如何在 Sequelize 中类型为 TIME 的列中创建位置？

Posted 2023-04-12

【中文标题】如何在 Sequelize 中类型为 TIME 的列中创建位置？

【英文标题】：How to make a where in a column with type TIME in Sequelize?

【发布时间】：2020-03-03 13:01:50

【问题描述】：

我有一些我使用 DataType.Time 的表：

startTime: 
  type: DataTypes.TIME,
  allowNull: false

当我提出请求时，结果是这样的：

"startTime": "14:27:00"

但是，如果我尝试在此列“startTime”中使用“14:27:00”创建一个简单的 WHERE，则不起作用。结果是无效的，有人知道为什么吗？

谢谢大家！

【问题讨论】：

我会检查您的数据库以查看 startTime 是否不止 14:27:00。 Sequelize 为 postgres 使用带区域的时间戳 DataTypes.TIME

man.... 不开玩笑，我什么也没做，现在可以工作 x(

【参考方案1】：

这是一个使用 "sequelize": "^5.21.3" 的工作示例：

index.ts:

import  sequelize  from '../../db';
import  Model, DataTypes  from 'sequelize';

class SomeModel extends Model 
SomeModel.init(
  
    startTime: 
      type: DataTypes.TIME,
      allowNull: false,
    ,
  ,
   sequelize, modelName: 'some_models' ,
);

(async function test() 
  try 
    await sequelize.sync( force: true );
    // seed
    await SomeModel.create( startTime: '14:27:00' );
    // test
    const rval = await SomeModel.findOne( where:  startTime: '14:27:00' , raw: true );
    console.log(rval);
   catch (error) 
    console.log(error);
   finally 
    await sequelize.close();
  
)();

执行结果：

Executing (default): DROP TABLE IF EXISTS "some_models" CASCADE;
Executing (default): DROP TABLE IF EXISTS "some_models" CASCADE;
Executing (default): CREATE TABLE IF NOT EXISTS "some_models" ("id"   SERIAL , "startTime" TIME NOT NULL, 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 = 'some_models' GROUP BY i.relname, ix.indexrelid, ix.indisprimary, ix.indisunique, ix.indkey ORDER BY i.relname;
Executing (default): INSERT INTO "some_models" ("id","startTime") VALUES (DEFAULT,$1) RETURNING *;
Executing (default): SELECT "id", "startTime" FROM "some_models" AS "some_models" WHERE "some_models"."startTime" = '14:27:00' LIMIT 1;
 id: 1, startTime: '14:27:00' 

查看数据库中的数据记录：

node-sequelize-examples=# select * from "some_models";
 id | startTime
----+-----------
  1 | 14:27:00
(1 row)

node-sequelize-examples=# \d+ some_models;
                                                      Table "public.some_models"
  Column   |          Type          |                        Modifiers                         | Storage | Stats target | Description
-----------+------------------------+----------------------------------------------------------+---------+--------------+-------------
 id        | integer                | not null default nextval('some_models_id_seq'::regclass) | plain   |              |
 startTime | time without time zone | not null                                                 | plain   |              |
Indexes:
    "some_models_pkey" PRIMARY KEY, btree (id)