mysql - 如何使用 Knex raw 在 MySQL 中创建存储过程

Question

我正在使用 Adonis，它在底层使用 Knex。我想创建这个存储过程

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;

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 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

我尝试将自己的 \n 标记放入 SQL 中，但它们被删除了。

知道谁让 knex.raw 运行我给它的内容，而不是取出标签。

Answer 1

这应该有帮助。这里我写了一个knex-migrate期望的模块。适应您的需求应该不成问题。

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');