[
https://issues.apache.org/jira/browse/FLINK-33490?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Shengkai Fang updated FLINK-33490:
----------------------------------
Description:
We should forbid
```
CREATE VIEW id_view AS
SELECT id, uid AS id FROM id_table
```
As the SQL standards states,
If <regular view specification> is specified, then:
i) If any two columns in the table specified by the <query expression> have
equivalent <column name>s, or if any column of that table has an
implementation-dependent name, then a <view column list> shall be specified.
ii) Equivalent <column name>s shall not be specified more than once in the
<view column list>.
Many databases also throw exception when view name conflicts, e.g. mysql,
postgres.
was:
When should forbid
```
CREATE VIEW id_view AS
SELECT id, uid AS id FROM id_table
```
As the SQL standards states,
If <regular view specification> is specified, then:
i) If any two columns in the table specified by the <query expression> have
equivalent <column name>s, or if any column of that table has an
implementation-dependent name, then a <view column list> shall be specified.
ii) Equivalent <column name>s shall not be specified more than once in the
<view column list>.
Many databases also throw exception when view name conflicts, e.g. mysql,
postgres.
> Validate the name conflicts when creating view
> ----------------------------------------------
>
> Key: FLINK-33490
> URL: https://issues.apache.org/jira/browse/FLINK-33490
> Project: Flink
> Issue Type: Bug
> Components: Table SQL / Planner
> Affects Versions: 1.19.0
> Reporter: Shengkai Fang
> Priority: Major
>
> We should forbid
> ```
> CREATE VIEW id_view AS
> SELECT id, uid AS id FROM id_table
> ```
> As the SQL standards states,
> If <regular view specification> is specified, then:
> i) If any two columns in the table specified by the <query expression> have
> equivalent <column name>s, or if any column of that table has an
> implementation-dependent name, then a <view column list> shall be specified.
> ii) Equivalent <column name>s shall not be specified more than once in the
> <view column list>.
> Many databases also throw exception when view name conflicts, e.g. mysql,
> postgres.
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