如何从 sql 文件运行 typeorm mysql 命令？

Question

我想在从 sql 文件迁移时运行 mysql 命令。 有人可以帮助我，如何解决？

import {MigrationInterface, QueryRunner} from "typeorm";
import * as fs from "fs";

var queries = fs.readFileSync(__dirname + '/geoinfo.sql').toString()
    .replace(/(\r\n|\n|\r)/gm," ") // remove newlines
    .replace(/\s+/g, ' '); // excess white space

export class HungarianStatesAndCities1564393283405 implements MigrationInterface {

    public async up(queryRunner: QueryRunner): Promise<any> {
        await queryRunner.query(queries.toString() );
    }

    public async down(queryRunner: QueryRunner): Promise<any> {
        await queryRunner.query("");
    }
}

Answer 1

您可以通过 ';' 使用拆分查询并运行单独的查询

const readSqlFile = (filepath: string): string[] => {
      return fs
        .readFileSync(path.join(__dirname, filepath))
        .toString()
        .replace(/\r?\n|\r/g, '')
        .split(';')
        .filter((query) => query?.length);
    };

public async up(queryRunner: QueryRunner): Promise<void> {
    const queries = readSqlFile('/geoinfo.sql');

    for (let i = 0; i < queries.length; i++) {
      await queryRunner.query(queries[i]);
    }
  }

Answer 2

在 npm 中封装到库中。 现在您可以轻松地将它包含在您的项目中。 https://www.npmjs.com/package/node-sql-reader