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 | 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;
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