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Change Log

0.11.0 (2024-11-11)

Features

  • Support data types: BOOL, TIMESTAMP
  • Support SQL statements: CREATE SERVER DROP SERVER SHOW SERVERS
  • Support APIs: xdb_connect
  • Support embedded SERVER mode
  • Support xdb-cli standalone server mode
  • Support telnet connection

Improvements

Test

Bug Fixes

  • INSERT without column list will set all columns to NULL
  • WAL flush with wrong address and range
  • Crash when table drop during flush

0.10.0 (2024-11-01)

Features

  • Support VARCHAR, BINARY, VARBINARY
  • Support WAL #31
  • Support OR operator
  • Support new API xdb_column_blob
  • Support CREATE DATABASE SYNCMODE option

Improvements

Test

Bug Fixes

  • Create duplicate database doesn't report error sometimes

0.9.0 (2024-10-11)

Features

  • Support LIKE operator
  • Support NOLOCK mode
  • Add new APIs: xdb_column_type xdb_column_name xdb_type2str
  • Add GO Python C++ drivers

Improvements

  • Optimize field lookup

Test

  • Optimize STL Map and HashMap(unordered_map) benchmark test driver
  • Add Boost MultiIndex benchmark test driver
  • Add more smoke test cases

Bug Fixes

  • The index was incorrectly created as the primary key
  • Update many rows with expression will set all rows to first row's value
  • Auto-completion heap buffer access overflow
  • Update transaction heap use after free
  • Wrong Aggregation function result for empty table
  • Update transaction crash issue
  • SQL syntax error

0.8.0 (2024-09-03)

Features

  • SELECT supports simple expr, ex: a + 10 a - b #12
  • SELECT supports AS
  • Support operators: >, >=, <, <=, !=, <> #13
  • WHERE expression supports having the field on the right side, ex: 5 < id
  • xdb-cli creates a default memory database, allowing you to directly create tables for practice.
  • Support CMake

Improvements

  • Optimize INSERT UPDATE DELETE auto-commit performance for in-memory database

Test

  • Refactor benchmark test framework and support binding cpu core
  • New crossdb and SQLite benchmark test driver
  • Add C++ STL Map and HashMap(unordered_map) benchmark test driver
  • Import unit test framework
  • Add few test cases

Bug Fixes

  • Fix bug #15 Segmentation fault occurs while using on-disk database
  • Fix close connection then reopen connection will cause previous connection use-after-free issue and memory leak issue
  • Fix query misses issue during hash index rehashing

0.7.0 (2024-08-26)

Features

  • UPDATE SET clause supports simple expression, ex: SET val=val+5 SET val=a-b
  • UPDATE SET supports prepared statement
  • INSERT supports prepared statement
  • New APIs: xdb_bexec, xdb_vbexec, xdb_stmt_bexec, xdb_stmt_vexec, xdb_clear_bindings

Improvements

  • INSERT parser avoids malloc
  • UPDATE only updates affected indexes
  • Optimize INSERT UPDATE DELETE auto-commit performance for in-memory database

Test

  • Improve benchmark test
  • Add SQLite benchmark test

Bug Fixes

  • Fix hash index infinite loop issue
  • Fix bench test time unit ns to us

0.6.0 (2024-08-18)

Initial refactor release

  • This project was redesigned and rewritten from scratch for over one year
  • Standard RDBMS model
  • New SQL APIs which can support more language
  • MySQL style SQL and shell, which will be easy to study.

0.5.0 (2023-06-26)

Features

  • CrossDB command line tool crossdb-cli is released
  • Optimize insert/update/query/delete performance
  • Add new API cross_matchCreate and cross_matchFree
  • DML APIs supports cross_fields_h and cross_match_h

Bug Fixes

0.4.0 (2023-06-20)

Features

  • Support FreeBSD(X64)
  • Optimize insert/update/query/delete performance
  • Add new API cross_fieldsCreate and cross_fieldsFree

Bug Fixes

0.3.0 (2023-06-13)

Features

  • Support MacOS (X64 and ARM64)
  • Change CROSS_DB_XXX to CROSS_XXX

Bug Fixes

  • cross_dbTblCreate flags CROSS_DB_RBTREE doesn't create Primary Key Index type correctly

0.2.0 (2023-06-07)

Features

  • Support Windows
  • Support Linux ARM64

Bug Fixes

0.1.0 (2023-06-03)

  • Initial release