshkoff
* [CORE-6181](http://tracker.firebirdsql.org/browse/CORE-6181): Operations when using "SET DECFLOAT BIND BIGINT,n" with result of 11+ digits, fail with "Decimal float invalid operation"
Contributor(s): Alex Peshkoff
* [CORE-6174](http://tracker.firebirdsql.org/browse/CORE-6174): ibase.h is missing from nightly builds
Contributor(s): Adriano dos Santos Fernandes
* [CORE-6170](http://tracker.firebirdsql.org/browse/CORE-6170): Cannot install on CentOS 8 because version of LibTomMath and LibNCurses library
Contributor(s): Alex Peshkoff
* [CORE-6166](http://tracker.firebirdsql.org/browse/CORE-6166): Problems with long object names (> 255 bytes)
Contributor(s): Adriano dos Santos Fernandes
* [CORE-6160](http://tracker.firebirdsql.org/browse/CORE-6160): SUBSTRING of non-text/-blob is described to return NONE character set in DSQL
Contributor(s): Adriano dos Santos Fernandes
* [CORE-6159](http://tracker.firebirdsql.org/browse/CORE-6159): SUBSTRING SIMILAR is described with wrong data type in DSQL
Contributor(s): Adriano dos Santos Fernandes
* [CORE-6130](http://tracker.firebirdsql.org/browse/CORE-6130): Creating backup to stdout using service manager is broken
Note(s): Backported into v3.0.6
Contributor(s): Alex Peshkoff
* [CORE-6116](http://tracker.firebirdsql.org/browse/CORE-6116): Metadata script extracted using ISQL of a database restored from a v2.5.9 backup is invalid when table has COMPUTED BY fields
Note(s): Backported into v3.0.6
Contributor(s): Adriano dos Santos Fernandes
* [CORE-6110](http://tracker.firebirdsql.org/browse/CORE-6110): 64-bit transaction IDs are not stored properly in status vector
Contributor(s): Ilya Eremin
* [CORE-6080](http://tracker.firebirdsql.org/browse/CORE-6080): Attempt to drop existing user randomly fails with "336723990 : record not found for user"
Contributor(s): Vlad Khorsun
* [CORE-6071](http://tracker.firebirdsql.org/browse/CORE-6071): Restore of encrypted backup of database with SQL dialect 1 fails
Contributor(s): Alex Peshkoff
* [CORE-6061](http://tracker.firebirdsql.org/browse/CORE-6061): Building with --with-builtin-tommath doesn't work
Contributor(s): Alex Peshkoff
* [CORE-6056](http://tracker.firebirdsql.org/browse/CORE-6056): Overflow warnings when building some collations
Contributor(s): Adriano dos Santos Fernandes
* [CORE-6046](http://tracker.firebirdsql.org/browse/CORE-6046): Incorrect time zone parsing reads garbage in memory
Contributor(s): Adriano dos Santos Fernandes
* [CORE-6044](http://tracker.firebirdsql.org/browse/CORE-6044): ISQL issues with increased identifier length
Contributor(s): Adriano dos Santos Fernandes
* [CORE-6034](http://tracker.firebirdsql.org/browse/CORE-6034): The original time zone should be set to the current time zone at routine invocation
Contributor(s): Adriano dos Santos Fernandes
* [CORE-6033](http://tracker.firebirdsql.org/browse/CORE-6033): SUBSTRING(CURRENT_TIMESTAMP) does not work
Contributor(s): Adriano dos Santos Fernandes
* [CORE-6019](http://tracker.firebirdsql.org/browse/CORE-6019): Wire compression does not work without MSVC 2010 runtime installation
Contributor(s): Vlad Khorsun
* [CORE-5976](http://tracker.firebirdsql.org/browse/CORE-5976): GBAK multi-database file restore uses wrong minimum number of pages for first database file
Contributor(s): Mark Rotteveel
* [CORE-5972](http://tracker.firebirdsql.org/browse/CORE-5972): External engine trigger crashing server if table have computed field
Note(s): Backported into v3.0.6
Contributor(s): Adriano dos Santos Fernandes
* [CORE-5957](http://tracker.firebirdsql.org/browse/CORE-5957): Bug in SIMILAR TO when adding numeric quantifier as bound for repetetion of expression leads to empty resultset
Contributor(s): Adriano dos Santos Fernandes
* [CORE-5931](http://tracker.firebirdsql.org/browse/CORE-5931): SIMILAR TO does not return result when invalid pattern is used
Contributor(s): Adriano dos Santos Fernandes
* [CORE-5892](http://tracker.firebirdsql.org/browse/CORE-5892): SQL SECURITY DEFINER context is not properly evaluated for monitoring tables
Contributor(s): Roman Simakov
* [CORE-5697](http://tracker.firebirdsql.org/browse/CORE-5697): Conversion from numeric literals to DECFLOAT adds precision that is not originally present
Contributor(s): Alex Peshkoff
* [CORE-5696](http://tracker.firebirdsql.org/browse/CORE-5696): Conversion from zero numeric literals to DECFLOAT results in incorrect value
Contributor(s): Alex Peshkoff
* [CORE-5691](http://tracker.firebirdsql.org/browse/CORE-5691): File description on Firebird executables should be specific
Contributor(s): Vlad Khorsun
* [CORE-5664](http://tracker.firebirdsql.org/browse/CORE-5664): SIMILAR TO is substantially (500-700x) slower than LIKE on trivial pattern matches with VARCHAR data
Contributor(s): Adriano dos Santos Fernandes
* [CORE-5445](http://tracker.firebirdsql.org/browse/CORE-5445): Cannot install on Debian Stretch/Testing because version of LibTomMath library
Contributor(s): Alex Peshkoff
* [CORE-5364](http://tracker.firebirdsql.org/browse/CORE-5364): gfix -online normal <db> (executed in session #1) does not produce error when there is a SYSDBA-owned session #2
Note(s): Backported into v3.0.6
Contributor(s): Alex Peshkoff
* [CORE-4893](http://tracker.firebirdsql.org/browse/CORE-4893): SIMILAR-TO leads FB to crash when matching blob with size > 2Gb to a string literal
Contributor(s): Adriano dos Santos Fernandes
* [CORE-4874](http://tracker.firebirdsql.org/browse/CORE-4874): Infinite "SIMILAR TO" matching
Contributor(s): Adriano dos Santos Fernandes
* [CORE-4739](http://tracker.firebirdsql.org/browse/CORE-4739): Accent insensitive comparison: diacritical letters with DIAGONAL crossing stroke pass only test on EQUALITY to their non-accented forms
Contributor(s): Adriano dos Santos Fernandes
* [CORE-3858](http://tracker.firebirdsql.org/browse/CORE-3858): Very poor performance of SIMILAR TO on some arguments
Contributor(s): Adriano dos Santos Fernandes
* [CORE-3380](http://tracker.firebirdsql.org/browse/CORE-3380): Disable reading from the newly created BLOB
Contributor(s): Adriano dos Santos Fernandes
* [CORE-2251](http://tracker.firebirdsql.org/browse/CORE-2251): GBAK doesn't return error code
Note(s): Backported into v3.0.6
Contributor(s): Alex Peshkoff
# v4.0 Beta 1 (20-Feb-2019)
## New features
* [CORE-5990](http://tracker.firebirdsql.org/browse/CORE-5990): Pool of external connections
Reference(s): [/doc/sql.extensions/README.external_connections_pool](https://github.com/FirebirdSQL/firebird/raw/master/doc/sql.extensions/README.external_connections_pool)
Contributor(s): Vlad Khorsun
* [CORE-5970](http://tracker.firebirdsql.org/browse/CORE-5970): Built-in cryptographic functions
Reference(s): [/doc/sql.extensions/README.builtin_functions.txt](https://github.com/FirebirdSQL/firebird/raw/master/doc/sql.extensions/README.builtin_functions.txt)
Contributor(s): Alex Peshkoff
* [CORE-5953](http://tracker.firebirdsql.org/browse/CORE-5953): Statement level read consistency in read-committed transactions
Reference(s): [/doc/README.read_consistency.md](https://github.com/FirebirdSQL/firebird/raw/master/doc/README.read_consistency.md)
Contributor(s): Nickolay Samofatov, Roman Simakov, Vlad Khorsun
* [CORE-5951](http://tracker.firebirdsql.org/browse/CORE-5951): Add support of batch insert and update operations
Reference(s): [/doc/Using_OO_API.html](https://github.com/FirebirdSQL/firebird/raw/master/doc/Using_OO_API.html)
Contributor(s): Alex Peshkoff
* [CORE-5808](http://tracker.firebirdsql.org/browse/CORE-5808): Support backup of encrypted databases
Contributor(s): Alex Peshkoff
* [CORE-5768](http://tracker.firebirdsql.org/browse/CORE-5768): Implement FILTER-clause for aggregate functions
Contributor(s): Adriano dos Santos Fernandes
* [CORE-5620](http://tracker.firebirdsql.org/browse/CORE-5620): Add builtin functions FIRST_DAY and LAST_DAY
Reference(s): [/doc/sql.extensions/README.builtin_functions.txt](https://github.com/FirebirdSQL/firebird/raw/master/doc/sql.extensions/README.builtin_functions.txt)
Contributor(s): Adriano dos Santos Fernandes
* [CORE-5536](http://tracker.firebirdsql.org/browse/CORE-5536): Connection compressed/encrypted status in MON$ATTACHMENTS table
Reference(s): [/doc/README.monitoring_tables](https://github.com/FirebirdSQL/firebird/raw/master/doc/README.monitoring_tables)
Contributor(s): Alex Peshkoff
* [CORE-2022](http://tracker.firebirdsql.org/browse/CORE-2022): Built-in logical replication
Reference(s): [/doc/README.replication.md](https://github.com/FirebirdSQL/firebird/raw/master/doc/README.replication.md)
Contributor(s): Dmitry Yemanov
* [CORE-909](http://tracker.firebirdsql.org/browse/CORE-909): Ability to retrieve current UTC/GMT timestamp
Reference(s): [/doc/sql.extensions/README.time_zone.md](https://github.com/FirebirdSQL/firebird/raw/master/doc/sql.extensions/README.time_zone.md)
Contributor(s): Adriano dos Santos Fernandes
* [CORE-694](http://tracker.firebirdsql.org/browse/CORE-694): Support for time zones
Reference(s): [/doc/sql.extensions/README.time_zone.md](https://github.com/FirebirdSQL/firebird/raw/master/doc/sql.extensions/README.time_zone.md)
Contributor(s): Adriano dos Santos Fernandes
## Improvements
* [CORE-5973](http://tracker.firebirdsql.org/browse/CORE-5973): Handling FP overflow in DOUBLE PRECISION value when converting from DECFLOAT
Contributor(s): Alex Peshkoff
* [CORE-5954](http://tracker.firebirdsql.org/browse/CORE-5954): Garbage collection in intermediate record versions
Reference(s): [/doc/README.read_consistency.md](https://github.com/FirebirdSQL/firebird/raw/master/doc/README.read_consistency.md)
Contributor(s): Nickolay Samofatov, Roman Simakov, Vlad Khorsun
* [CORE-5952](http://tracker.firebirdsql.org/browse/CORE-5952): Enhance restore performance of GBAK using batch API
Contributor(s): Alex Peshkoff
* [CORE-5948](http://tracker.firebirdsql.org/browse/CORE-5948): Make WIN_SSPI plugin produce keys for wirecrypt plugin
Note(s): Backported into v3.0.5
Contributor(s): Alex Peshkoff
* [CORE-5928](http://tracker.firebirdsql.org/browse/CORE-5928): Make it possible for AuthClient plugin to access authentication block from DPB
Note(s): Backported into v3.0.5
Contributor(s): Alex Peshkoff
* [CORE-5921](http://tracker.firebirdsql.org/browse/CORE-5921): Provide information about Global Commit Number, Commit Number of currently used database snapshot (if any) and Commit Numbers assigned to the committed transactions
Reference(s): [/doc/sql.extensions/README.builtin_functions.txt](https://github.com/FirebirdSQL/firebird/raw/master/doc/sql.extensions/README.builtin_functions.txt)
Contributor(s): Vlad Khorsun
* [CORE-5887](http://tracker.firebirdsql.org/browse/CORE-5887): Allow the use of management statements in PSQL blocks
Contributor(s): Adriano dos Santos Fernandes
* [CORE-5883](http://tracker.firebirdsql.org/browse/CORE-5883): Services version 1 cleanup
Contributor(s): Alex Peshkoff
* [CORE-5874](http://tracker.firebirdsql.org/browse/CORE-5874): Provide name of read-only column incorrectly referenced in UPDATE ... SET xxx
Contributor(s): Adriano dos Santos Fernandes
* [CORE-5779](http://tracker.firebirdsql.org/browse/CORE-5779): Add support for riscv64
Contributor(s): Richard Jones
* [CORE-5770](http://tracker.firebirdsql.org/browse/CORE-5770): User who is allowed to manage other users must have this ability WITHOUT need to grant him RDB$ADMIN role
Contributor(s): Alex Peshkoff
* [CORE-5741](http://tracker.firebirdsql.org/browse/CORE-5741): Replace word "fixing" with "adjusting" in GBAK output
Note(s): Backported into v3.0.5
Contributor(s): Alex Peshkoff
* [CORE-5718](http://tracker.firebirdsql.org/browse/CORE-5718): Make TempCacheLimit setting database-wise
Contributor(s): Dmitry Yemanov
* [CORE-5705](http://tracker.firebirdsql.org/browse/CORE-5705): Store precision of DECFLOAT in RDB$FIELDS
Contributor(s): Alex Peshkoff
* [CORE-5647](http://tracker.firebirdsql.org/browse/CORE-5647): Increase number of formats/versions of views from 255 to 32K
Contributor(s): Adriano dos Santos Fernandes
* [CORE-5606](http://tracker.firebirdsql.org/browse/CORE-5606): Add expression index name to exception message if computation failed
Contributor(s): Adriano dos Santos Fernandes
* [CORE-4529](http://tracker.firebirdsql.org/browse/CORE-4529): Allow to use index when GROUP BY on field which has DESCENDING index
Contributor(s): Dmitry Yemanov
* [CORE-4409](http://tracker.firebirdsql.org/browse/CORE-4409): Enhancement in precision of calculations with NUMERIC/DECIMAL
Contributor(s): Alex Peshkoff
* [CORE-3808](http://tracker.firebirdsql.org/browse/CORE-3808): Provide ability to return all columns using RETURNING clause
Reference(s): [/doc/sql.extensions/README.returning](https://github.com/FirebirdSQL/firebird/raw/master/doc/sql.extensions/README.returning)
Contributor(s): Adriano dos Santos Fernandes
## Bugfixes
* [CORE-5995](http://tracker.firebirdsql.org/browse/CORE-5995): Creator user name is empty in user trace sessions
Note(s): Backported into v3.0.5
Contributor(s): Vlad Khorsun
* [CORE-5993](http://tracker.firebirdsql.org/browse/CORE-5993): When creation of audit log file fails, there is no error message in firebird.log
Note(s): Backported into v3.0.5
Contributor(s): Vlad Khorsun
* [CORE-5991](http://tracker.firebirdsql.org/browse/CORE-5991): Trace could not work correctly with quoted file names in trace configurations
Note(s): Backported into v3.0.5
Contributor(s): Vlad Khorsun
* [CORE-5989](http://tracker.firebirdsql.org/browse/CORE-5989): iconv / libiconv 1.15 vs libc / libiconv_open | common/isc_file.cpp
Note(s): Backported into v3.0.5
Contributor(s): Alex Peshkoff
* [CORE-5986](http://tracker.firebirdsql.org/browse/CORE-5986): Incorrect evaluation of NULL IS [NOT] {FALSE | TRUE}
Note(s): Backported into v3.0.5
Contributor(s): Adriano dos Santos Fernandes
* [CORE-5985](http://tracker.firebirdsql.org/browse/CORE-5985): Regression: ROLE does not passed in ES/EDS (specifying it in the statement is ignored)
Note(s): Backported into v3.0.5
Contributor(s): Alex Peshkoff
* [CORE-5982](http://tracker.firebirdsql.org/browse/CORE-5982): Error "read permission for BLOB field", when it's an input/output procedure's parameter
Note(s): Backported into v3.0.5
Contributor(s): Dmitriy Starodubov
* [CORE-5980](http://tracker.firebirdsql.org/browse/CORE-5980): Firebird crashes due to concurrent operations with expression indices
Note(s): Backported into v3.0.5
Contributor(s): Vlad Khorsun
* [CORE-5974](http://tracker.firebirdsql.org/browse/CORE-5974): Wrong result of select distinct with decfload/timezone/collated column
Contributor(s): Adriano dos Santos Fernandes
* [CORE-5972](http://tracker.firebirdsql.org/browse/CORE-5972): External engine trigger crashing server if table have computed field
Contributor(s): Adriano dos Santos Fernandes
* [CORE-5965](http://tracker.firebirdsql.org/browse/CORE-5965): FB3 optimizer chooses less efficient plan than FB2.5 optimizer
Note(s): Backported into v3.0.5
Contributor(s): Dmitry Yemanov
* [CORE-5959](http://tracker.firebirdsql.org/browse/CORE-5959): Firebird returns wrong time after changes of time zone
Note(s): Backported into v3.0.5
Contributor(s): Vlad Khorsun
* [CORE-5955](http://tracker.firebirdsql.org/browse/CORE-5955): Unable to init binreloc with ld >= 2.31
Note(s): Backported into v3.0.5
Contributor(s): Roman Simakov
* [CORE-5950](http://tracker.firebirdsql.org/browse/CORE-5950): Deadlock when attaching to bugchecked database
Note(s): Backported into v3.0.5
Contributor(s): Alex Peshkoff
* [CORE-5943](http://tracker.firebirdsql.org/browse/CORE-5943): Server crashes preparing a query with both DISTINCT/ORDER BY and non-field expression in the select list
Note(s): Backported into v3.0.5
Contributor(s): Dmitry Yemanov
* [CORE-5934](http://tracker.firebirdsql.org/browse/CORE-5934): gpre_boot fails to link using cmake, undefined reference 'dladdr' and 'dlerror'
Note(s): Backported into v3.0.5
Contributor(s): Alex Peshkoff
* [CORE-5930](http://tracker.firebirdsql.org/browse/CORE-5930): Bugcheck "incorrect snapshot deallocation - too few slots"
Contributor(s): Vlad Khorsun
* [CORE-5927](http://tracker.firebirdsql.org/browse/CORE-5927): With some non-standard authentication plugins providing correct crypt key wire anyway remains not encrypted
Note(s): Backported into v3.0.5
Contributor(s): Alex Peshkoff
* [CORE-5926](http://tracker.firebirdsql.org/browse/CORE-5926): Attempt to create mapping with non-ASCII user name which is encoded in SINGLE-BYTE codepage (WIN1251) leads to 'Malformed string' error
Note(s): Backported into v3.0.5
Contributor(s): Alex Peshkoff
* [CORE-5918](http://tracker.firebirdsql.org/browse/CORE-5918): Memory pool statistics is not accurate
Note(s): Backported into v3.0.5
Contributor(s): Alex Peshkoff
* [CORE-5907](http://tracker.firebirdsql.org/browse/CORE-5907): Regression: can not launch trace if its 'database' section contains regexp pattern with curvy brackets to enclose quantifier
Note(s): Backported into v3.0.5
Contributor(s): Alex Peshkoff
* [CORE-5896](http://tracker.firebirdsql.org/browse/CORE-5896): NOT NULL constraint is not synchronized after rename column
Contributor(s): Adriano dos Santos Fernandes
* [CORE-5871](http://tracker.firebirdsql.org/browse/CORE-5871): Incorrect caching of the subquery result (procedure call) in independent queries
Contributor(s): Adriano dos Santos Fernandes
* [CORE-5862](http://tracker.firebirdsql.org/browse/CORE-5862): Varchar computed column without explicit type does not populate RDB$CHARACTER_LENGTH
Contributor(s): Adriano dos Santos Fernandes
* [CORE-5861](http://tracker.firebirdsql.org/browse/CORE-5861): GRANT OPTION is not checked for new object
Contributor(s): Roman Simakov
* [CORE-5855](http://tracker.firebirdsql.org/browse/CORE-5855): Firebird 4.0 cannot backup DB with generators which contains space in the names
Contributor(s): Alex Peshkoff
* [CORE-5800](http://tracker.firebirdsql.org/browse/CORE-5800): After backup/restore the indexes by expression on computed field are not working properly
Note(s): Backported into v3.0.5
Contributor(s): Dmitry Yemanov
* [CORE-5795](http://tracker.firebirdsql.org/browse/CORE-5795): ORDER BY clause on compound index may disable usage of other indices
Note(s): Backported into v3.0.5
Contributor(s): Dmitry Yemanov
* [CORE-5750](http://tracker.firebirdsql.org/browse/CORE-5750): Date-time parsing is very weak
Contributor(s): Adriano dos Santos Fernandes
* [CORE-5728](http://tracker.firebirdsql.org/browse/CORE-5728): Field subtype of DEC_FIXED columns not returned by isc_info_sql_sub_type
Contributor(s): Alex Peshkoff
* [CORE-5726](http://tracker.firebirdsql.org/browse/CORE-5726): Unclear error message when inserting value exceeding max of DEC_FIXED decimal
Contributor(s): Alex Peshkoff
* [CORE-5717](http://tracker.firebirdsql.org/browse/CORE-5717): Reject non-constant date/time/timestamp literals
Contributor(s): Adriano dos Santos Fernandes
* [CORE-5710](http://tracker.firebirdsql.org/browse/CORE-5710): Datatype declaration DECFLOAT without precision should use a default precision
Contributor(s): Alex Peshkoff
* [CORE-5700](http://tracker.firebirdsql.org/browse/CORE-5700): DECFLOAT underflow should yield zero instead of an error
Contributor(s): Alex Peshkoff
* [CORE-5699](http://tracker.firebirdsql.org/browse/CORE-5699): DECFLOAT should not throw exceptions when +/-NaN, +/-sNaN and +/-Infinity is used in comparisons
Contributor(s): Alex Peshkoff
* [CORE-5657](http://tracker.firebirdsql.org/browse/CORE-5657): Various UDF-related security vulnerabilities
Contributor(s): Alex Peshkoff
* [CORE-5646](http://tracker.firebirdsql.org/browse/CORE-5646): Parse error when compiling a statement causes memory leak until attachment is disconnected
Contributor(s): Adriano dos Santos Fernandes
* [CORE-5639](http://tracker.firebirdsql.org/browse/CORE-5639): Mapping rule using WIN_SSPI plugin: windows user group conversion to firebird role does not work
Contributor(s): Alex Peshkoff
* [CORE-5637](http://tracker.firebirdsql.org/browse/CORE-5637): string right truncation on restore of security db
Contributor(s): Alex Peshkoff
* [CORE-5612](http://tracker.firebirdsql.org/browse/CORE-5612): Gradual slowdown of view operations (create, recreate or drop)
Contributor(s): Dmitry Yemanov
* [CORE-5611](http://tracker.firebirdsql.org/browse/CORE-5611): Higher memory consumption for prepared statements
Contributor(s): Adriano dos Santos Fernandes
* [CORE-5593](http://tracker.firebirdsql.org/browse/CORE-5593): System function RDB$ROLE_IN_USE cannot take long role names
Contributor(s): Alex Peshkoff
* [CORE-5518](http://tracker.firebirdsql.org/browse/CORE-5518): Firebird UDF string2blob() may allow remote code execution
Contributor(s): Alex Peshkoff
* [CORE-5480](http://tracker.firebirdsql.org/browse/CORE-5480): SUBSTRING startposition smaller than 1 should be allowed
Contributor(s): Adriano dos Santos Fernandes
* [CORE-5395](http://tracker.firebirdsql.org/browse/CORE-5395): Invalid data type for negation (minus operator)
Note(s): Backported into v3.0.5
Contributor(s): Adriano dos Santos Fernandes, Dmitry Yemanov
* [CORE-5118](http://tracker.firebirdsql.org/browse/CORE-5118): Indices on computed fields are broken after restore (all keys are NULL)
Note(s): Backported into v3.0.5
Contributor(s): Dmitry Yemanov
* [CORE-5070](http://tracker.firebirdsql.org/browse/CORE-5070): Compound index cannot be used for filtering in some ORDER/GROUP BY queries
Note(s): Backported into v3.0.5
Contributor(s): Dmitry Yemanov
* [CORE-1592](http://tracker.firebirdsql.org/browse/CORE-1592): Altering procedure parameters can lead to unrestorable database
Contributor(s): Adriano dos Santos Fernandes
# v4.0 Alpha 1 (23-Aug-2017)
## New features
* [CORE-5568](http://tracker.firebirdsql.org/browse/CORE-5568): SQL SECURITY feature
Reference(s): [/doc/sql.extensions/README.sql_security.txt](https://github.com/FirebirdSQL/firebird/raw/master/doc/sql.extensions/README.sql_security.txt)
Contributor(s): Roman Simakov
* [CORE-5525](http://tracker.firebirdsql.org/browse/CORE-5525): Create high-precision floating point datatype named DECFLOAT
Reference(s): [/doc/sql.extensions/README.data_types](https://github.com/FirebirdSQL/firebird/raw/master/doc/sql.extensions/README.data_types)
Contributor(s): Alex Peshkoff
* [CORE-5488](http://tracker.firebirdsql.org/browse/CORE-5488): Timeouts for running SQL statements and idle connections
Reference(s): [/doc/README.session_idle_timeouts](https://github.com/FirebirdSQL/firebird/raw/master/doc/README.session_idle_timeouts), [/doc/README.statement_timeouts](https://github.com/FirebirdSQL/firebird/raw/master/doc/README.statement_timeouts)
Contributor(s): Vlad Khorsun
* [CORE-5463](http://tracker.firebirdsql.org/browse/CORE-5463): Support DEFAULT context value in INSERT, UPDATE, MERGE and UPDATE OR INSERT statements
Contributor(s): Adriano dos Santos Fernandes
* [CORE-5449](http://tracker.firebirdsql.org/browse/CORE-5449): Support GENERATED ALWAYS identity columns and OVERRIDE clause
Reference(s): [doc/sql.extensions/README.identity_columns.txt](https://github.com/FirebirdSQL/firebird/raw/master/doc/sql.extensions/README.identity_columns.txt)
Contributor(s): Adriano dos Santos Fernandes
* [CORE-5346](http://tracker.firebirdsql.org/browse/CORE-5346): Named windows
Reference(s): [doc/sql.extensions/README.window_functions.md](https://github.com/FirebirdSQL/firebird/raw/master/doc/sql.extensions/README.window_functions.md)
Contributor(s): Adriano dos Santos Fernandes
* [CORE-5343](http://tracker.firebirdsql.org/browse/CORE-5343): Allow particular DBA privileges to be transferred to regular users
Reference(s): [doc/sql.extensions/README.builtin_functions.txt](https://github.com/FirebirdSQL/firebird/raw/master/doc/sql.extensions/README.builtin_functions.txt), [doc/sql.extensions/README.ddl](https://github.com/FirebirdSQL/firebird/raw/master/doc/sql.extensions/README.ddl.txt)
Contributor(s): Alex Peshkoff
* [CORE-3647](http://tracker.firebirdsql.org/browse/CORE-3647): Frames for window functions
Reference(s): [doc/sql.extensions/README.window_functions.md](https://github.com/FirebirdSQL/firebird/raw/master/doc/sql.extensions/README.window_functions.md)
Contributor(s): Adriano dos Santos Fernandes
* [CORE-2762](http://tracker.firebirdsql.org/browse/CORE-2762): New built-in function to check whether some role is implicitly active
Reference(s): [doc/sql.extensions/README.cumulative_roles.txt](https://github.com/FirebirdSQL/firebird/raw/master/doc/sql.extensions/README.cumulative_roles.txt)
Contributor(s): Roman Simakov
* [CORE-1815](http://tracker.firebirdsql.org/browse/CORE-1815): Ability to grant role to another role
Reference(s): [doc/sql.extensions/README.cumulative_roles.txt](https://github.com/FirebirdSQL/firebird/raw/master/doc/sql.extensions/README.cumulative_roles.txt)
Contributor(s): Roman Simakov
* [CORE-1688](http://tracker.firebirdsql.org/browse/CORE-1688): More ANSI SQL:2003 window functions (PERCENK_RANK, CUME_DIST, NTILE)
Reference(s): [doc/sql.extensions/README.window_functions.md](https://github.com/FirebirdSQL/firebird/raw/master/doc/sql.extensions/README.window_functions.md)
Contributor(s): Hajime Nakagami, Adriano dos Santos Fernandes
* [CORE-751](http://tracker.firebirdsql.org/browse/CORE-751): Implicitly active roles (and their permissions summarized)
Contributor(s): Roman Simakov
## Improvements
* [CORE-5431](http://tracker.firebirdsql.org/browse/CORE-5431): Support for DROP IDENTITY clause
Reference(s): [doc/sql.extensions/README.identity_columns.txt](https://github.com/FirebirdSQL/firebird/raw/master/doc/sql.extensions/README.identity_columns.txt)
Contributor(s): Adriano dos Santos Fernandes
* [CORE-5430](http://tracker.firebirdsql.org/browse/CORE-5430): Support for INCREMENT option in identity columns
Reference(s): [doc/sql.extensions/README.identity_columns.txt](https://github.com/FirebirdSQL/firebird/raw/master/doc/sql.extensions/README.identity_columns.txt)
Contributor(s): Adriano dos Santos Fernandes
* [CORE-5380](http://tracker.firebirdsql.org/browse/CORE-5380): Allow subroutines to call others subroutines and themself recursively
Reference(s): [doc/sql.extensions/README.subroutines.txt](https://github.com/FirebirdSQL/firebird/raw/master/doc/sql.extensions/README.subroutines.txt)
Contributor(s): Adriano dos Santos Fernandes
* [CORE-5238](http://tracker.firebirdsql.org/browse/CORE-5238): Replace xinetd support with the native listener
Contributor(s): Alex Peshkoff
* [CORE-5119](http://tracker.firebirdsql.org/browse/CORE-5119): Support autocommit mode in SET TRANSACTION statement
Contributor(s): Dmitry Yemanov
* [CORE-5064](http://tracker.firebirdsql.org/browse/CORE-5064): Add datatypes (VAR)BINARY(n) and BINARY VARYING(n) as aliases for (VAR)CHAR(n) CHARACTER SET OCTETS
Contributor(s): Dimitry Sibiryakov
* [CORE-4436](http://tracker.firebirdsql.org/browse/CORE-4436): Support for different hash algorithms in HASH system function
Reference(s): [doc/sql.extensions/README.builtin_functions.txt](https://github.com/FirebirdSQL/firebird/raw/master/doc/sql.extensions/README.builtin_functions.txt)
Contributor(s): Adriano dos Santos Fernandes
* [CORE-2557](http://tracker.firebirdsql.org/browse/CORE-2557): Grants on MON$ tables
Contributor(s): Alex Peshkoff
* [CORE-2216](http://tracker.firebirdsql.org/browse/CORE-2216): NBackup as online dump
Contributor(s): Roman Simakov, Vlad Khorsun
* [CORE-2192](http://tracker.firebirdsql.org/browse/CORE-2192): Extend maximum database page size to 32KB
Contributor(s): Dmitry Yemanov
* [CORE-2040](http://tracker.firebirdsql.org/browse/CORE-2040): Allow exception name and possibly exception text to be determined within a "WHEN ANY" error handling block
Reference(s): [doc/sql.extensions/README.context_variables](https://github.com/FirebirdSQL/firebird/raw/master/doc/sql.extensions/README.context_variables)
Contributor(s): Dmitry Yemanov
* [CORE-1132](http://tracker.firebirdsql.org/browse/CORE-1132): Exception context in PSQL exception handlers
Reference(s): [doc/sql.extensions/README.context_variables](https://github.com/FirebirdSQL/firebird/raw/master/doc/sql.extensions/README.context_variables)
Contributor(s): Dmitry Yemanov
* [CORE-749](http://tracker.firebirdsql.org/browse/CORE-749): Increase maximum length of object names to 63 characters
Contributor(s): Adriano dos Santos Fernandes
## Bugfixes
* [CORE-5545](http://tracker.firebirdsql.org/browse/CORE-5545): Wrong syntax with CREATE TRIGGER ... ON <table> used with POSITION
Contributor(s): Adriano dos Santos Fernandes
* [CORE-5454](http://tracker.firebirdsql.org/browse/CORE-5454): INSERT into updatable view without explicit field list failed
Contributor(s): Adriano dos Santos Fernandes
* [CORE-5408](http://tracker.firebirdsql.org/browse/CORE-5408): Result of boolean expression can not be concatenated with string literal
Contributor(s): Adriano dos Santos Fernandes
* [CORE-5404](http://tracker.firebirdsql.org/browse/CORE-5404): Inconsistent column/line references when PSQL definitions return errors
Contributor(s): Adriano dos Santos Fernandes
* [CORE-5237](http://tracker.firebirdsql.org/browse/CORE-5237): Invalid handling of dot (.) and asterisk (*) in config file name and path for include clause
Contributor(s): Dimitry Sibiryakov
* [CORE-5223](http://tracker.firebirdsql.org/browse/CORE-5223): Double dots are prohibited in file names if access is restricted to a list of directories
Contributor(s): Dimitry Sibiryakov
* [CORE-5141](http://tracker.firebirdsql.org/browse/CORE-5141): Field definition allows several NOT NULL clauses
Contributor(s): Dimitry Sibiryakov
* [CORE-4985](http://tracker.firebirdsql.org/browse/CORE-4985): Non-privileged user can implicitly count records in a restricted table
Contributor(s): Dmitry Yemanov
* [CORE-4701](http://tracker.firebirdsql.org/browse/CORE-4701): Index and blob garbage collection don't take into accout data in undo log
Contributor(s): Dimitry Sibiryakov
* [CORE-4483](http://tracker.firebirdsql.org/browse/CORE-4483): Changed data not visible in WHEN-section if exception occured inside SP that has been called from this code
Contributor(s): Dimitry Sibiryakov
* [CORE-4424](http://tracker.firebirdsql.org/browse/CORE-4424): Rollback to wrong savepoint if several exception handlers on the same level are executed
Contributor(s): Dimitry Sibiryakov
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