metaquery
通过元数据定义查询对象提供数据服务
定义查询对象
const {
MetaTable
} = require('@saas-plat/metaquery');
const BankAccountTable = MetaTable.createModel('BankAccountTable',{
fields:{
"Code": {type:"string",mapping:'code'},
"Name": {type:"string",mapping:'name'},
"NewBalance": "number"
}
});查询对象类型与服务
- 数据表
- 汇总表
- 树表
- 联合表
数据迁移
const datamigration = new Migration([BankAccountTable1], [BankAccountTable2]);
await datamigration.backup();
datamigration.onAction(()=>{
// 升级规则
...
})
await datamigration.up('v1','v2');
await datamigration.dropback();