btree.c A B-tree implementation in C. Features Generic interface with support for variable sized items Fast sequential bulk loading Copy-on-write support Supports C99 and up Supports custom allocators 100% code coverage Pretty darn good performance 🚀 ...
头文件: /* * implementation of btree algorithm, base on <<Introduction to algorithm>> * author: lichuang * blog: www.cppblog.com/converse */ #ifndef __BTREE_H__ #define__BTREE_H__ #defineM 4 #defineKEY_NUM (2 * M - 1) typedefinttype_t; typedefstructbtree_t { intnum;/*number...
头文件: <!-- Code highlighting produced by Actipro CodeHighlighter (freeware) http://www.CodeHighlighter.com/ -->/* * implementation of btree algorithm, base on <<Introduction to algorithm>> * author: lichuang * blog: www.cppblog.com/converse */ #ifndef __BTREE_H__ #define__BTREE_H__...
a normal ScanKey array except that: * sk_flags must include SK_ROW_MEMBER, plus SK_ROW_END in the last * element (needed since row header does not include a count) * sk_func points to the btree comparison support function for the * opclass, NOT the operator's implementation function....
C-Store最早引入了 一 种改进想蓓,井被商业数据仓库 Vertica。 最后,面相列存储通常会具备多个排序顺序,但是多列排序很难维护,所以更常见的情况是引入二级索引维护,和行存储的索引维护不同,行存储的二级索引通常指向数据行(或者像InnoDB一样指向主键,不过这种处理比较特殊),列存储二级索引通常指向值。
btree_example.c Repository files navigation README BSD-3-Clause license There are a number of btree (and variants) implementations around, but for many reasons like complexity and tight coupling with external code bases, or licensing issues, to find an easy to embed implementation of an on di...
This is a fast B+ tree implementation, largely compatible with the standard Map, but with a much more diverse and powerful API. To use it,import BTree from 'sorted-btree'. BTreeis faster and/or uses less memory than other popular JavaScript sorted trees (see Benchmarks). However, data ...
* An implementation of a B Tree * @author morin * * @param */ public class BTreeimplements SSet{ Factoryf; protected Comparatorc; /** * The maximum number of children of a node (an odd number) */ int b; /** b div 2 */ ...
实验在go语言环境下进行,map 使用 golang 的 map 实现,B-Tree使用Google的BTree implementation for Go ( https:///google/btree ) 。 key 和 value 都是 string 类型(我们更多关心它的大小而不是类型)。实验的结果数据如下 : 上图中可以看到:
C-Store最早引入了 一 种改进想蓓,井被商业数据仓库 Vertica。 最后,面相列存储通常会具备多个排序顺序,但是多列排序很难维护,所以更常见的情况是引入二级索引维护,和行存储的索引维护不同,行存储的二级索引通常指向数据行(或者向InnoDB一样指向主键,不过这种处理比较特殊),列存储二级索引通常指向值。