v0.14.0

Features

• Support regular expression operator: REGEXP,RLIKE
• Support new statements: FLUSH REPAIR
• Support TTL feature
• Support UNSIGNED TINYINT/SMALLINT/INT/BIGINT and new APIs xdb_column_uint, xdb_column_uint64
• Support basic JSON type and query

Improvements

Bug Fixes

• Fix TIMESTAMP show/update bugs

v0.13.0

Features

• Support REPLACE statement
• Support Trigger feature
• Support Replication feature

Improvements

Bug Fixes

• Can't open existing database
• Crash when there's query error
• order by doesn't work for VARCHAR/VARBINARY
• xdb_bexec doesn't work for VARCHAR/VARBINARY
• inet type query doesn't work
• Python client crash

Test

v0.12.0

Features

• Support data types: INET(IPv4 and IPv6 host and subnet), MAC address
• Support SQL statements: SHOW CREATE DATABASE
• Support Update SET value from NULL to valid or valid to NULL
• Support embedded SOURCE sql file
• Add many new APIs and change many APIs prototypes

Improvements

Test

Bug Fixes

• Hash index flush doesn't do flush action
• Fix BOOL type bugs

v0.11.0

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

v0.10.0

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

v0.9.0

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

Features

• SELECT supports simple expr, ex: a + 10 a - b #12
• 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

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 IMDB

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

• Initial refactor release

• This project was redesigned and rewritten from scratch

• Standard RDBMS model

• New APIs which can support more languages

0.5.0

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