如何使用 Knex raw 在 MySQL 中创建存储过程 [英] How to create a stored procedure in MySQL with Knex raw

问题描述

我正在使用 Adonis，它在引擎盖下使用 Knex.我想创建这个存储过程

<预><代码>DROP PROCEDURE IF EXISTS fill_date_dimension;分隔符//CREATE PROCEDURE fill_date_dimension(IN startdate DATE,IN stopdate DATE)开始声明当前日期；SET 当前日期 = 开始日期；当当前日期<停止日期做INSERT INTO time_dimension VALUES (YEAR(当前日期)*10000+MONTH(当前日期)*100 + DAY(当前日期)，当前的日期，年(当前日期)，MONTH(当前日期)，DAY(当前日期)，季度(当前日期)，WEEKOFYEAR(当前日期)，DATE_FORMAT(当前日期，'%W')，DATE_FORMAT(当前日期，'%M')，'F'，CASE DAYOFWEEK(currentdate) WHEN 1 THEN 't' WHEN 7 then 't' ELSE 'f' END,空值);SET currentdate = ADDDATE(currentdate,INTERVAL 1 DAY);结束时；结尾//分隔符；TRUNCATE TABLE time_dimension;CALL fill_date_dimension('2018-01-01','2030-12-31');优化表 time_dimension;

问题是 knex raw，或者可能是 Adonis(我不知道)去掉了换行符.这给了我错误

DROP PROCEDURE IF EXISTS fill_date_dimension;DELIMITER//CREATE PROCEDURE fill_date_dimension(IN startdate DATE,IN stopdate DATE) BEGIN DECLARE currentdate DATE;SET 当前日期 = 开始日期；当当前日期

我曾尝试将我自己的 \n 标记放入 SQL，但它们被删除了.

知道让 knex.raw 运行我给它的东西，而不是去掉标签.

解决方案

这应该会有所帮助.这里我写了一个 knex-migrate 期望的模块.适应您的需求应该没有问题.

const mysql = require('mysql2');常量{数据库:{联系: {主机、用户、密码、数据库、端口}}} = require('./settings.js');export.up = async() =>{const 脚本 = `CREATE DEFINER=\`<YOUR_DB_USER>\`@\`%\` PROCEDURE \`fill_date_dimension\`(IN startdate DATE,IN stopdate DATE)开始声明当前日期；SET 当前日期 = 开始日期；当当前日期<停止日期做INSERT INTO time_dimension VALUES (YEAR(当前日期)*10000+MONTH(当前日期)*100 + DAY(当前日期)，当前的日期，年(当前日期)，MONTH(当前日期)，DAY(当前日期)，季度(当前日期)，WEEKOFYEAR(当前日期)，DATE_FORMAT(当前日期，'%W')，DATE_FORMAT(当前日期，'%M')，'F'，CASE DAYOFWEEK(currentdate) WHEN 1 THEN 't' WHEN 7 then 't' ELSE 'f' END,空值);SET currentdate = ADDDATE(currentdate,INTERVAL 1 DAY);结束时；结束`const 连接 = mysql.createConnection({主持人，用户，数据库，密码，港口});返回新的承诺(函数(解决，拒绝){连接.查询(脚本，功能(错误){如果(错误){返回拒绝(错误)；}返回解决()；});});};export.down = 异步 knex =>knex.raw('DROP PROCEDURE IF EXISTS fill_date_dimension');

I am using Adonis which uses Knex under the hood. I am want to create this stored procedure

DROP PROCEDURE IF EXISTS fill_date_dimension;
DELIMITER //
CREATE PROCEDURE fill_date_dimension(IN startdate DATE,IN stopdate DATE)
BEGIN
    DECLARE currentdate DATE;
    SET currentdate = startdate;
    WHILE currentdate < stopdate DO
        INSERT INTO time_dimension VALUES (
                        YEAR(currentdate)*10000+MONTH(currentdate)*100 + DAY(currentdate),
                        currentdate,
                        YEAR(currentdate),
                        MONTH(currentdate),
                        DAY(currentdate),
                        QUARTER(currentdate),
                        WEEKOFYEAR(currentdate),
                        DATE_FORMAT(currentdate,'%W'),
                        DATE_FORMAT(currentdate,'%M'),
                        'f',
                        CASE DAYOFWEEK(currentdate) WHEN 1 THEN 't' WHEN 7 then 't' ELSE 'f' END,
                        NULL);
        SET currentdate = ADDDATE(currentdate,INTERVAL 1 DAY);
    END WHILE;
END
//
DELIMITER ;

TRUNCATE TABLE time_dimension;

CALL fill_date_dimension('2018-01-01','2030-12-31');
OPTIMIZE TABLE time_dimension;

The problem is that knex raw, or may be Adonis (I don't know) strips out the line breaks. This gives me the error

DROP PROCEDURE IF EXISTS fill_date_dimension; DELIMITER // CREATE PROCEDURE fill_date_dimension(IN startdate DATE,IN stopdate DATE) BEGIN DECLARE currentdate DATE; SET currentdate = startdate; WHILE currentdate < stopdate DO INSERT INTO dates VALUES ( YEAR(currentdate)*10000+MONTH(currentdate)*100 + DAY(currentdate), currentdate, YEAR(currentdate), MONTH(currentdate), DAY(currentdate), QUARTER(currentdate), WEEKOFYEAR(currentdate), DATE_FORMAT(currentdate,'%W'), DATE_FORMAT(currentdate,'%M'), 'f', CASE DAYOFWEEK(currentdate) WHEN 1 THEN 't' WHEN 7 then 't' ELSE 'f' END, NULL); SET currentdate = ADDDATE(currentdate,INTERVAL 1 DAY); END WHILE; END // DELIMITER ; TRUNCATE TABLE dates; CALL fill_date_dimension('2018-01-01','2030-12-31'); OPTIMIZE TABLE time_dimension; - ER_PARSE_ERROR: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'DELIMITER // CREATE PROCEDURE fill_date_dimension(IN startdate DATE,IN sto' at line 4

I have tried putting my own \n tags into the SQL, but they are stripped out.

Any idea who to make knex.raw run what I give it, rather than taking out the tags.

解决方案

This should help. Here I wrote a module expected by knex-migrate. It should be no trouble to adapt to your need.

const mysql = require('mysql2');

const {
  database: {
    connection: {
      host, user, password, database, port
    }
  }
} = require('./settings.js');

exports.up = async () => {
  const script = `
    CREATE DEFINER=\`<YOUR_DB_USER>\`@\`%\` PROCEDURE \`fill_date_dimension\`(IN startdate DATE,IN stopdate DATE)
    BEGIN
        DECLARE currentdate DATE;
        SET currentdate = startdate;
        WHILE currentdate < stopdate DO
        INSERT INTO time_dimension VALUES (
                        YEAR(currentdate)*10000+MONTH(currentdate)*100 + DAY(currentdate),
                        currentdate,
                        YEAR(currentdate),
                        MONTH(currentdate),
                        DAY(currentdate),
                        QUARTER(currentdate),
                        WEEKOFYEAR(currentdate),
                        DATE_FORMAT(currentdate,'%W'),
                        DATE_FORMAT(currentdate,'%M'),
                        'f',
                        CASE DAYOFWEEK(currentdate) WHEN 1 THEN 't' WHEN 7 then 't' ELSE 'f' END,
                        NULL);
        SET currentdate = ADDDATE(currentdate,INTERVAL 1 DAY);
        END WHILE;
    END`

  const connection = mysql.createConnection({
    host,
    user,
    database,
    password,
    port
  });

  return new Promise(function (resolve, reject) {
    connection.query(
      script,
      function (err) {
        if (err) {
          return reject(err);
        }

        return resolve();
      }
    );
  });
};

exports.down = async knex => knex.raw('DROP PROCEDURE IF EXISTS fill_date_dimension');

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