# VeighNa框架的MySQL数据库接口
<p align="center">
<img src ="https://vnpy.oss-cn-shanghai.aliyuncs.com/vnpy-logo.png"/>
</p>
<p align="center">
<img src ="https://img.shields.io/badge/version-1.0.3-blueviolet.svg"/>
<img src ="https://img.shields.io/badge/platform-windows|linux|macos-yellow.svg"/>
<img src ="https://img.shields.io/badge/python-3.7|3.8|3.9|3.10-blue.svg" />
</p>
## 说明
基于peewee开发的MySQL数据库接口。
## 使用
### 全局配置
在VeighNa中使用MySQL时，需要在全局配置中填写以下字段信息：
|名称|含义|必填|举例|
|---------|----|---|---|
|database.name|名称|是|mysql|
|database.host|地址|是|localhost|
|database.port|端口|是|3306|
|database.database|实例|是|vnpy|
|database.user|用户名|是|root|
|database.password|密码|是|123456|
### 创建实例（Schema)
VeighNa不会主动为MySQL数据库创建实例，所以使用前请确保database.database字段中填写的的数据库实例已经创建了。
若实例尚未创建，可以使用【MySQL Workbench】客户端的【new_schema】进行操作。
### 字符串大小写敏感支持
由于peewee的建表功能限制，默认情况下在保存合约代码的【symbol】字段时，无法区分字符串大小写。如果影响使用，可按照以下方式手动修改MySQL数据表来解决：
```
# 用MySQL命令行工具连接数据库
# 选择数据实例
use vnpy;
# 修改四张表symbol字段的BINARY属性
ALTER TABLE `dbbaroverview` MODIFY COLUMN `symbol` VARCHAR(45) BINARY;
ALTER TABLE `dbtickoverview` MODIFY COLUMN `symbol` VARCHAR(45) BINARY;
ALTER TABLE `dbbardata` MODIFY COLUMN `symbol` VARCHAR(45) BINARY;
ALTER TABLE `dbtickdata` MODIFY COLUMN `symbol` VARCHAR(45) BINARY;
```
Raw data
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"author": "Xiaoyou Chen",
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"description": "# VeighNa\u6846\u67b6\u7684MySQL\u6570\u636e\u5e93\u63a5\u53e3\r\n\r\n<p align=\"center\">\r\n <img src =\"https://vnpy.oss-cn-shanghai.aliyuncs.com/vnpy-logo.png\"/>\r\n</p>\r\n\r\n<p align=\"center\">\r\n <img src =\"https://img.shields.io/badge/version-1.0.3-blueviolet.svg\"/>\r\n <img src =\"https://img.shields.io/badge/platform-windows|linux|macos-yellow.svg\"/>\r\n <img src =\"https://img.shields.io/badge/python-3.7|3.8|3.9|3.10-blue.svg\" />\r\n</p>\r\n\r\n## \u8bf4\u660e\r\n\r\n\u57fa\u4e8epeewee\u5f00\u53d1\u7684MySQL\u6570\u636e\u5e93\u63a5\u53e3\u3002\r\n\r\n## \u4f7f\u7528\r\n\r\n### \u5168\u5c40\u914d\u7f6e\r\n\r\n\u5728VeighNa\u4e2d\u4f7f\u7528MySQL\u65f6\uff0c\u9700\u8981\u5728\u5168\u5c40\u914d\u7f6e\u4e2d\u586b\u5199\u4ee5\u4e0b\u5b57\u6bb5\u4fe1\u606f\uff1a\r\n\r\n|\u540d\u79f0|\u542b\u4e49|\u5fc5\u586b|\u4e3e\u4f8b|\r\n|---------|----|---|---|\r\n|database.name|\u540d\u79f0|\u662f|mysql|\r\n|database.host|\u5730\u5740|\u662f|localhost|\r\n|database.port|\u7aef\u53e3|\u662f|3306|\r\n|database.database|\u5b9e\u4f8b|\u662f|vnpy|\r\n|database.user|\u7528\u6237\u540d|\u662f|root|\r\n|database.password|\u5bc6\u7801|\u662f|123456|\r\n\r\n### \u521b\u5efa\u5b9e\u4f8b\uff08Schema)\r\n\r\nVeighNa\u4e0d\u4f1a\u4e3b\u52a8\u4e3aMySQL\u6570\u636e\u5e93\u521b\u5efa\u5b9e\u4f8b\uff0c\u6240\u4ee5\u4f7f\u7528\u524d\u8bf7\u786e\u4fdddatabase.database\u5b57\u6bb5\u4e2d\u586b\u5199\u7684\u7684\u6570\u636e\u5e93\u5b9e\u4f8b\u5df2\u7ecf\u521b\u5efa\u4e86\u3002\r\n\r\n\u82e5\u5b9e\u4f8b\u5c1a\u672a\u521b\u5efa\uff0c\u53ef\u4ee5\u4f7f\u7528\u3010MySQL Workbench\u3011\u5ba2\u6237\u7aef\u7684\u3010new_schema\u3011\u8fdb\u884c\u64cd\u4f5c\u3002\r\n\r\n\r\n### \u5b57\u7b26\u4e32\u5927\u5c0f\u5199\u654f\u611f\u652f\u6301\r\n\r\n\u7531\u4e8epeewee\u7684\u5efa\u8868\u529f\u80fd\u9650\u5236\uff0c\u9ed8\u8ba4\u60c5\u51b5\u4e0b\u5728\u4fdd\u5b58\u5408\u7ea6\u4ee3\u7801\u7684\u3010symbol\u3011\u5b57\u6bb5\u65f6\uff0c\u65e0\u6cd5\u533a\u5206\u5b57\u7b26\u4e32\u5927\u5c0f\u5199\u3002\u5982\u679c\u5f71\u54cd\u4f7f\u7528\uff0c\u53ef\u6309\u7167\u4ee5\u4e0b\u65b9\u5f0f\u624b\u52a8\u4fee\u6539MySQL\u6570\u636e\u8868\u6765\u89e3\u51b3\uff1a\r\n\r\n```\r\n# \u7528MySQL\u547d\u4ee4\u884c\u5de5\u5177\u8fde\u63a5\u6570\u636e\u5e93\r\n\r\n# \u9009\u62e9\u6570\u636e\u5b9e\u4f8b\r\nuse vnpy;\r\n\r\n# \u4fee\u6539\u56db\u5f20\u8868symbol\u5b57\u6bb5\u7684BINARY\u5c5e\u6027\r\nALTER TABLE `dbbaroverview` MODIFY COLUMN `symbol` VARCHAR(45) BINARY;\r\n\r\nALTER TABLE `dbtickoverview` MODIFY COLUMN `symbol` VARCHAR(45) BINARY;\r\n\r\nALTER TABLE `dbbardata` MODIFY COLUMN `symbol` VARCHAR(45) BINARY;\r\n\r\nALTER TABLE `dbtickdata` MODIFY COLUMN `symbol` VARCHAR(45) BINARY;\r\n```\r\n",
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