3.4.12 (2026-07-27)

Breaking changes:

• minimal supported Grafana version bumped to 12.3.0 (grafanaDependency: ">=12.3.0"), frontend migrated to @grafana/data|runtime|ui 13.x

Enhancements:

• add streaming support for near real-time dashboards: Streaming switch in Query Editor with Delta (fetch only new data since last poll, requires $timeFilter) and Full refresh modes, configurable poll interval and lookback window; implemented via short time-range polling instead of LIVE VIEW / WINDOW VIEW, fix #429
• honest frontend coverage numbers (coverage denominator pinned to the whole src/, threshold ratchet to fail CI on silent drops) and full Coveralls reporting for both Go and frontend parts, fix #785
• run testflows e2e suites against fixed Grafana 13.1.0 and latest in parallel job groups, fix #908, fix #786
• add e2e coverage for the autocomplete permission bubble when connection user has limited access, fix #816
• stabilize testflows suite: replace the flaky gh-api external datasource with gh-play (play.clickhouse.com), use provisioned datasources instead of UI creation, re-anchor selectors on stable data-testid/aria-label instead of hashed Emotion classes, adapt to Grafana 13.1 UI
• upgrade JS and Go dependencies to fix security alerts (dompurify, @grafana/runtime, immutable, postcss, fast-uri, protobufjs, protocol-buffers-schema, websocket-driver, google.golang.org/grpc, pillow)

Fixes:

• fix UInt64/Int64 values still rounded on JS side — ClickHouse >= 25.8 changed output_format_json_quote_64bit_integers default from 1 to 0, so JSON.parse inside Grafana's backendSrv rounded big integers before the plugin saw them (11189782786942380395 shown as 11189782786942380000); responses are now fetched as raw text and parsed losslessly with lossless-json, which also works for readonly=1 users where per-request settings are forbidden, fix #832, related to ClickHouse/ClickHouse#86553
• fix breaking change in 3.4.x when constant and plain template variables were single-quoted in identifier positions (FROM, JOIN, INTO, TO, TABLE) producing invalid SQL like FROM 'db.table', now such positions interpolate raw while IN / tuple context keeps quoting; also fix TypeError crash on null values of variables without config, fix #905
• fix ClickHouse # and #! line comments silently corrupting or truncating queries in the SQL tokenizer, AST comment preservation and comment stripping, add syntax highlight for them in the Monaco editor, fix #610
• fix $conditionalTest dropping commas inside SQL_if — the 2- vs 3-parameter form was decided by counting top-level commas, so leading-comma ($conditionalTest(, expr, $var)), trailing-comma and quoted-comma (AND t = 'a,b') idioms produced broken SQL; the comma scan is now quote- and backslash-aware and \, is supported as an explicit escape, regression of #726, thanks https://github.com/oplehto
• fix autocomplete permission errors not classified when Grafana <= 12.4 drops the text/plain ClickHouse error body and the permission bubble never showed — the autocomplete query is retried once with SETTINGS http_write_exception_in_output_format=1 so ACCESS_DENIED is reported as a JSON exception field, related to #816

What's Changed

• Bump pillow from 12.1.1 to 12.2.0 in /tests/testflows by @dependabot[bot] in #888
• Bump protocol-buffers-schema from 3.6.0 to 3.6.1 by @dependabot[bot] in #889
• Bump protobufjs from 7.5.4 to 7.5.5 by @dependabot[bot] in #890
• Dependencies update by @lunaticusgreen in #900
• ci(testflows): run suites against fixed + latest Grafana in parallel by @lunaticusgreen in #893
• test(e2e): stabilize testflows suite (remove flaky gh-api, fix fragile selectors, provision datasources) by @lunaticusgreen in #902
• add streaming by @lunaticusgreen in #884
• fix($conditionalTest): preserve commas inside SQL_if (quotes + , escape) by @oplehto in #903
• test(e2e): replace gh-api datasource with gh-play (play.clickhouse.com) by @Slach in #907
• Fixed Grafana version to 13.1.0 by @lunaticusgreen in #913
• Implement e2e case for limited access scenario by @lunaticusgreen in #912
• Fix variables quoting interpolation by @lunaticusgreen in #910
• Add hash comment support by @lunaticusgreen in #911
• honest coverage numbers + full Coveralls reporting by @lunaticusgreen in #914
• parse ClickHouse JSON responses losslessly to preserve 64-bit integers precision by @lunaticusgreen in #917
• chore(deps-dev): bump postcss from 8.5.15 to 8.5.23 by @dependabot[bot] in #922
• chore(deps-dev): bump fast-uri from 3.1.2 to 3.1.4 by @dependabot[bot] in #921
• chore(deps): bump dompurify and @grafana/runtime by @dependabot[bot] in #919
• chore(deps): bump google.golang.org/grpc from 1.81.0 to 1.82.1 by @dependabot[bot] in #920
• chore(deps): bump immutable from 5.1.6 to 5.1.9 by @dependabot[bot] in #918
• chore(deps): bump pillow from 12.2.0 to 12.3.0 in /tests/testflows by @dependabot[bot] in #916
• chore(deps-dev): bump websocket-driver from 0.7.4 to 0.7.5 by @dependabot[bot] in #915

New Contributors

• @oplehto made their first contribution in #903

Full Changelog: v3.4.11...v3.4.12