SHOW PLACEMENT

SHOW PLACEMENT 汇总了直接放置 (direct placement) 和放置策略 (placement policy) 中的所有放置选项,并以规范的形式呈现这些选项信息。

语法图

ShowStmt
PLACEMENT

示例

CREATE PLACEMENT POLICY p1 PRIMARY_REGION="us-east-1" REGIONS="us-east-1,us-west-1" FOLLOWERS=4; CREATE TABLE t1 (a INT) PLACEMENT POLICY=p1; CREATE TABLE t2 (a INT) PRIMARY_REGION="us-east-1" REGIONS="us-east-1,us-west-1" FOLLOWERS=4; SHOW PLACEMENT;
Query OK, 0 rows affected (0.01 sec) Query OK, 0 rows affected (0.00 sec) Query OK, 0 rows affected (0.00 sec) +---------------+----------------------------------------------------------------------+------------------+ | Target | Placement | Scheduling_State | +---------------+----------------------------------------------------------------------+------------------+ | POLICY p1 | PRIMARY_REGION="us-east-1" REGIONS="us-east-1,us-west-1" FOLLOWERS=4 | NULL | | DATABASE test | PRIMARY_REGION="us-east-1" REGIONS="us-east-1,us-west-1" FOLLOWERS=4 | INPROGRESS | | TABLE test.t1 | PRIMARY_REGION="us-east-1" REGIONS="us-east-1,us-west-1" FOLLOWERS=4 | INPROGRESS | | TABLE test.t2 | PRIMARY_REGION="us-east-1" REGIONS="us-east-1,us-west-1" FOLLOWERS=4 | INPROGRESS | +---------------+----------------------------------------------------------------------+------------------+ 4 rows in set (0.00 sec)

MySQL 兼容性

该语句是 TiDB 对 MySQL 语法的扩展。

另请参阅

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