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Update alter #1921

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merged 7 commits into from
Feb 7, 2023
Merged

Update alter #1921

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f1339f4
Update alter
foesa-yang Feb 2, 2023
01146da
Update docs-2.0/3.ngql-guide/10.tag-statements/3.alter-tag.md
cooper-lzy Feb 3, 2023
285bdd9
Update docs-2.0/3.ngql-guide/11.edge-type-statements/3.alter-edge.md
cooper-lzy Feb 3, 2023
068572a
Merge branch 'master' into restrict-schema-type
foesa-yang Feb 3, 2023
1c9f803
Update 3.alter-edge.md
abby-cyber Feb 3, 2023
64141b4
Update docs-2.0/3.ngql-guide/10.tag-statements/3.alter-tag.md
abby-cyber Feb 3, 2023
3a3aaf4
Update docs-2.0/3.ngql-guide/10.tag-statements/3.alter-tag.md
abby-cyber Feb 3, 2023
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8 changes: 8 additions & 0 deletions docs-2.0/3.ngql-guide/10.tag-statements/3.alter-tag.md
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Expand Up @@ -10,6 +10,11 @@

- The property name must be unique in a tag. If you add a property with the same name as an existing property or a dropped property, the operation fails.

- Only the length of a `FIXED_STRING` or an `INT` can be increased.

- Only the data type conversions from FIXED_STRING to STRING and from FLOAT to DOUBLE are allowed.


## Syntax

```ngql
Expand Down Expand Up @@ -41,6 +46,9 @@ nebula> ALTER TAG t1 ADD (p3 int, p4 string);
nebula> ALTER TAG t1 TTL_DURATION = 2, TTL_COL = "p2";
nebula> ALTER TAG t1 COMMENT = 'test1';
nebula> ALTER TAG t1 ADD (p5 double NOT NULL DEFAULT 0.4 COMMENT 'p5') COMMENT='test2';
// Change the `p3` property to INT8
nebula> ALTER TAG t1 CHANGE (p3 int8, p4 string);
[ERROR(-1005)]: Unsupported!
```

## Implementation of the operation
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4 changes: 4 additions & 0 deletions docs-2.0/3.ngql-guide/11.edge-type-statements/3.alter-edge.md
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- The property name must be unique in an edge type. If you add a property with the same name as an existing property or a dropped property, the operation fails.

- Only the length of a `FIXED_STRING` or an `INT` can be increased.

- Only the data type conversions from FIXED_STRING to STRING and from FLOAT to DOUBLE are allowed.

## Syntax

```ngql
Expand Down