Deliver 0.8.0

Author: jcwangxp

CHANGELOG.md

@@ -1,5 +1,60 @@
 # Change Log
 
+<!--
+- distinct
+- group by, having
+- select expr a+b, a*b
+- insert expr
+- where a<b
+- where exp: OR
+- join
+- operators: like, in, between
+- data types: BOOL, TIMESTAMP
+- function (math[abs,round,floor], str[length], time[now()])
+- client-server mode
+- NULL, autoincr ID
+- WAL
+- TCP-B
+- TCP-C
+
+## 0.7.0 <small>(2024-08-26)</small>
+
+**Features**
+**Improvements**
+**Test**
+**Bug Fixes**
+
+-->
+
+## 0.8.0 <small>(2024-09-03)</small>
+
+**Features**
+
+- `SELECT` supports simple expr, ex: `a + 10` `a - b` [#12](https://github.com/crossdb-org/crossdb/issues/12)
+- Support operators: `>`, `>=`, `<`, `<=`, `!=`, `<>` [#13](https://github.com/crossdb-org/CrossDB/issues/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](https://github.com/crossdb-org/CrossDB/issues/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 <small>(2024-08-26)</small>
 
 **Features**
@@ -13,7 +68,7 @@
 
 - `INSERT` parser avoids malloc
 - `UPDATE` only updates affected indexes
-- Optimize `INSERT` `UPDATE` `DELETE` auto-commit performance for `IMDB` 
+- Optimize `INSERT` `UPDATE` `DELETE` auto-commit performance for in-memory database 
 
 **Test**
 
@@ -26,64 +81,61 @@
 - Fix bench test time unit `ns` to `us`
 
 
-## 0.6.0 <small>(2024-08-15)</small>
+## 0.6.0 <small>(2024-08-18)</small>
 
-- **Initial refactor release**
+**Initial refactor release**
 
-- This project was redesigned and rewritten from scratch
+- This project was redesigned and rewritten from scratch for over one year
 - Standard RDBMS model
-- New APIs which can support more languages
+- New SQL APIs which can support more language
+- MySQL style SQL and shell, which will be easy to study.
 
 
 ## 0.5.0 <small>(2023-06-26)</small>
 
-Features
+**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
+**Bug Fixes**
 
 
 ## 0.4.0 <small>(2023-06-20)</small>
 
-Features
+**Features**
 
 - Support FreeBSD(X64)
 - Optimize insert/update/query/delete performance
 - Add new API `cross_fieldsCreate` and `cross_fieldsFree`
 
-Bug Fixes
+**Bug Fixes**
 
 
 ## 0.3.0 <small>(2023-06-13)</small>
 
-Features
+**Features**
 
 - Support MacOS (X64 and ARM64)
 - Change `CROSS_DB_XXX` to `CROSS_XXX`
 
-Bug Fixes
+**Bug Fixes**
 
 - `cross_dbTblCreate` flags `CROSS_DB_RBTREE` doesn't create Primary Key Index type correctly
 
 
 ## 0.2.0 <small>(2023-06-07)</small>
 
-Features
+**Features**
 
 - Support Windows
 - Support Linux ARM64
 
-Bug Fixes
+**Bug Fixes**
 
 
 ## 0.1.0 <small>(2023-06-03)</small>
 
 - **Initial release**
-
-Features
-
-Bug Fixes

CMakeLists.txt

@@ -24,7 +24,7 @@ add_custom_command(
 
 set(CPACK_PACKAGE_NAME crossdb)
 set(CPACK_PACKAGE_VERSION_MAJOR 0)
-set(CPACK_PACKAGE_VERSION_MINOR 7)
+set(CPACK_PACKAGE_VERSION_MINOR 8)
 set(CPACK_PACKAGE_VERSION_PATCH 0)
 set(CPACK_PACKAGE_CONTACT "crossdb <[email protected]>")
 #set(CPACK_GENERATOR DEB)

Makefile

@@ -10,6 +10,7 @@ help:
 	@echo "make example              Build and run example (need to install crossdb first)"
 	@echo "make bench                Build and run bench test (need to install crossdb first)"
 	@echo "make bench-sqlite         Build and run sqlite bench test (need to install sqlite3 first)"
+	@echo "make bench-stlmap         Build and run C++ STL Map and HashMap(unordered_map) bench test"
 
 .PHONY: build
 build:
@@ -22,13 +23,18 @@ debug:
 	$(CC) -o build/xdb-cli src/xdb-cli.c -lpthread -g
 	cp include/crossdb.h build/
 
+.PHONY: test
+test:
+	make -C test/
+
 run:
 	build/xdb-cli
 
 clean:
 	rm -rf build/*
 	make -C examples/c/ clean
 	make -C bench/basic/ clean
+	make -C test/ clean
 
 wall:
 	$(CC) -o build/xdb-cli src/xdb-cli.c -lpthread -O2 -Wall
@@ -68,3 +74,6 @@ bench:
 
 bench-sqlite:
 	make -C bench/basic/ sqlite
+
+bench-stlmap:
+	make -C bench/basic/ stlmap

README.md

@@ -4,13 +4,10 @@
 	</a>
 </p>
 <p align="center">
-	<strong>Super High-performance Lightweight Embedded and Server OLTP RDBMS✨</strong>
+	<strong>Ultra High-performance Lightweight Embedded and Server OLTP RDBMS✨</strong>
 </p>
 
-> **NOTE** 
-> This project is still in the early development stage, so please **DO NOT** use in your project now.
-
-**CrossDB** is a super high-performance, lightweight embedded and server OLTP RDBMS. 
+**CrossDB** is a ultra high-performance, lightweight embedded and server OLTP RDBMS. 
 It is designed for high-performance scenarios where the main memory can hold the entire database.
 
 ## Features
@@ -34,7 +31,7 @@ It is designed for high-performance scenarios where the main memory can hold the
 - Supports an embedded CrossDB shell with convenient auto-completion.
 - Supports multi-statement APIs.
 - Supports prepared statement APIs.
-- Super high performance.
+- Ultra high performance.
 - Very simple: Simple header and library file.
 - Zero config: No complex configuration, truly out-of-the-box.
 
@@ -49,6 +46,13 @@ It is designed for high-performance scenarios where the main memory can hold the
 
 ## Build and Install
 
+### Download code
+
+```bash
+git clone https://github.com/crossdb-org/crossdb.git
+cd crossdb
+```
+
 ### Linux/FreeBSD
 
 ```bash
@@ -82,15 +86,18 @@ sudo make install
 
 ## Contribution
 
-Following contributions are welcome:
+This project is still in its early stages and currently lacks stability. We welcome the following contributions:
+
+- **Language bindings**: `Python`, `Java`, `Go`, `CSharp`, `JavaScript`, `PHP`, etc.
+- **Bug Reporting**: Identify and report any issues or bugs you encounter.
+- **Testing**: Participate in testing to ensure the reliability and stability of the project.
 
-- Language bindings: `Python`, `Java`, `Go`, `CSharp`, `Javascript`, `PHP`, etc.
-- Testing and bug reporting.
+Your contributions will be greatly appreciated and will help us make this project more robust and reliable.
 
 
 ## Reference
 
-### Benchmark vs. SQLite
+### 1,000,000 Rows Random Access Benchmark vs. SQLite
 
 <p align="center">
 	<a href="https://crossdb.org/blog/benchmark/crossdb-vs-sqlite3/">
@@ -100,6 +107,16 @@ Following contributions are welcome:
 
 https://crossdb.org/blog/benchmark/crossdb-vs-sqlite3/
 
+### 1,000,000 Rows Random Access Benchmark vs. C++ STL Map and HashMap
+
+<p align="center">
+	<a href="https://crossdb.org/blog/benchmark/crossdb-vs-stlmap/">
+	<img src="https://crossdb.org/images/crossdb-vs-stlmap.png">
+	</a>
+</p>
+
+https://crossdb.org/blog/benchmark/crossdb-vs-stlmap/
+
 ### SQL Statements
 
 https://crossdb.org/sql/statements/

bench/basic/Makefile

@@ -3,16 +3,52 @@ all:
 	./bench-crossdb
 
 debug:
-	$(CC) -o bench-crossdb bench-crossdb.c ../../src/crossdb.c -g -fsanitize=address
-	./bench-crossdb
+	$(CC) -o bench-crossdb bench-crossdb.c ../../src/crossdb.c -lpthread -g -fsanitize=address
+
+gdb: debug
+	gdb ./bench-crossdb
 
 sqlite:
-	$(CC) -o bench-sqlite bench-sqlite.c -O2 -lsqlite3 
+	$(CC) -o bench-sqlite bench-sqlite.c -O2 -lsqlite3 -lpthread
 	./bench-sqlite
 
+stlmap:
+	$(CC) -o bench-stlmap bench-stlmap.cpp -std=c++17 -O2 -lpthread -lstdc++ -lm
+	./bench-stlmap
+
 fast:
-	$(CC) -o bench-crossdb bench-crossdb.c ../../src/crossdb.c -O3 -march=native
+	$(CC) -o bench-crossdb bench-crossdb.c ../../src/crossdb.c -O3 -march=native -lpthread
 	./bench-crossdb
 
+build:
+	$(CC) -o bench-crossdb bench-crossdb.c -O2 -lcrossdb -lpthread 
+	$(CC) -o bench-sqlite bench-sqlite.c -O2 -lsqlite3 -lpthread 
+	$(CC) -o bench-stlmap bench-stlmap.cpp -std=c++17 -O2 -lpthread -lstdc++ -lm
+
+test: build
+	@echo
+	@echo "\n***************** CrossDB *****************\n" 
+	@./bench-crossdb -q -j -r 5 -n 1000
+	@./bench-crossdb -q -j -r 5 -n 10000
+	@./bench-crossdb -q -j -r 5 -n 100000
+	@./bench-crossdb -q -j -r 5 -n 1000000
+	@./bench-crossdb -q -j -r 5 -n 10000000
+
+	@echo
+	@echo "\n***************** STL Map & HashMap *****************\n"
+	@./bench-stlmap -q -j -r 5 -n 1000
+	@./bench-stlmap -q -j -r 5 -n 10000
+	@./bench-stlmap -q -j -r 5 -n 100000
+	@./bench-stlmap -q -j -r 5 -n 1000000
+	@./bench-stlmap -q -j -r 5 -n 10000000
+
+	@echo
+	@echo "\n***************** SQLite *****************\n"
+	@./bench-sqlite -q -j -r 5 -n 1000
+	@./bench-sqlite -q -j -r 5 -n 10000
+	@./bench-sqlite -q -j -r 5 -n 100000
+	@./bench-sqlite -q -j -r 5 -n 1000000
+	@./bench-sqlite -q -j -r 5 -n 10000000
+
 clean:
-	rm -f a.out bench-crossdb bench-sqlite *.txt
+	rm -f a.out bench-crossdb bench-sqlite bench-stlmap *.txt