服务器 4 分钟· 更新于 2026-10-16
SQL Server 2019/2022：Standard vs Enterprise — 没有它会缺什么
Enterprise 价格约为 4 倍。真正值得它的功能 — 以及 Standard 完全够用的场景。
SQL Server licensing is per-core (Enterprise/Standard) or per-server+CAL (Standard only). The price gap is significant, so the question is never "which is better" but "which features do you actually use".
| Feature | Standard | Enterprise |
|---|---|---|
| Buffer pool memory limit | 128 GB | OS max |
| Cores usable per instance | 4 sockets / 24 cores | Unlimited |
| Online index rebuilds | — | ✓ |
| Always On availability groups | Basic (2-node, 1 DB) | Full AGs |
| Table/index partitioning | — | ✓ |
| Transparent data encryption | ✓ (2019+) | ✓ |
| Resource Governor | — | ✓ |
| In-memory OLTP scale | Capped | Full |
When Standard is enough
- •Databases comfortably under a few hundred GB with normal workloads
- •No need for online index maintenance during business hours
- •Single-instance deployments with log shipping or basic AG for DR
- •Budget matters — Standard per-core is roughly a quarter of Enterprise
When you genuinely need Enterprise
- •Large databases needing partitioning or online index rebuilds
- •Full Always On AGs across multiple replicas
- •More than 128 GB buffer pool or more than 24 cores
- •Strict RTO/RPO requirements — multi-node failover
The overlooked option
Standard with Server+CAL licensing can undercut per-core pricing for small user counts — for internal tools with a known user base, do the CAL math before defaulting to cores.