sql - 在 LIKE 语句中对多个值进行序列化

Question

我正在尝试在 Sequelize 中复制此查询:

SELECT * FROM Employee WHERE name LIKE 'john%' or name LIKE 'jane%'

目前，我有这个:

where: {
  name: Sequelize.where(
    Sequelize.fn('LOWER', Sequelize.col(employee.name)),
    'LIKE',
    'john%'
  )
}

但是如何在 Sequelize 中处理多个 LIKE 语句呢？
我尝试将 Sequelize.where 的第三个参数转换为这样的数组:

where: {
  name: Sequelize.where(
    Sequelize.fn('LOWER', Sequelize.col(employee.name)),
    'LIKE',
    ['john%', 'jane%']
  )
}

但我收到此错误:SequelizeDatabaseError: Invalid usage of the option NEXT in the FETCH statement

Answer 1

下面是一个使用 "sequelize": "^5.21.3" 的例子:

import { sequelize } from '../../db';
import Sequelize, { Model, DataTypes, Op } from 'sequelize';

class Employee extends Model {}
Employee.init(
  {
    name: DataTypes.STRING,
  },
  { sequelize, modelName: 'Employee' },
);

(async function test() {
  try {
    await sequelize.sync({ force: true });
    // seed
    await Employee.bulkCreate([{ name: 'james' }, { name: 'JOHN' }, { name: 'JANE' }]);
    // test
    const result = await Employee.findAll({
      where: {
        name: {
          [Op.or]: [
            Sequelize.where(Sequelize.fn('LOWER', Sequelize.col('name')), 'LIKE', 'john%'),
            Sequelize.where(Sequelize.fn('LOWER', Sequelize.col('name')), 'LIKE', 'jane%'),
          ],
        },
      },
      raw: true,
    });
    console.log(result);
  } catch (error) {
    console.log(error);
  } finally {
    await sequelize.close();
  }
})();

执行结果:

Executing (default): DROP TABLE IF EXISTS "Employee" CASCADE;
Executing (default): DROP TABLE IF EXISTS "Employee" CASCADE;
Executing (default): CREATE TABLE IF NOT EXISTS "Employee" ("id"   SERIAL , "name" VARCHAR(255), PRIMARY KEY ("id"));
Executing (default): SELECT i.relname AS name, ix.indisprimary AS primary, ix.indisunique AS unique, ix.indkey AS indkey, array_agg(a.attnum) as column_indexes, array_agg(a.attname) AS column_names, pg_get_indexdef(ix.indexrelid) AS definition FROM pg_class t, pg_class i, pg_index ix, pg_attribute a WHERE t.oid = ix.indrelid AND i.oid = ix.indexrelid AND a.attrelid = t.oid AND t.relkind = 'r' and t.relname = 'Employee' GROUP BY i.relname, ix.indexrelid, ix.indisprimary, ix.indisunique, ix.indkey ORDER BY i.relname;
Executing (default): INSERT INTO "Employee" ("id","name") VALUES (DEFAULT,'james'),(DEFAULT,'JOHN'),(DEFAULT,'JANE') RETURNING *;
Executing (default): SELECT "id", "name" FROM "Employee" AS "Employee" WHERE (LOWER("name") LIKE 'john%' OR LOWER("name") LIKE 'jane%');
[ { id: 2, name: 'JOHN' }, { id: 3, name: 'JANE' } ]

数据库中的数据记录:

=# select * from "Employee";
 id | name
----+-------
  1 | james
  2 | JOHN
  3 | JANE
(3 rows)