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v2.30.0, 2024-10-16

What's Changed

Enhancements 🎉

  • Extended support for HTTP proxy in driver options by @jkaflik in #1424
  • Default implementation of column.IterableOrderedMap by @earwin in #1417

Fixes 🐛

  • Fix serialization for slices of OrderedMap/IterableOrderedMap (#1365) by @earwin in #1418
  • Retry on broken pipe in batch by @jkaflik in #1423

Other Changes 🛠

  • Add 'clickhouse-go-rows-utils' to third-party libraries by @EpicStep in #1413

New Contributors

  • @earwin made their first contribution in #1418

Full Changelog: https://github.com/ClickHouse/clickhouse-go/compare/v2.29.0...v2.30.0

v2.29.0, 2024-09-24

What's Changed

Enhancements 🎉

  • Add ability to handle context cancellations for TCP protocol by @tinybit in #1389

Other Changes 🛠

  • Add Examples for batch.Column(n).AppendRow in columnar_insert.go by @achmad-dev in #1410

New Contributors

  • @achmad-dev made their first contribution in #1410
  • @tinybit made their first contribution in #1389

Full Changelog: https://github.com/ClickHouse/clickhouse-go/compare/v2.28.3...v2.29.0

v2.28.3, 2024-09-12

What's Changed

Other Changes 🛠

  • Revert the minimum required Go version to 1.21 by @jkaflik in #1405

Full Changelog: https://github.com/ClickHouse/clickhouse-go/compare/v2.28.2...v2.28.3

v2.28.2, 2024-08-30

What's Changed

Fixes 🐛

  • Validate connection in bad state before query execution in the stdlib database/sql driver by @jkaflik in #1396

Other Changes 🛠

  • Update README with newer Go versions by @jkaflik in #1393

Full Changelog: https://github.com/ClickHouse/clickhouse-go/compare/v2.28.1...v2.28.2

v2.28.1, 2024-08-27

What's Changed

Fixes 🐛

  • Recognize empty strings as a valid enum key by @genzgd in #1387

Other Changes 🛠

  • ClickHouse 24.8 by @jkaflik in #1385

Full Changelog: https://github.com/ClickHouse/clickhouse-go/compare/v2.28.0...v2.28.1

v2.28.0, 2024-08-23

What's Changed

Fixes 🐛

  • Fix Enum column definition parse logic to match ClickHouse spec by @jkaflik in #1380
  • Fix support custom serialization in Nested type by @jkaflik in #1381
  • Fix panic on nil map append by @jkaflik in #1383

Other Changes 🛠

  • Remove test coverage for deprecated Object('JSON') type by @jkaflik in #1377
  • Remove JSON type use from a context use example by @jkaflik in #1379
  • Make sure non-secure port is used during readiness check by @jkaflik in #1382
  • Deprecate Go 1.21 ended support and require Go 1.22 by @jkaflik in #1378

Full Changelog: https://github.com/ClickHouse/clickhouse-go/compare/v2.27.2...v2.28.0

v2.27.2, 2024-08-20

What's Changed

Enhancements 🎉

  • Optimize Date/Date32 scan by @ShoshinNikita in #1374

Fixes 🐛

  • Fix column list parsing for multiline INSERT statements by @Fiery-Fenix in #1373

New Contributors

  • @Fiery-Fenix made their first contribution in #1373
  • @ShoshinNikita made their first contribution in #1374

Full Changelog: https://github.com/ClickHouse/clickhouse-go/compare/v2.27.1...v2.27.2

v2.27.1, 2024-08-05

What's Changed

Fixes 🐛

  • Fix INSERT statement normalization match backtick table name by @jkaflik in #1366

Full Changelog: https://github.com/ClickHouse/clickhouse-go/compare/v2.27.0...v2.27.1

v2.27.0, 2024-08-01

Breaking change notice

v2.25.0 was released with a breaking change in #1306. Please review your implementation.

What's Changed

Enhancements 🎉

  • Unpack value of indirect types in array column to support nested structures in interfaced slices/arrays by @jmaicher in #1350

Fixes 🐛

  • Common HTTP insert query normalization by @jkaflik in #1341

Other Changes 🛠

  • Update examples std json by @xjeway in #1240
  • ClickHouse 24.6 by @jkaflik in #1352
  • ClickHouse 24.7 release by @jkaflik in #1363
  • Update CHANGELOG with a breaking change note by @jkaflik in #1364

New Contributors

  • @xjeway made their first contribution in #1240

Full Changelog: https://github.com/ClickHouse/clickhouse-go/compare/v2.26.0...v2.27.0

v2.26.0, 2024-06-25

What's Changed

Enhancements 🎉

  • Reintroduce the random connection strategy by @larry-cdn77 in #1313
  • Make custom debug log function on-par with the built-in one by @vespian in #1317
  • Remove date overflow check as it's normalised by ClickHouse server by @gogingersnap777 in #1315
  • Batch: impl Columns() []column.Interface method by @egsam98 in #1277

Fixes 🐛

  • Fix rows.Close do not return too early by @yujiarista in #1314
  • Setting X-Clickhouse-SSL-Certificate-Auth header correctly given X-ClickHouse-Key by @gogingersnap777 in #1316
  • Retry on network errors and fix retries on async inserts with database/sql interface by @tommyzli in #1330
  • BatchInsert parentheses issue fix by @ramzes642 in #1327

Other Changes 🛠

  • ClickHouse 24.5 by @jkaflik in #1319
  • Align allow_suspicious_low_cardinality_types and allow_suspicious_low_cardinality_types settings in tests due to ClickHouse Cloud incompatibility by @jkaflik in #1331
  • Use HTTPs scheme in std connection failover tests by @jkaflik in #1332

New Contributors

  • @larry-cdn77 made their first contribution in #1313
  • @vespian made their first contribution in #1317
  • @gogingersnap777 made their first contribution in #1315
  • @yujiarista made their first contribution in #1314
  • @egsam98 made their first contribution in #1277
  • @tommyzli made their first contribution in #1330
  • @ramzes642 made their first contribution in #1327

Full Changelog: https://github.com/ClickHouse/clickhouse-go/compare/v2.25.0...v2.26.0

v2.25.0, 2024-05-28

What's Changed

Breaking Changes 🚨

  • Add a compatibility layer for a database/sql driver to work with sql.NullString and ClickHouse nullable column by @jkaflik in #1306

Other Changes 🛠

  • Use Go 1.22 in head tests by @jkaflik in #1305
  • Skip flaky 1127 test by @jkaflik in #1307

Full Changelog: https://github.com/ClickHouse/clickhouse-go/compare/v2.24.0...v2.25.0

v2.24.0, 2024-05-08

What's Changed

Enhancements 🎉

  • Always compress responses when the client compression is on by @zhkvia in #1286
  • Optional flag to close query with flush by @hongker in #1276

Fixes 🐛

  • Fix prepare batch does not break on values substring in table name by @Wang in #1290
  • Fix nil checks when appending slices of pointers by @markandrus in #1283

Other Changes 🛠

  • Don't recreate keys from LC columns from direct stream by @genzgd in #1291

New Contributors

  • @zhkvia made their first contribution in #1286

Full Changelog: https://github.com/ClickHouse/clickhouse-go/compare/v2.23.2...v2.24.0

v2.23.2, 2024-04-25

What's Changed

Fixes 🐛

  • Fixed panic on concurrent context key map write by @Wang in #1284

Other Changes 🛠

  • Fix ClickHouse Terraform provider version by @jkaflik in #1285

New Contributors

  • @Wang made their first contribution in #1284

Full Changelog: https://github.com/ClickHouse/clickhouse-go/compare/v2.23.1...v2.23.2

v2.23.1, 2024-04-15

What's Changed

Fixes 🐛

  • Zero-value timestamp to be formatted as toDateTime(0) in bind by @jkaflik in #1260

Other Changes 🛠

  • Update #1127 test case to reproduce a progress handle when exception is thrown by @jkaflik in #1259
  • Set max parallel for GH jobs by @jkaflik in #1261
  • Ensure test container termination by @jkaflik in #1274

Full Changelog: https://github.com/ClickHouse/clickhouse-go/compare/v2.23.0...v2.23.1

v2.23.0, 2024-03-27

What's Changed

Enhancements 🎉

  • Implement ConnBeginTx as replacement for deprecated Begin by @FelipeLema in #1255

Other Changes 🛠

  • Align error message assertion to new missing custom setting error formatting by @jkaflik in #1256
  • CI chores by @jkaflik in #1258

New Contributors

  • @FelipeLema made their first contribution in #1255

Full Changelog: https://github.com/ClickHouse/clickhouse-go/compare/v2.22.4...v2.23.0

v2.22.4, 2024-03-25

What's Changed

Fixes 🐛

  • Fix column name with parantheses handle in prepare batch by @jkaflik in #1252

Other Changes 🛠

  • Fix TestBatchAppendRows work different on cloud by @jkaflik in #1251

Full Changelog: https://github.com/ClickHouse/clickhouse-go/compare/v2.22.3...v2.22.4

v2.22.3, 2024-03-25

What's Changed

Fixes 🐛

  • Fix panic on tuple scan on []any by @jkaflik in #1249

Other Changes 🛠

  • Error channel deadlock fix test case by @threadedstream in #1239
  • Add a test case for #1127 by @jkaflik in #1242
  • Run cloud/head jobs when label by @jkaflik in #1250

Full Changelog: https://github.com/ClickHouse/clickhouse-go/compare/v2.22.2...v2.22.3

v2.22.2, 2024-03-18

What's Changed

Fixes 🐛

  • Fix for Map columns with Enums by @leklund in #1236

New Contributors

  • @leklund made their first contribution in #1236

Full Changelog: https://github.com/ClickHouse/clickhouse-go/compare/v2.22.1...v2.22.2

v2.22.1, 2024-03-18

What's Changed

Fixes 🐛

  • Make errors channel buffered inside query() by @threadedstream in #1237

Full Changelog: https://github.com/ClickHouse/clickhouse-go/compare/v2.22.0...v2.22.1

v2.20.0, 2024-02-28

What's Changed

Enhancements 🎉

  • Support [n]byte/[]byte type Scan/Append to FixedString column by @rogeryk in #1205

Other Changes 🛠

  • Enable cloud tests by @jkaflik in #1202
  • Removed LowCardinality(UInt64) tests that caused allow_suspicious_low_cardinality_types related error by @jkaflik in #1206

Full Changelog: https://github.com/ClickHouse/clickhouse-go/compare/v2.19.0...v2.20.0

v2.19.0, 2024-02-26

What's Changed

Enhancements 🎉

  • handle ctx.Done() in acquire by @threadedstream in #1199

Fixes 🐛

  • Fix panic on format nil *fmt.Stringer type value by @zaneli in #1200

Other Changes 🛠

  • Update Go/ClickHouse versions by @jkaflik in #1201

New Contributors

  • @threadedstream made their first contribution in #1199
  • @zaneli made their first contribution in #1200

Full Changelog: https://github.com/ClickHouse/clickhouse-go/compare/v2.18.0...v2.19.0

v2.18.0, 2024-02-01

What's Changed

Enhancements 🎉

  • Add WithAllocBufferColStrProvider string column allocator for batch insert performance boost by @hongker in #1181

Fixes 🐛

  • Fix bind for seconds scale DateTime by @jkaflik in #1184

Other Changes 🛠

  • resolves #1163 debugF function is not respected by @omurbekjk in #1166

New Contributors

  • @omurbekjk made their first contribution in #1166
  • @hongker made their first contribution in #1181

Full Changelog: https://github.com/ClickHouse/clickhouse-go/compare/v2.17.1...v2.18.0

v2.17.1, 2023-12-27

What's Changed

Fixes 🐛

  • fix panic in contextWatchDog nil pointer check by @nityanandagohain in #1168

New Contributors

  • @nityanandagohain made their first contribution in #1168

Full Changelog: https://github.com/ClickHouse/clickhouse-go/compare/v2.17.0...v2.17.1

v2.17.0, 2023-12-21

What's Changed

Enhancements 🎉

  • Iterable ordered map alternative with improved performance by @hanjm in #1152
  • Support bool alias type by @yogasw in #1156

Fixes 🐛

  • Update README - mention HTTP protocol usable only with database/sql interface by @jkaflik in #1160
  • Fix README example for Debugf by @aramperes in #1153

New Contributors

  • @yogasw made their first contribution in #1156
  • @aramperes made their first contribution in #1153

Full Changelog: https://github.com/ClickHouse/clickhouse-go/compare/v2.16.0...v2.17.0

v2.16.0, 2023-12-01

What's Changed

Enhancements 🎉

  • Add sql.Valuer support for all types by @deankarn in #1144

Fixes 🐛

  • Fix DateTime64 range to actual supported range per ClickHouse documentation by @phil-schreiber in #1148

New Contributors

  • @phil-schreiber made their first contribution in #1148
  • @deankarn made their first contribution in #1144

Full Changelog: https://github.com/ClickHouse/clickhouse-go/compare/v2.15.0...v2.16.0

v2.14.3, 2023-10-12

What's Changed

Fixes 🐛

  • Fix insertion of empty map into JSON column by using _dummy subcolumn by @leodido in #1116

Other Changes 🛠

  • chore: specify method field on compression in example by @rdaniels6813 in #1111
  • chore: remove extra error checks by @rutaka-n in #1095

New Contributors

  • @leodido made their first contribution in #1116
  • @rdaniels6813 made their first contribution in #1111
  • @rutaka-n made their first contribution in #1095

Full Changelog: https://github.com/ClickHouse/clickhouse-go/compare/v2.14.2...v2.14.3

v2.14.2, 2023-10-04

What's Changed

Fixes 🐛

  • Fix: Block stream read process would be terminated by empty block with zero rows by @crisismaple in #1104
  • Free compressor's buffer when FreeBufOnConnRelease enabled by @cergxx in #1100
  • Fix truncate ` for HTTP adapter by @beck917 in #1103

Other Changes 🛠

  • docs: update readme.md by @rfyiamcool in #1068
  • Remove dependency on github.com/satori/go.uuid by @srikanthccv in #1085

New Contributors

  • @rfyiamcool made their first contribution in #1068
  • @beck917 made their first contribution in #1103
  • @srikanthccv made their first contribution in #1085

Full Changelog: https://github.com/ClickHouse/clickhouse-go/compare/v2.14.1...v2.14.2

v2.14.1, 2023-09-14

What's Changed

Enhancements 🎉

  • parseDSN: support connection pool settings (#1082) by @hanjm in #1084

New Contributors

  • @hanjm made their first contribution in #1084

Full Changelog: https://github.com/ClickHouse/clickhouse-go/compare/v2.14.0...v2.14.1

v2.14.0, 2023-09-12

What's Changed

Enhancements 🎉

  • Add FreeBufOnConnRelease to clickhouse.Options by @cergxx in #1091
  • Improving object allocation for (positional) parameter binding by @mdonkers in #1092

Fixes 🐛

  • Fix escaping double quote in SQL statement in prepare batch by @jkaflik in #1083

Other Changes 🛠

  • Update Go & ClickHouse versions by @jkaflik in #1079
  • Return status code from any http error by @RoryCrispin in #1090
  • tests: fix dropped error by @alrs in #1081
  • chore: unnecessary use of fmt.Sprintf by @testwill in #1080
  • Run CI on self hosted runner by @jkaflik in #1094

New Contributors

  • @cergxx made their first contribution in #1091
  • @alrs made their first contribution in #1081
  • @testwill made their first contribution in #1080

Full Changelog: https://github.com/ClickHouse/clickhouse-go/compare/v2.13.4...v2.14

v2.13.4, 2023-08-30

What's Changed

Fixes 🐛

  • fix(proto): add TCP protocol version in query packet by @jkaflik in #1077

Full Changelog: https://github.com/ClickHouse/clickhouse-go/compare/v2.13.3...v2.13.4

v2.13.3, 2023-08-23

What's Changed

Fixes 🐛

  • fix(column.json): fix bool type handling by @jkaflik in #1073

Full Changelog: https://github.com/ClickHouse/clickhouse-go/compare/v2.13.2...v2.13.3

v2.13.2, 2023-08-18

What's Changed

Fixes 🐛

  • fix: update ch-go to remove string length limit by @jkaflik in #1071

Other Changes 🛠

  • Test against latest and head CH by @jkaflik in #1060

Full Changelog: https://github.com/ClickHouse/clickhouse-go/compare/v2.13.1...v2.13.2

v2.13.1, 2023-08-17

What's Changed

Fixes 🐛

  • fix: native format Date32 representation by @jkaflik in #1069

Full Changelog: https://github.com/ClickHouse/clickhouse-go/compare/v2.13.0...v2.13.1

v2.13.0, 2023-08-10

What's Changed

Enhancements 🎉

  • Support scan from uint8 to bool by @ValManP in #1051
  • Binding arguments for AsyncInsert interface by @mdonkers in #1052
  • Batch rows count API by @EpicStep in #1063
  • Implement release connection in batch by @EpicStep in #1062

Other Changes 🛠

  • Restore test against CH 23.7 by @jkaflik in #1059

New Contributors

  • @ValManP made their first contribution in #1051

Full Changelog: https://github.com/ClickHouse/clickhouse-go/compare/v2.12.1...v2.13.0

v2.12.1, 2023-08-02

What's Changed

Fixes 🐛

  • Fix InsertAsync typo in docs by @et in #1044
  • Fix panic and releasing in batch column by @EpicStep in #1055
  • Docs/changelog fixes by @jmaicher in #1046
  • Clarify error message re custom serializaion support by @RoryCrispin in #1056
  • Fix send query on batch retry by @EpicStep in #1045

Other Changes 🛠

  • Update ClickHouse versions by @jkaflik in #1054

New Contributors

  • @et made their first contribution in #1044
  • @EpicStep made their first contribution in #1055
  • @jmaicher made their first contribution in #1046
  • @RoryCrispin made their first contribution in #1056

Full Changelog: https://github.com/ClickHouse/clickhouse-go/compare/v2.12.0...v2.12.1

v2.12.0, 2023-07-27

What's Changed

Enhancements 🎉

  • Implement elapsed time in query progress by @jkaflik in #1039

Fixes 🐛

  • Release connection slot on connection acquire timeout by @sentanos in #1042

New Contributors

  • @sentanos made their first contribution in #1042

Full Changelog: https://github.com/ClickHouse/clickhouse-go/compare/v2.11.0...v2.12.0

v2.11.0, 2023-07-20

What's Changed

Enhancements 🎉

  • Retry for batch API by @djosephsen in #941

Fixes 🐛

  • Fix startAutoCloseIdleConnections cause goroutine leak by @YenchangChan in #1011
  • Fix netip.Addr pointer panic by @anjmao in #1029

Other Changes 🛠

  • Git actions terraform by @gingerwizard in #1023

New Contributors

  • @YenchangChan made their first contribution in #1011
  • @djosephsen made their first contribution in #941
  • @anjmao made their first contribution in #1029

Full Changelog: https://github.com/ClickHouse/clickhouse-go/compare/v2.10.1...v2.11.0

v2.10.1, 2023-06-06

What's Changed

Other Changes 🛠

  • Update outdated README.md by @kokizzu in #1006
  • Remove incorrect usage of KeepAlive in DialContext by @jkaflik in #1009

New Contributors

  • @kokizzu made their first contribution in #1006

Full Changelog: https://github.com/ClickHouse/clickhouse-go/compare/v2.10.0...v2.10.1

v2.10.0, 2023-05-17

What's Changed

Enhancements 🎉

  • Support [16]byte/[]byte typed scan/append for IPv6 column by @crisismaple in #996
  • Add custom dialer option to http protocol by @stephaniehingtgen in #998

Fixes 🐛

  • Tuple scan respects both value and pointer variable by @crisismaple in #971
  • Auto close idle connections in native protocol in respect of ConnMaxLifetime option by @jkaflik in #999

New Contributors

  • @stephaniehingtgen made their first contribution in #998

Full Changelog: https://github.com/ClickHouse/clickhouse-go/compare/v2.9.3...v2.10.0

v2.9.2, 2023-05-08

What's Changed

Fixes 🐛

  • Pass http.ProxyFromEnvironment configuration to http.Transport by @slvrtrn in #987

Other Changes 🛠

  • Use any instead of interface{} by @candiduslynx in #984

New Contributors

  • @candiduslynx made their first contribution in #984
  • @slvrtrn made their first contribution in #987

Full Changelog: https://github.com/ClickHouse/clickhouse-go/compare/v2.9.1...v2.9.2

v2.9.1, 2023-04-24

What's Changed

Enhancements 🎉

  • Do not return hard error on unparsable version in HTTP proto by @hexchain in #975

Fixes 🐛

  • Return ErrBadConn in stdDriver Prepare if connection is broken by @czubocha in #977

New Contributors

  • @czubocha made their first contribution in #977
  • @hexchain made their first contribution in #975

Full Changelog: https://github.com/ClickHouse/clickhouse-go/compare/v2.9.0...v2.9.1

v2.9.0, 2023-04-13

What's Changed

Enhancements 🎉

  • External tables support for HTTP protocol by @crisismaple in #942
  • Support driver.Valuer in String and FixedString columns by @jkaflik in #946
  • Support boolean and pointer type parameter binding by @crisismaple in #963
  • Support insert/scan IPv4 using UInt32/*UInt32 types by @crisismaple in #966

Fixes 🐛

  • Reset the pointer to the nullable field by @xiaochaoren1 in #964
  • Enable to use ternary operator with named arguments by @crisismaple in #965

Other Changes 🛠

  • chore: explain async insert in docs by @jkaflik in #969

New Contributors

  • @xiaochaoren1 made their first contribution in #964

Full Changelog: https://github.com/ClickHouse/clickhouse-go/compare/v2.8.3...v2.9.0

2.8.3, 2023-04-03

Bug fixes

  • Revert: Expire idle connections no longer acquired during lifetime #958 by @jkaflik

2.8.2, 2023-03-31

Bug fixes

  • Expire idle connections no longer acquired during lifetime #945 by @jkaflik

2.8.1, 2023-03-29

Bug fixes

  • Fix idle connection check for TLS connections #951 by @jkaflik & @alekar

2.8.0, 2023-03-27

New features

  • Support customized "url path" in http connection #938 by @crisismaple
  • Allow Auth.Database option to be empty #926 by @v4run

Chores

  • Bump github.com/stretchr/testify from 1.8.1 to 1.8.2 #933
  • fix: small typo in the text of an error #936 by @lspgn
  • Improved bug template #916 by @mshustov

2.7.0, 2023-03-08

New features

  • Date type with user location #923 by @jkaflik
  • Add AppendRow function to BatchColumn #927 by @pikot

Bug fixes

  • fix: fix connect.compression's format verb #924 by @mind1949
  • Add extra padding for strings shorter than FixedColumn length #910 by @jkaflik

Chore

  • Bump github.com/andybalholm/brotli from 1.0.4 to 1.0.5 #911
  • Bump github.com/paulmach/orb from 0.8.0 to 0.9.0 #912
  • Bump golang.org/x/net from 0.0.0-20220722155237-a158d28d115b to 0.7.0 #928

2.6.5, 2023-02-28

Bug fixes

  • Fix array parameter formatting in binding mechanism #921 by @genzgd

2.6.4, 2023-02-23

Bug fixes

  • Fixed concurrency issue in stdConnOpener #918 by @jkaflik

2.6.3, 2023-02-22

Bug fixes

  • Fixed lib/binary/string_safe.go for non 64bit arch #914 by @atoulme

2.6.2, 2023-02-20

Bug fixes

  • Fix decimal encoding with non-standard exponential representation #909 by @vogrelord
  • Add extra padding for strings shorter than FixedColumn length #910 by @jkaflik

Chore

  • Remove Yandex ClickHouse image from Makefile #895 by @alexey-milovidov
  • Remove duplicate of error handling #898 by @Astemirdum
  • Bump github.com/ClickHouse/ch-go from 0.51.2 to 0.52.1 #901

2.6.1, 2023-02-13

Bug fixes

  • Do not reuse expired connections (ConnMaxLifetime) #892 by @iamluc
  • Extend default dial timeout value to 30s #893 by @jkaflik
  • Compression name fixed in sendQuery log #884 by @fredngr

2.6.0, 2023-01-27

New features

  • Client info specification implementation #876 by @jkaflik

Bug fixes

  • Better handling for broken connection errors in the std interface #879 by @n-oden

Chore

  • Document way to provide table or database identifier with query parameters #875 by @jkaflik
  • Bump github.com/ClickHouse/ch-go from 0.51.0 to 0.51.2 #881

2.5.1, 2023-01-10

Bug fixes

  • Flag connection as closed on broken pipe #871 by @n-oden

2.5.0, 2023-01-10

New features

  • Buffered compression column by column for a native protocol. Introduces the MaxCompressionBuffer option - max size (bytes) of compression buffer during column-by-column compression (default 10MiB) #808 by @gingerwizard and @jkaflik
  • Support custom types that implement sql.Scanner interface (e.g. type customString string) #850 by @DarkDrim
  • Append query options to the context instead of overwriting #860 by @aaron276h
  • Query parameters support #854 by @jkaflik
  • Expose DialStrategy function to the user for custom connection routing. #855 by @jkaflik

Bug fixes

  • Close connection on Cancel. This is to make sure context timed out/canceled connection is not reused further #764 by @gingerwizard
  • Fully parse secure and skip_verify in DSN query parameters. #862 by @n-oden

Chore

  • Added tests covering read-only user queries #837 by @jkaflik
  • Agreed on a batch append fail semantics #853 by @jkaflik

2.4.3, 2022-11-30

Bug Fixes

  • Fix in batch concurrency - batch could panic if used in separate go routines.
    The issue was originally detected due to the use of a batch in a go routine and Abort being called after the connection was released on the batch. This would invalidate the connection which had been subsequently reassigned.
    This issue could occur as soon as the conn is released (this can happen in a number of places e.g. after Send or an Append error), and it potentially returns to the pool for use in another go routine. Subsequent releases could then occur e.g., the user calls Abort mainly but also Send would do it. The result is the connection being closed in the release function while another batch or query potentially used it.
    This release includes a guard to prevent release from being called more than once on a batch. It assumes that batches are not thread-safe - they aren't (only connections are).

2.4.2, 2022-11-24

Bug Fixes

  • Don't panic on Send() on batch after invalid Append. #830
  • Fix JSON issue with nil if column order is inconsistent. #824

2.4.1, 2022-11-23

Bug Fixes

  • Patch release to fix "Regression - escape character was not considered when comparing column names". #828

2.4.0, 2022-11-22

New Features

  • Support for Nullables in Tuples. #821 #817
  • Use headers for auth and not url if SSL. #811
  • Support additional headers. #811
  • Support int64 for DateTime. #807
  • Support inserting Enums as int8/int16/int. #802
  • Print error if unsupported server. #792
  • Allow block buffer size to tuned for performance - see BlockBufferSize. #776
  • Support custom datetime in Scan. #767
  • Support insertion of an orderedmap. #763

Bug Fixes

  • Decompress errors over HTTP. #792
  • Use timezone vs timeZone so we work on older versions. #781
  • Ensure only columns specified in INSERT are required in batch. #790
  • Respect order of columns in insert for batch. #790
  • Handle double pointers for Nullable columns when batch inserting. #774
  • Use nil for LowCardinality(Nullable(X)). #768

Breaking Changes

  • Align timezone handling with spec. #776, specifically:
    • If parsing strings for datetime, datetime64 or dates we assume the locale is Local (i.e. the client) if not specified in the string.
    • The server (or column tz) is used for datetime and datetime64 rendering. For date/date32, these have no tz info in the server. For now, they will be rendered as UTC - consistent with the clickhouse-client
    • Addresses bind when no location is set