Strange behavior of transcations
| От | Hui Jackson |
|---|---|
| Тема | Strange behavior of transcations |
| Дата | |
| Msg-id | CAHXAyjyT2zDt9Ozq-VnM80x7f3tm0yJt3uUaWCkR8bfLvfLwJA@mail.gmail.com обсуждение исходный текст |
| Ответы |
Re: Strange behavior of transcations
|
| Список | pgsql-sql |
I am working on node-postgres and there is a strange transactions.
The function aims at locking user's wallet until the refund process is complete, then will update item's has_refund to true.
The problem I am facing is the program return no error, but the database is not updated. Unless I spam the function for multiple times then the value is updated.
If I remove begin and commit, then the function work perfectly.
The problem I am facing is the program return no error, but the database is not updated. Unless I spam the function for multiple times then the value is updated.
If I remove begin and commit, then the function work perfectly.
const refundService = (itemId) =>{
await pgPool.query('BEGIN;');
const users = (await pgPool.query('SELECT * from app_user where $1=ANY(purchase_list);', [ itemId ])).rows;
for(let i = 0; i < users.length; i++){
refund(users[i])
}
await pgPool.query('UPDATE item_lists SET has_refund = $1 where id = $2;', [true, itemId ]);
await pgPool.query('COMMIT;');
}
const refund = (user) =>{
const refund = 10
await pgPool.query('UPDATE app_user SET wallet = wallet + $1', [refund ]);
}
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