In my particular case, I needed to create a table that made use of UUID( Universally Unique Identifiers), which is an identifier with a 128-bit quantity generated by an algorithm chosen to make it very unlikely that the same identifier will be generated by anyone else in the known universe...
https://www.postgresql.org/download/windows/ 建议下载高级安装包,不需要安装,直接使用。 下载win x64的版本(建议下载最新版本) http://www.enterprisedb.com/products/pgbindownload.do 例如 https://get.enterprisedb.com/postgresql/postgresql-9.6.2-3-windows-x64-binaries.zip 3 解压PostgreSQL安装包 postgres...
the current timestamp, and any random number. We can generate a UUID number by using this function. To use this function, we need to create an extension of UUID-OSSP in PostgreSQL.
PostgreSQL provides the incremental backup functionality to the user, in which the PostgreSQL server saves all user modified data or, we can say, different transactions such as update, insert and delete, and at the same time, it performs the write operation into a WAL log file. The WAL means...
DELETE /1.3/database/{uuid}/connection-pools/{pool_name} If you get no error, the name connection pool was deleted successfully. The delete command itself only returns a response status code 204 with no content. Summary The UpCloud API makes it simple to create and manage your connection poo...
This is because it requires reordering the rows to place the newly inserted row at the right position inside the clustered index. On the other hand, PostgreSQL uses heap instead of clustered primary key, thus using UUID as the primary key won't impact PostgreSQL's insertion performance. UUID...
➞ PostgreSQL Postgres is kind of weird here: changing the auto-increment start and increment values in Postgres involves theALTERkeyword and requires you to create a customSEQUENCEas a separate, single-row table that you’ll then insert into your employee table. ...
How to Promote a Read-Only Node Using the DigitalOcean API Create a personal access token and save it for use with the API. Send a PUT request to https://api.digitalocean.com/v2/databases/{database_cluster_uuid}/replicas/{replica_name}/promote. cURL Using cURL: curl -X PUT \ -H "...
The size of the hash is still 4 bytes larger than we expected. This is because thebyteatype uses an additional 4 bytes to store the length of the value. To strip off these 4 bytes, we can resort to some hackery. As it happens, theuuidtype in PostgreSQL is exactly 16 bytes,...
AddField 后和RunPython 前创建的对象保留原先重写的 uuid 值。 非原子性迁移¶ 对于支持 DDL 事务的数据库 (SQLite and PostgreSQL),迁移默认运行在事务内。对于类似在大数据表上运行数据迁移的场景,你可以通过将 atomic 属性置为 False 避免在事务中运行迁移: from django.db import migrations class Migration(...