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* CREATE DOMAIN should also include an example of use with functions
@ 2017-02-02 20:49 postgresql@eric.brechemier.name
0 siblings, 1 reply; 3+ messages in thread
From: postgresql@eric.brechemier.name @ 2017-02-02 20:49 UTC (permalink / raw)
To: pgsql-docs
The following documentation comment has been logged on the website:
Page: https://www.postgresql.org/docs/9.6/static/sql-createdomain.html
Description:
The documentation of CREATE DOMAIN currently describes how optional
constraints can be useful for the fields of a table. There is no mention of
functions in this page.
I have recently found two use cases for domains with functions:
1. validation of the format of user inputs (mobile phone number, email
address, etc.) before any further processing in the function.
2. provide CURRENT_USER to a SECURITY DEFINER function (more details here:
http://stackoverflow.com/a/42011279/207968)
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* Re: CREATE DOMAIN should also include an example of use with functions
@ 2017-04-05 04:23 Peter Eisentraut <peter.eisentraut@2ndquadrant.com>
parent: postgresql@eric.brechemier.name
0 siblings, 1 reply; 3+ messages in thread
From: Peter Eisentraut @ 2017-04-05 04:23 UTC (permalink / raw)
To: postgresql@eric.brechemier.name; pgsql-docs
On 2/2/17 15:49, postgresql@eric.brechemier.name wrote:
> Page: https://www.postgresql.org/docs/9.6/static/sql-createdomain.html
> Description:
>
> The documentation of CREATE DOMAIN currently describes how optional
> constraints can be useful for the fields of a table. There is no mention of
> functions in this page.
There is an example using operators, which is pretty much the same thing.
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Peter Eisentraut http://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services
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* Re: CREATE DOMAIN should also include an example of use with functions
@ 2017-04-05 17:26 Peter Eisentraut <peter.eisentraut@2ndquadrant.com>
parent: Peter Eisentraut <peter.eisentraut@2ndquadrant.com>
0 siblings, 0 replies; 3+ messages in thread
From: Peter Eisentraut @ 2017-04-05 17:26 UTC (permalink / raw)
To: Eric Bréchemier <postgresql@eric.brechemier.name>; +Cc: pgsql-docs
On 4/5/17 06:09, Eric Bréchemier wrote:
> Hi Peter,
>
> I find no mention of operators on this page:
>
> "This example creates the us_postal_code data type and then uses the
> type in a table definition."
> https://www.postgresql.org/docs/9.6/static/sql-createdomain.html#AEN79068
It uses the ~ operator in the domain definition in the example.
Perhaps you should send in an example of your own to explain what you mean.
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Peter Eisentraut http://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services
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2017-02-02 20:49 CREATE DOMAIN should also include an example of use with functions postgresql@eric.brechemier.name
2017-04-05 04:23 ` Peter Eisentraut <peter.eisentraut@2ndquadrant.com>
2017-04-05 17:26 ` Peter Eisentraut <peter.eisentraut@2ndquadrant.com>
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