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@icreate/ics-db-migrate

v0.0.4

Published

``` npm i @icreate/ics-db-migrate ```

Downloads

7

Readme

安装

npm i @icreate/ics-db-migrate

引用

  • DataType 数据类型。
  • DBType 数据库类型枚举。
import { createDBMigrate, DataType as type, DBType } from @icreate/ics-db-migrate

创建 DBMigrate

  • 现支持 mssql 及 Oracle 数据库
var sqlBuilder = createDBMigrate(DBType.mssql)

建表

  • createTable 入参:表名,列定义,表中文名
  • 列定义:
{
    name: string                    // 中文名
    primaryKey: boolean             // 主键
    notNull: boolean                // 不可为空
    autoIncrement: boolean          // 自增
    type: string                    // 数据类型
    length: number                  // 长度
    precision: number               // 精度
    comment: string                 // 说明
    defaultValue: string | number   // 默认值
    foreignKey: {                   // 外键
      name: string                  // 外键名
      table: string                 // 关联表
      mapping: string               // 关联列
    }
}
// 创建列定义

var colOptions = {
  ID: {
    name: '主键ID',
    primaryKey: true,
    notNull: true,
    type: type.VarChar,
    length: 50
  },
  NAME: {
    name: '名称',
    notNull: true,
    type: type.VarChar,
    length: 200
  },
  SEX: {
    name: '性别',
    notNull: true,
    type: type.VarChar,
    length: 20
  },
  AGE: {
    name: '年龄',
    notNull: true,
    type: type.Int
  }
}

sqlBuilder.createTable('TEST', colOptions, '测试表')

TRUNCATE 表

  • truncate 入参:表名
sqlBuilder.truncate('TEST')

创建视图

  • createView 入参:视图名,查询 SQL
sqlBuilder.createView('VIEW_TEST', `SELECT ID, NAME, AGE FROM TEST`)

创建函数

  • createView 入参:函数名,函数创建 SQL
// 函数SQL

const SQL =
`
create function FUNC_TEST
([p1,p2...pn])
return datatype
is|as
--声明部分
begin
--PL/SQL程序块
end
`

sqlBuilder.createFunction('FUNC_TEST', SQL)

创建存储过程

  • createProcedure 入参:存储过程名,存储过程创建 SQL
// 存储过程SQL

const SQL =
`
create procedure 存储过程名(param1 in type,param2 out type)
as
  变量1 类型(值范围);
  变量2 类型(值范围);
begin
  select count(*) into 变量1 from 表A where列名=param1;
  if (判断条件) then
  select 列名 into 变量2 from 表A where列名=param1;
  dbms_output.Put_line('打印信息');
  elsif (判断条件) then
  dbms_output.Put_line('打印信息');
  else
  raise 异常名(NO_DATA_FOUND);
  end if;
exception
  when others then
  rollback;
end;
`

sqlBuilder.createProcedure('PROC_TEST', SQL)

DROP 表

  • dropTable 入参:表名
sqlBuilder.dropTable('TEST')

DROP 视图

  • dropView 入参:视图名
sqlBuilder.dropView('VIEW_TEST')

DROP 函数

  • dropFunction 入参:函数名
sqlBuilder.dropFunction('FUNC_TEST')

DROP 存储过程

  • dropProcedure 入参:存储过程名
sqlBuilder.dropProcedure('PROC_TEST')

新增列

  • addColumn 入参:表名,列名,列定义(如上:建表列定义)
// 列定义

const option = {
  name: '备注',
  type: type.VarChar,
  length: 1000
}

sqlBuilder.addColumn('TEST', 'REMARK', option)

删除列

  • removeColumn 入参:表名,列名
sqlBuilder.removeColumn('TEST', 'REMARK')

修改列

  • changeColumn 入参:表名,列名,列定义(如上:建表列定义)
option.length = 2000

sqlBuilder.changeColumn('TEST', 'REMARK', option)

新增索引

  • addIndex 入参:表名,索引名,列集合,是否唯一索引
sqlBuilder.addIndex('TEST', 'IX_TEST_NAME', ['NAME'], false)

删除索引

  • removeIndex 入参:表名,索引名
sqlBuilder.removeIndex('TEST', 'IX_TEST_NAME')

insert

  • insert 入参:表名,数据对象或数组
var data = {
  ID: '123456789',
  NAME: '666666',
  SEX: '男',
  AGE: 19
}

sqlBuilder.insert('TEST', data)

update

  • update 入参:表名,数据对象,条件对象
var data = {
  SEX: '男',
  AGE: 19
}

var where = {
  ID: '123456789'
}

sqlBuilder.update('TEST', data, where)

remove

  • remove 入参:表名,条件对象
var where = {
  ID: '123456789'
}

sqlBuilder.remove('TEST', where)

新增外键

  • addForeignKey 入参:外键名称,表名,列名,外键表名,字段映射,约束规则
sqlBuilder.addForeignKey('fk_test','TEST','NAME','TEST2','NAME')

删除外键

  • removeForeignKey 入参:表名,外键名称
sqlBuilder.removeForeignKey('TEST','fk_test')

获取sql

  • text
var sqlText = sqlBuilder.text()