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Add missing example in ALTER PLACEMENT POLICY #8034

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TomShawn merged 1 commit into from
Apr 1, 2022
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Add missing example in ALTER PLACEMENT POLICY #8034

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5 changes: 5 additions & 0 deletions sql-statements/sql-statement-alter-placement-policy.md
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Expand Up @@ -9,6 +9,11 @@ summary: The usage of ALTER PLACEMENT POLICY in TiDB.

`ALTER PLACEMENT POLICY` _replaces_ the previous policy with the new definition. It does not _merge_ the old policy with the new one. In the following example, `FOLLOWERS=4` is lost when the `ALTER PLACEMENT POLICY` is executed:

```sql
CREATE PLACEMENT POLICY p1 FOLLOWERS=4;
ALTER PLACEMENT POLICY p1 PRIMARY_REGION="us-east-1" REGIONS="us-east-1,us-west-1";
```

## Synopsis

```ebnf+diagram
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