| From: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
|---|---|
| To: | Adrian Klaver <adrian(dot)klaver(at)aklaver(dot)com> |
| Cc: | 黄宁 <huangning0722(at)gmail(dot)com>, pgsql-general(at)postgresql(dot)org |
| Subject: | Re: Delete a table automatic? |
| Date: | 2022-11-01 15:23:18 |
| Message-ID: | 1181453.1667316198@sss.pgh.pa.us |
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| Lists: | pgsql-general |
Adrian Klaver <adrian(dot)klaver(at)aklaver(dot)com> writes:
> On 10/31/22 18:44, 黄宁 wrote:
>> I now have two tables named A and B. Table B is calculated based on the
>> data of table A. I wonder if table B can be automatically deleted when
>> table A is deleted？
> The only thing I can think of is a sql_drop event trigger:
I wonder whether the OP's purposes wouldn't be better served by
making B a view or materialized view, instead of a separate table.
Then the cascaded-drop behavior would be automatic.
regards, tom lane
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