Download HeidiSQL v12.20, released on 22 Jun 2026
Installation notes
- Compatibility notes
- Windows:
- Microsoft Visual C++ Redistributable libraries are required for some drivers. Download and install them from Microsoft if you get errors saying "vcruntimeXYZ.dll missing".
- A preview of v13 can be downloaded here (updated on 2026-07-16 07:24). Unzip it in your existing HeidiSQL directory, and you can use both version in parallel.
- Linux:
- For the .deb and QT releases, Ubuntu 24.04 needs libqt6pas (not in the repos yet):
curl -L -o /tmp/libqt6pas6_6.2.10-1_amd64.deb https://github.com/davidbannon/libqt6pas/releases/download/v6.2.10/libqt6pas6_6.2.10-1_amd64.debsudo apt install /tmp/libqt6pas6_6.2.10-1_amd64.deb
- Install package:
- DEB:
sudo apt install ~/Downloads/heidisql...deb - RPM:
sudo yum install Downloads/heidisql...rpm
- DEB:
- Settings are stored in a .json file. You may migrate your settings from a Windows registry:
- click File > "Export settings" (to .txt file) in the Windows version
- click File > "Import settings" in the Linux version
- For the .deb and QT releases, Ubuntu 24.04 needs libqt6pas (not in the repos yet):
Latest changes and nightly builds
Latest automatically compiled main executable and installers for HeidiSQL. Just download and overwrite your existing C:\Program Files\HeidiSQL\heidisql.exe. Be aware that these builds are not official releases and therefore probably have more bugs, possibly serious ones.
| Classic Windows version | v13 Preview, Current Linux and macOS versions |
|---|---|
feat: show table columns in tree, as child nodesRefs #2069 fc222fb: 17 Jul 2026 14:39 v12.20.0.733464bit build ≃ Installer ≃
fix: prevent SQL error "Property 'MS_Description' already exists"Fire either sp_addextendedproperty or sp_updateextendedproperty for setting a MS SQL column comment Refs #2552 0014f1b: 17 Jul 2026 08:31 v12.20.0.7333
Update MariaDB Connector/C to v3.4.9. See https://mariadb.com/docs/release-notes/connectors/c/3.4/3.4.9
8644cd7: 07 Jul 2026 20:25 v12.20.0.7331
fix: do not paint size bar in nodes of level 2, and do not show "-" text there neitherRefs #1500 5441379: 06 Jul 2026 16:09 v12.20.0.7330
feat: display size of each index and paint a color bar behind itRefs #1500 f1d0eb6: 05 Jul 2026 12:24 v12.20.0.7328
fix: EXPLAIN <query> actions either disabled or non-working for PostgreSQL and SQLiteRefs #2540 a434066: 03 Jul 2026 10:47 v12.20.0.7327
fix: hanging in a loop over result nodes by right-click on query resultRefs #2539 1cbdf77: 03 Jul 2026 09:10 v12.20.0.7326
refactor: prefer Delphi friendly SysUtils.PathDelim over hard-coded backslash
2e290f1: 29 Jun 2026 16:06 v12.20.0.7325
fix: use default library of connection when the one from a stored session contains an invalid path/fileRefs #2501 6878578: 29 Jun 2026 14:23 v12.20.0.7324
fix: refresh session tree after import per More > Import settings fileRefs #2532 0aaa1f2: 24 Jun 2026 12:28 v12.20.0.7323
fix: CAST(x AS CHAR) not supported by MySQL below v4.0.2Refs #2531 c2362f4: 23 Jun 2026 21:08 v12.20.0.7322
fix: prepend database name to the trigger name at the correct position, when newer MariaDB versions use IF NOT EXISTSRefs #2528 179a484: 23 Jun 2026 20:13 v12.20.0.7321
Bump version for v12.20 release
9cb9c93: 22 Jun 2026 17:01 v12.20.0.732064bit build ≃ Installer ≃
feat: support some keywords like CURRENT_TIMESTAMP in SQLite default value drop-downRefs #2517 37ca309: 22 Jun 2026 16:53 v12.19.0.7319
fix: expect "IF NOT EXISTS" clause in trigger definitionRefs #2528 fae4c58: 22 Jun 2026 13:51 v12.19.0.7318
fix: reveal procedures and function in MySQL which are stored with correct case in mysql.prochttps://www.heidisql.com/forum.php?t=45182 Refs #2506 7531d7a: 22 Jun 2026 13:14 v12.19.0.7317
chore: align hostname in Transifex config file with the one in my ~/.transifexrc
7b1d106: 20 Jun 2026 13:56 v12.19.0.7316
chore: update copyright year
3ce17ff: 20 Jun 2026 13:55 v12.19.0.7315 |
twinn1013:
fix: crash when cancelling session manager while a session rename is active Two independent crashes on macOS were hidden behind this repro, since cancelling the session manager at startup also exits the application: 1. The session manager starts an inline rename right after creating a new session. When the form was closed via Cancel, the edit link's queued async EndEditNode call fired after the tree was already destroyed, and its focus restoration ran into "[TCustomForm.SetFocus] connform:Tconnform Can not focus". Remove pending async edit calls when an editor link is destroyed, cancel a pending inline rename before the form closes, and let TrySetFocus test CanSetFocus, which - unlike CanFocus - also checks the parent form itself, so it does not raise in the first place. 2. On shutdown, TSynBaseCompletionForm.Destroy (SynEdit) first frees its SizeDrag panel and then destroys the window handle. The Cocoa widgetset queries Focused during DestroyHandle, and SynEdit's Focused override dereferences the freed SizeDrag, raising "EObjectCheck: Object reference is Nil" on every macOS shutdown. Work around it by destroying the completion form's handle in FormDestroy while the form is still intact. Fixes issue 2433
Ansgar Becker:
fix: prevent crashes from SetFocus on various controls Refs #2433 bf46821: 17 Jul 2026 15:39
Ansgar Becker:
fix: data grid header keeps showing previous table's columns on macOS Most changes done by @twinn1013 Refs #2549 255695d: 17 Jul 2026 15:08
Ansgar Becker:
feat: show index icons on columns in tree, and the data type text color Also fixes dragging tree nodes to an editor, which needs DragMode=dmVCL in the source control, like I did for other places in 4fd646c829269cf625af84212e850e7ac2dac437 Refs #2069 e6e90aa: 17 Jul 2026 10:17
Ansgar Becker:
fix: prevent SQL error "Property 'MS_Description' already exists" Fire either sp_addextendedproperty or sp_updateextendedproperty for setting a MS SQL column comment Refs #2552 ac50b73: 16 Jul 2026 21:10
Ansgar Becker:
fix: enhance anchors on some of the table editors controls refs #2551 bfebd9e: 15 Jul 2026 17:28
Ansgar Becker:
fix: File > "New window" does nothing on macOS Most code taken from https://github.com/twinn1013/HeidiSQL/commit/4f4adf7e5cf3c803f384204c319e739d8b54d039 Refs #2384 0583a4e: 13 Jul 2026 15:10
Ansgar Becker:
fix: still wrong proposal background color in dark mode Refs #2534 e62c47f: 13 Jul 2026 11:35
Ansgar Becker:
fix(ui): exchange icon for "column" and its variants for add, delete, edit Refs #2069 08558f9: 10 Jul 2026 15:40
Ansgar Becker:
feat: show table columns in tree, as child nodes Refs #2069 0e20e70: 10 Jul 2026 15:04
Ansgar Becker:
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: 10 Jul 2026 15:00
Ansgar Becker:
fix: wrong proposal background color in dark mode Refs #2534 eec978c: 10 Jul 2026 12:12
Ansgar Becker:
fix: crash when opening a table, due to using the TCanvas member of a not yet visible form or frame Refs #2546 bfe29c1: 10 Jul 2026 12:05
Ansgar Becker:
fix: give the trees and grids more height for the header Refs #2543 568098a: 10 Jul 2026 11:35
Ansgar Becker:
fix: widen many TSpinEditEx instances to either 80px or align them with neighbor controls Refs #2544 5964be6: 08 Jul 2026 16:24
Ansgar Becker:
fix: some trees have their own OnContextMenu logic set at design time, do not overwrite Refs #2271 7c2870a: 08 Jul 2026 15:25
Ansgar Becker:
fix: work around unused Header.PopupMenu menu on Linux when a tree has a PopupMenu Refs #2271 2030a91: 08 Jul 2026 15:13
Ansgar Becker:
Update MariaDB Connector/C to v3.4.9. See https://mariadb.com/docs/release-notes/connectors/c/3.4/3.4.9
ba40947: 07 Jul 2026 20:22 |