Programs for handling SQL commands. The "core" of MySQL.
These are the .c
and .cc
files in the sql
directory:
- derror.cc --- read language-dependent message file
- des_key_file.cc --- load DES keys from plaintext file
- discover.cc --- Functions for discovery of
.frm
file from handler - field.cc --- "implement classes defined in
field.h
" (long); defines all storage methods MySQL
uses to store field information into records that are then passed to
handlers - field_conv.cc --- functions to copy data between fields
- filesort.cc --- sort a result set, using memory or temporary files
- frm_crypt.cc --- contains only one short function:
get_crypt_for_frm
- gen_lex_hash.cc --- Knuth‘s algorithm from Vol 3 Sorting and Searching,
Chapter 6.3; used to search for SQL keywords in a query - gstream.cc --- GTextReadStream, used to read GIS objects
- handler.cc --- handler-calling functions
- hash_filo.cc --- static-sized hash tables, used to store info like hostname
-> ip tables in a FIFO manner - ha_berkeley.cc --- Handler: BDB
- ha_blackhole.cc --- Handler: Black Hole
- ha_federated.cc --- Handler: Federated
- ha_heap.cc --- Handler: Heap
- ha_innodb.cc --- Handler: InnoDB
- ha_myisam.cc --- Handler: MyISAM
- ha_myisammrg.cc --- Handler: (MyISAM MERGE)
- ha_ndbcluster.cc --- Handler: NDB
- hostname.cc --- Given IP, return hostname
- init.cc --- Init and dummy functions for interface with unireg
- item.cc --- Item functions
- item_buff.cc --- Buffers to save and compare item values
- item_cmpfunc.cc --- Definition of all compare functions
- item_create.cc --- Create an item. Used by
lex.h
. - item_func.cc --- Numerical functions
- item_geofunc.cc --- Geometry functions
- item_row.cc --- Row items for comparing rows and for
IN
on
rows - item_strfunc.cc --- String functions
- item_subselect.cc --- Subqueries
- item_sum.cc --- Set functions (
SUM()
,AVG()
,
etc.) - item_strfunc.cc --- String functions
- item_subselect.cc --- Item subquery
- item_timefunc.cc --- Date/time functions, for example, week of year
- item_uniq.cc --- Empty file, here for compatibility reasons
- key.cc --- Functions to create keys from records and compare a key to a key
in a record - lock.cc --- Locks
- log.cc --- Logs
- log_event.cc --- Log event (a binary log consists of a stream of log
events) - matherr.c --- Handling overflow, underflow, etc.
- mf_iocache.cc --- Caching of (sequential) reads and writes
- mysqld.cc --- Source for
mysqld.exe
;
includes themain()
program that
startsmysqld
, handling of signals and
connections - mf_decimal.cc --- New decimal and numeric code
- my_lock.c --- Lock part of a file (like
/mysys/my_lock.c
, but with timeout handling for
threads) - net_serv.cc --- Read/write of packets on a network socket
- nt_servc.cc --- Initialize/register/remove an NT service
- opt_range.cc --- Range of keys
- opt_sum.cc --- Optimize functions in presence of (implied)
GROUP BY
- parse_file.cc --- Text
.frm
files
management routines - password.c --- Password checking
- procedure.cc --- Procedure interface, as used in
SELECT * FROM Table_name PROCEDURE ANALYSE()
- protocol.cc --- Low level functions for PACKING data that is sent to
client; actual sending done withnet_serv.cc
- protocol_cursor.cc --- Low level functions for storing data to be sent to
the MySQL client - records.cc --- Functions for easy reading of records, possible through a
cache - repl_failsafe.cc --- Replication fail-save (not yet implemented)
- set_var.cc --- Set and retrieve MySQL user variables
- slave.cc --- Procedures for a slave in a master/slave (replication)
relation - sp.cc --- DB storage of stored procedures and functions
- sp_cache.cc --- For stored procedures
- sp_head.cc --- For stored procedures
- sp_pcontext.cc --- For stored procedures
- sp_rcontext.cc --- For stored procedures
- spatial.cc --- Geometry stuff (lines, points, etc.)
- sql_acl.cc --- Functions related to ACL security; checks, stores,
retrieves, and deletes MySQL user level privileges - sql_analyse.cc --- Implements the
PROCEDURE
, which analyzes a query result and returns the ‘optimal‘ data
ANALYSE()
type for each result column - sql_base.cc --- Basic functions needed by many modules, like opening and
closing tables with table cache management - sql_cache.cc --- SQL query cache, with long comments about how caching
works - sql_class.cc --- SQL class; implements the SQL base classes, of which THD
(THREAD object) is the most important - sql_client.cc --- A function called by my_net_init() to set some check
variables - sql_crypt.cc --- Encode / decode, very short
- sql_db.cc --- Create / drop database
- sql_delete.cc --- The
DELETE
statement - sql_derived.cc --- Derived tables, with long comments
- sql_do.cc --- The
DO
statement - sql_error.cc --- Errors and warnings
- sql_handler.cc --- Implements the
HANDLER
interface, which gives direct access to
rows inMyISAM
andInnoDB
- sql_help.cc --- The
HELP
statement - sql_insert.cc --- The
INSERT
statement - sql_lex.cc --- Does lexical analysis of a query; that is, breaks a query
string into pieces and determines the basic type (number, string, keyword,
etc.) of each piece - sql_list.cc --- Only list_node_end_of_list, short (the rest of the list
class is implemented insql_list.h
) - sql_load.cc --- The
LOAD
statement
DATA - sql_manager.cc --- Maintenance tasks, for example, flushing the buffers
periodically; used withBDB
table
logs - sql_map.cc --- Memory-mapped files (not yet in use)
- sql_olap.cc ---
ROLLUP
- sql_parse.cc --- Parse an SQL statement; do initial checks and then jump to
the function that should execute the statement - sql_prepare.cc --- Prepare an SQL statement, or use a prepared
statement - sql_rename.cc --- Rename table
- sql_repl.cc --- Replication
- sql_select.cc --- Select and join optimization
- sql_show.cc --- The
SHOW
statement - sql_state.c --- Functions to map mysqld errno to sqlstate
- sql_string.cc --- String functions: alloc, realloc, copy, convert, etc.
- sql_table.cc --- The
DROP
and
TABLEALTER
statements
TABLE - sql_test.cc --- Some debugging information
- sql_trigger.cc --- Triggers
- sql_udf.cc --- User-defined functions
- sql_union.cc --- The
UNION
operator - sql_update.cc --- The
UPDATE
statement - sql_view.cc --- Views
- stacktrace.c --- Display stack trace (Linux/Intel only)
- strfunc.cc --- String functions
- table.cc --- Table metadata retrieval; read the table definition from
a.frm
file and store it in
aTABLE
object - thr_malloc.cc --- Thread-safe interface to
/mysys/my_alloc.c
- time.cc --- Date and time functions
- udf_example.cc --- Example file of user-defined functions
- uniques.cc --- Function to handle quick removal of duplicates
- unireg.cc --- Create a unireg format file (
.frm
) from aFIELD
and field-info struct
目录清单
目录名 注释
Bdb 伯克利DB表引擎
BUILD 构建工程的脚本
Client 客户端
Cmd-line-utils 命令行工具
Config 构建工程所需的一些文件
Dbug Fred Fish的调试库
Docs 文档文件夹
Extra 一些相对独立的次要的工具
Heap HEAP表引擎
Include 头文件
Innobase INNODB表引擎
Libmysql 动态库
Libmysql_r 为了构建线程安全的libmysql库
Libmysqld 服务器作为一个嵌入式的库
Man 用户手册
Myisam MyISAM表引擎
Myisammrg MyISAM Merge表引擎
Mysql-test mysqld的测试单元
Mysys MySQL的系统库
Ndb Mysql集群
Netware Mysql网络版本相关文件
NEW-RPM 部署时存放RPM
Os2 针对OS/2操作系统的底层函数
Pstack 进行堆栈
Regex 正则表达式库(包括扩展的正则表达式函数)
SCCS 源码控制系统(不是源码的一部分)
Scripts 批量SQL脚本,如初始化库脚本
Server-tools 管理工具
Sql 处理SQL命令;Mysql的核心
Sql-bench Mysql的标准检查程序
Sql-common 一些sql文件夹相关的C文件
SSL 安全套接字层
Strings 字符串函数库
Support-files 用于在不同系统上构建Mysql的文件
Tests 包含Perl和C的测试
Tools
Vio 虚拟I/O库
Zlib 数据压缩库,用于WINDOWS
下面给出几个比较重要的目录清单:
文件清单
目录名 文件名 注释
Client
get_password.c 命令行输入密码
Mysql.cc MySQL命令行工具
Mysqladmin.cc 数据库weihu
Mysqldump.c 将表的内容以SQL语句输出,即逻辑备份
Mysqlimport.c 文本文件数据导入表中
Mysqlmanager-pwgen.c 密码生成
Mysqlshow.c 显示数据库,表和列
Mysqltest.c 被mysql测试单元使用的测试程序
----------------------------------------------------------------------------------------------------------------
MYSYS
Array.c 动态数组
Charset.c 动态字符集,默认字符集
Charset-def.c 包含客户端使用的字符集
Checksum.c 为内存块计算校验和,用于pack_isam
Default.c 从*.cnf和*.ini文件中查找默认配置项
Default_modify.c 编辑可选项
Errors.c 英文错误文本
Hash.c hash查找、比较、释放函数
List.c 双向链表
Make-conf.c 创建*.conf文件
Md5.c MD5算法
Mf_brkhant.c
Mf_cache.c 打开临时文件,并使用io_cache进行缓存
Mf_driname.c 解析,转换路径名
Mf_fn_ext.c 获取文件名的后缀
Mf_format.c 格式化文件名
Mf_getdate 获取日期:
yyyy-mm-dd hh:mm:ss format
mf_iocache.c 缓存I/O
mf_iocaches.c 多键值缓存
mf_loadpath.c 获取全路径名
mf_pack.c 创建需要的压缩/非压缩文件名
mf_path.c 决定是否程序可以找到文件
mf_qsort.c 快速排序
mf_qsort2.c 快速排序2
mf_radix.c 基数排序
mf_soundex.c 探测算法(EDN NOV 14, 1985)
mf_strip.c 去字符串结尾空格
mf_tempdir.c 临时文件夹的创建、查找、删除
mf_tempfile.c 临时文件的创建
mf_unixpath.c 转化文件名为UNIX风格
mf_util.c 常用函数
mf_wcomp.c 使用通配符比较
mf_wfile.c 通配符查找文件
mulalloc.c 同时分配多个指针
my_access.c 检查文件或路径是否合法
my_aes.c AES加密算法
my_alarm.c 警报相关
my_alloc.c 同时分配临时结果集缓存
my_append.c 一个文件到另一个
my_bit.c 除法使用,位运算
my_bitmap.c 位图
my_chsize.c 填充或截断一个文件
my_clock.c 时钟函数
my_compress.c 压缩
my_copy.c 拷贝文件
my_crc32.c
my_create.c 创建文件
my_delete.c 删除文件
my_div.c 获取文件名
my_dup.c 打开复制文件
my_error.c 错误码
my_file.c
my_fopen.c 打开文件
my_fstream.c 文件流读/写
my_gethostbyname.c 获取主机名
my_gethwaddr.c 获取硬件地址
my_getopt.c 查找生效的选项
my_getsystime.c time of day
my_getwd.c 获取工作目录
my_handler.c
my_init.c 初始化变量和函数
my_largepage.c 获取OS的分页大小
my_lib.c 比较/转化目录名和文件名
my_lock.c 锁住文件
my_lockmem.c 分配一块被锁住的内存
my_lread.c 读取文件到内存
my_lwrite.c 内存写入文件
my_malloc.c 分配内存
my_messnc.c 标准输出上输出消息
my_mkdir.c 创建目录
my_mmap.c 内存映射
my_net.c net函数
my_netware.c Mysql网络版
my_once.c 一次分配,永不free
my_open.c 打开一个文件
my_os2cond.c 操作系统cond的简单实现
my_os2dirsrch.c 模拟Win32目录查询
my_os2dlfcn.c 模拟UNIX动态装载
my_os2file64.c 文件64位设置
my_os2mutex.c 互斥量
my_os2thread.c 线程
my_os2tls.c 线程本地存储
my_port.c
my_pthread.c 线程的封装
my_quick.c 读/写
my_read.c 从文件读bytes
my_realloc.c 重新分配内存
my_redel.c 重命名和删除文件
my_seek.c 查找
my_semaphore.c 信号量
my_sleep.c 睡眠等待
my_static.c 静态变量
my_symlink.c 读取符号链接
my_symlink2.c 2
my_sync.c 同步内存和文件
my_thr_init.c 初始化/分配线程变量
my_wincond.c
my_windac.c WINDOWS NT/2000自主访问控制
my_winsem.c 模拟线程
my_winthread.c 模拟线程
my_write.c 写文件
ptr_cmp.c 字节流比较函数
queue,c 优先级队列
raid2.c 支持RAID
rijndael.c AES加密算法
safemalloc.c 安全的malloc
sha1.c sha1哈希加密算法
string.c 字符串函数
testhash.c 测试哈希函数(独立程序)
test_charset 测试字符集(独立)
thr_lock.c 读写锁
thr_mutex.c 互斥量
thr_rwlock.c 同步读写锁
tree.c 二叉树
typelib.c 字符串中匹配字串
SQL
derror.cc 读取独立于语言的信息文件
Des_key_file.cc 加载DES密钥
Discover.cc frm文件的查找
Field.cc 存储列信息
Filed_conv.cc 拷贝字段信息
Filesort.cc 结果集排序(内存或临时文件)
Frm_crypt.cc get_crypt_from_frm
Gen_lex_hash.cc 查找、排列SQL关键字
Gstream.c GIS
Handler.cc 函数句柄
Hash_filo.cc 静态大小HASH表,
以FIFO方式存储主机名、IP表
Ha_berkeley.cc BDB的句柄
Ha_innodb.cc INNODB句柄
Hostname.cc 根据IP获取hostname
Init.cc 初始化和unireg相关的函数
item.cc item函数
item_buff.cc item的保存和比较的缓存
item_cmpfunc.cc 比较函数的定义
item_create.cc 创建一个item
item_func.cc 数字函数
item_geofunc.cc 集合函数
item_row.cc 记录项比较
item_strfunc.cc 字符串函数
item_subselect.cc 子查询
item_sum.cc 集函数(SUM,AVG...)
item_timefunc.cc 时间日期函数
item_uniq.cc 空文件
Key.cc 创建KEY以及比较
Lock.cc 锁
Log.cc 日志
log_event.cc 日志事件
Matherr.c 处理溢出
mf_iocache.cc 顺序读写的缓存
Mysqld.cc main,处理信号和连接
mf_decimal.cc decimal类型
my_lock.c
net_serv.cc socket数据包的解析
nt_servc.cc NT服务
opt_range.cc KEY排序
opt_sum.cc 集函数优化
parse_file.cc frm解析
Password.c 密码检查
Procedure.cc
Protocol.cc 数据包打包发送给客户端
protocol_cursor.cc 存储返送数据
Records.cc 读取记录集
repl_failsafe.cc
set_var.cc 设置、读取用户变量
Slave.cc slave节点
Sp.cc 存储过程和存储函数
sp_cache.cc
sp_head.cc
sp_pcontext.cc
sp_rcontext.cc
Spatial.cc 集合函数,点线面
Sql_acl.cc ACL
sql_analyse.cc
sql_base.cc 基础函数
sql_cache.cc 查询缓存
sql_client.cc
sql_crypt.cc 加解密
sql_db.cc 创建、删除DB
sql_delete.cc DELETE语句
sql_derived.cc 派生表
sql_do.cc DO
sql_error.cc 错误和警告
sql_handler.cc
sql_help.cc HELP
sql_insert.cc INSERT
sql_lex.cc 词法分析
sql_list.cc
sql_load.cc LOAD DATA 语句
sql_manager.cc 维护工作
sql_map.cc 内存映射
sql_olap.cc
sql_parse.cc 解析语句
sql_prepare.cc
sql_rename.cc 重命名table名
sql_repl.cc 复制
sql_select.cc SELECT和JOIN优化
sql_show.cc SHOW
sql_state.c 错误号和状态的映射
sql_string.cc
sql_table.cc DROP TABLE、ALTER TABLE
sql_trigger.cc 触发器
sql_udf.cc 用户自定义函数
sql_union.cc UNION操作符
sql_update.cc UPDATE
sql_view.cc 视图
Stacktrace.c 显示堆栈(LINUX/INTEL ONLY)
Strfunc.cc
Table.cc 表元数据获取(FRM)
thr_malloc.cc
Time.cc
Uniques.cc 副本的快速删除
Unireg.cc 创建一个FRM
参考:
http://dev.mysql.com/doc/internals/en/sql-directory.html
http://www.cnblogs.com/nocode/archive/2011/08/12/2135791.html