ainvest

Microsoft's Real Regulatory Target Is the Bundle That Carries Its Margins

UK CMA proposes designating Microsoft with "strategic market status" for business software, triggering potential conduct ...

Why Oracle settings time-travel every time you restart

Hello, this is Udon 🍜Newbie: "The OPEN_CURSORS I set to 400 last week went back to 300 after the Sunday restart." Udon: "It went back to the past, then." Newbie: "Also, a setting that no one should ...
iMasters

PostgreSQL: password_encryption define o hash de senhas novas, não migra as antigas

Análise mostra que password_encryption no PostgreSQL só define o hash de senhas novas e não migra as antigas; entenda os ...
Opinion

8 Leading replacements for AWS DMS in streaming workloads

AWS Database Migration Service AWS DMS was originally designed for a specific task: lifting relational databases off on-premises servers and moving them into managed Amazon ...

17 Items to Check Before Upgrading to PostgreSQL 19—The One pg_upgrade --check Misses, and Inspection SQL (Measured on 18.6 and 19beta4)

The release notes for PostgreSQL 19 (scheduled for official release in October 2026) contain a section titled "Migration to ...
blog.csdn

修改表字段属性全指南：四大数据库语法对比与实操避坑

SQL Server 和 PostgreSQL 是"逐步调整派"，SQL Server 统一用 ALTER COLUMN，PostgreSQL 则把不同属性拆成多条 ALTER COLUMN 子句，改类型用 TYPE，改默认值用 SET DEFAULT，改可空性用 SET NOT NULL。 这样说有点抽象，直接看对比表最直观： ...