HeidiSQL v12.21
12.21 - 2026-08-03
โฐ๏ธ Features
- Create opt-in option for displaying columns in database tree - (f492bed)
- Enhance order of items in completion proposal, so exact matches are at the top - (c1b817b)
- For keyboard navigation on the completion proposal, wrap around the item list - (db952f8)
- First attempt to create a user manager for PostgreSQL - (f0d7103)
- Show index icons on columns in tree, and the data type text color - (e6e90aa)
- Auto-adjust width of various combo boxes - (ca9b748)
- Show table columns in tree, as child nodes - (0e20e70)
- Query size of all indexes in one query - (c5201eb)
- Display size of each index and paint a color bar behind it - (48a93d2)
- Make custom proposal popup interval effective - (500c529)
- Icons, colors and padding in completion proposal - (3d1254d)
๐ Bug Fixes
- (ui) Exchange icon for "column" and its variants for add, delete, edit - (08558f9)
- Sporadic crash in DBtreePaintText with columns - (f76c54f)
- Enable foreign key drop down on grid field in MS SQL mode - (9f83561)
- Remove column nodes from tree in table tools dialog - (b09823e)
- Empty command line part for sshpass on FreeBSD - (ed881b3)
- Handle MONEY column types as float - (67521d4)
- Hang and wrong check states in data grid column selection on macOS - (6c5b66c)
- Invalid folder path for SQL export cannot be created if it contains a duplicated path delimiter - (4555274)
- Various CVEs regarding libssl and libcrypto - (379d28a)
- Context menu does not appear at right-click on a tree node text - (8befce3)
- Crash when opening textfile import dialog, with 0 tables in database - (83c4947)
- Crash when cancelling session manager while a session rename is active - (1da8683)
- Prevent crashes from SetFocus on various controls - (bf46821)
- Data grid header keeps showing previous table's columns on macOS - (255695d)
- Prevent SQL error "Property 'MS_Description' already exists" - (ac50b73)
- Enhance anchors on some of the table editors controls - (bfebd9e)
- Bad width of collation combo box - (a90f73c)
- File > "New window" does nothing on macOS - (0583a4e)
- Still wrong proposal background color in dark mode - (e62c47f)
- Wrong proposal background color in dark mode - (eec978c)
- Crash when opening a table, due to using the TCanvas member of a not yet visible form or frame - (bfe29c1)
- Give the trees and grids more height for the header - (568098a)
- Widen many TSpinEditEx instances to either 80px or align them with neighbor controls - (5964be6)
- Some trees have their own OnContextMenu logic set at design time, do not overwrite - (7c2870a)
- Work around unused Header.PopupMenu menu on Linux when a tree has a PopupMenu - (2030a91)
- DPI related scale glitches, mainly on completion proposal - (905b126)
- Do not paint size bar in nodes of level 2, and do not show "-" text there neither - (3e678bc)
- Bad text color for selected item in proposal - (1c46db7)
- Propose items when editor already contains a leading backtick quote - (8f12b3e)
- Missing support for custom keyboard shortcut for executing completion popup - (79f1d38)
- Glitches with padding in completion proposal, and non-restored width - (cf67d11)
- EXPLAIN actions either disabled or non-working for PostgreSQL and SQLite - (2572681)
- Hanging in a loop over result nodes by right-click on query result - (bc8f903)
- Detect release version string from Lazarus project file, and insert into Contents/Info.plist of macOS bundle - (2171b58)
- Crash during refresh on disconnected session - (0b0106d)
- When parsing the command line, make use of Application.GetOptionValue and friends, instead of ParamStr(x) with regular expressions - (f436354)
- Use default library of connection when the one from a stored session contains an invalid path/file - (51023c3)
- Refresh session tree after import per More > Import settings file - (cfca46f)
- CAS(x AS CHAR) not supported by MySQL below v4.0.2 - (e9e5263)
- Always enable release link label on update check dialog, which points to the general download page - (2d475d2)
- Prepend database name to the trigger name at the correct position, when newer MariaDB versions use IF NOT EXISTS - (27a3a51)
๐ Refactor
- Prefer Delphi friendly SysUtils.PathDelim over System.DirectorySeparator - (84104d0)
โก Performance
- Avoid full string scans in StrEllipsis - (32f3bd0)
โ๏ธ Miscellaneous Tasks
- Update SQLite libraries to v3.53.4 - (7bfd91d)
- Ignore auto-created IntelliJ project files - (64613cf)
- Prefer macos-15 over macos-15-arm64, due to better availability of the Intel runners - (c3be9d4)
- Stick to macOS 15, because the FPC package is only officially qualified up to macOS 11 and uses a package format Apple has tightened in newer releases, so it no longer installs on the macos 26 runners. - (0c969da)
Cleanup
- TbsSeparator TToolButton's now seem to have a default width of 8px (was 6px at some point), and TStatusBar's height now has a default height of 23px (was 28px) - (660c82d)
Localize
- Update compiled .mo translation files - (3480cf4)
Note
For a list of all the changes up to date, please read CHANGELOG.md.