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MySQL database adapter for VeighNa quant trading framework.

Project description

VeighNa框架的MySQL数据库接口

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 mysql
database.host 地址 localhost
database.port 端口 3306
database.database 实例 vnpy
database.user 用户名 root
database.password 密码 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;

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