Data pages of newly gbak restored databases should be marked as "swept"

Error writing to TIMESTAMP/TIME WITH TIME ZONE array

Support for WHEN NOT MATCHED BY SOURCE for MERGE statement

gbak discards replica mode

Allow parenthesized query expression for standard-compliance

Getting "records fetched" for functions/procedures in trace

Add session time zone to system context

MON$ATTACHMENTS.MON$TIMESTAMP is incorrect when DefaultTimeZone is configured with time zone different from the server's default

Add built-in functions UNICODE_CHAR and UNICODE_VAL to convert between Unicode code point and character

When the statement timeout is set, it causes the lock manager to delay reporting deadlocks until timeout is expired

Regression in FB 4.x : "Unexpected end of command" with incorrect line/column info

Integer hex-literals: support for INT128

BASE64_ENCODE and HEX_ENCODE can exceed maximum widths for VARCHAR

Illegal output length in base64/hex_encode/decode functions

Correct error message for DROP VIEW

Deleting multiple rows from a view with triggers may cause triggers to fire just once

Crash occurs when use SIMILAR TO ...

Create user statement fails with SQLSTATE = HY000 when using DataTypeCompatibility

Domain CHECK-expression can be ignored when we DROP objects that are involved in it

SIMILAR TO does not use index when pattern starts with non-wildcard character (in contrary to LIKE)

Significant performance regression of SIMILAR TO and SUBSTRING(SIMILAR) when pattern is taken from variable (rather than directly specified)

Invalid SIMILAR TO patterns may lead memory read beyond string limits

Unable to create ICU-based collation with locale keywords

Performance effect of applying 'DISABLE-COMPRESSIONS=1' in UNICODE collation for LOCALE=cs_CZ

Allow attribute DISABLE-COMPRESSIONS in UNICODE collations

GTT's pages are not released while dropping it

SQL SECURITY DEFINER has inconsistent behaviour if the object owner is non-privileged

Incorrect singleton error with MERGE and RETURNING

grant references not working

DATEDIFF does not support fractional value for MILLISECOND

Problems with access to RDB$CONFIG table for non-privileged user when he has grant on execution of SP which has necessary access rights (created by SYSDBA with SQL DEFINER clause)

Results of negation must be the same for each datatype (smallint / int /bigint / int128) when argument is least possible value for this type

Server crashes while fetching from a scrollable cursor in PSQL

International characters in table or alias names causes queries of MON$STATEMENTS to fail

Incorrect releasing of user savepoint (older savepoints become inaccessible)

Fetching from a scrollable cursor may overwrite user-specified buffer and corrupt memory

Creation of expression index does not release its statement correctly

PSQL and SQL profiler

Improve performance of CURRENT_TIME

Incorrect indexed lookup of strings when the last keys characters are part of collated contractions and there is multi-segment insensitive descending index

Chained JOIN .. USING across the same column names may be optimized badly

Inconsistent RDB$USER_PRIVILEGES after dropping identity

Cannot alter SQL SECURITY on package

Optimizer regression: bad plan (HASH instead of JOIN) is chosen for some inner joins

Wrong select result in case of special sort character

Multi-way hash/merge joins are impossible for expression-based keys

Incorrect transliteration of field names in constraint violation errors

Incorrect error "Invalid token. Malformed string." with union + blob + non utf8 varchar

Wrong error message - "string right truncation. expected length NN, actual NN."

Nbackup RDB$BACKUP_HISTORY cleanup

Trace: provide performance statistics for DDL statements

Dependencies of subroutines are not preserved after backup restore

Dependencies of subroutines are not preserved after backup restore

Connect using XNET protocol shows different exception if DB is in shutdown state (comparing to INET)

Inconsistent conversion of non-TEXT blobs in BLOB_APPEND

Support for partial indices

Firebird 4 literal containing crashes server

Cost-based choice between nested loop join and hash join

BLOB_APPEND with existing blob accepts malformed string

Performance improvement for BLOB copying

AV when compiling stored procedure

Regression: bad plan in FB 3.0.9+ (correct in FB 3.0.8)

Crash or error in SUBSTRING()'s regexp parser with UTF-8 encoding

Differences in field metadata descriptions between Firebird 2.5 and Firebird 4

Add COMPILE trace events - ability to see execution plan of every PSQL statement.

Simple SQL crashes firebird: select cast(rdb$db_key as integer) from rdb$database

Result of blob_append(null, null) (literal '<null>') is not shown

Invalid real to string cast.

Firebird performance issue - non necessary index reads

Precision of standalone unit may differ from packaged one in SQL dialect 1

Successful compiling of procedure with wrong PLAN(s) used by some of its statement(s)

Wrong name in error message when unknown namespace is passed into RDB$SET_CONTEXT()

Firebird 5 profiler error with subselects

AV in engine when attaching to the non-existing database and non-SYSDBA trace session is running

Derived table syntax allows dangling "AS"

RELEASE SAVEPOINT ONLY works incorrectly

Conversion of text with '#x00' to DECFLOAT without errors.