Also, the DB Manager in QGIS is very useful for composing SQL queries on the 
fly and then adding the results as a map layers.  And once happy with the query 
it can be “saved” to the database as a view.

https://docs.qgis.org/latest/en/docs/user_manual/plugins/core_plugins/plugins_db_manager.html

Alternatively, making views with pgAdmin and then loading the view in QGIS 
works.

> On Jan 7, 2022, at 11:21, Marco Boeringa <[email protected]> wrote:
> 
> pgAdmin is not supposed to a be a full fledged GIS, it is an administrative 
> tool to manage your (spatial) databases, that just happens to have some very 
> rudimentary spatial visualization capability. If you need GIS type 
> symbolization and labelling functionality, install QGIS, it has everything 
> you can desire in that respect.
> 
> Marco
> 
> Op 6-1-2022 om 22:37 schreef Shaozhong SHI:
>> The standard visualisation in PgAdmin is rather limited.  Is there anyway to 
>> enhance visualisation in PgAdmin. For instance, mark a start_node as 6A and 
>> its end_node as 6B so that we can visualise definitions of nodes, 
>> segments/links and direction of travel in a network.
>> 
>> Is this possible?
>> 
>> Regards,
>> 
>> David
>> 
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