ALTER TABLE 命令的锁定级别降低
已记录的来源状态与原始语言说明；缺少版本证据时明确标为未知。
来源快照记录 PostgreSQL 8.1–18 的变化节点；历史矩阵独立记录 7.4–18 的状态。两者均未记录 PostgreSQL 19 或 20 的支持状态，较新版本明确保留为未知。这些来源声明与运行测量相互独立。
性能
说明
以下命令现在具有更低的锁定级别以减少锁竞争：
VALIDATE CONSTRAINT
CLUSTER ON SET WITHOUT CLUSTER
ALTER COLUMN SET STATISTICS ALTER COLUMN SET () ALTER COLUMN RESET ()
所选版本: PostgreSQL 18
不支持
比较版本
原始文档链接
相关来源快照条目 · 此关系来自原始来源；两组矩阵各自保留独立状态。
完整来源事实与出处
legacy · center · a2d7b2bda0547c4056800770017cdd187e1c7eae6224b0a2a18a2c7457c88f22
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