I read the Q/A "How to insert a row in postgreSQL pgAdmin?" from enter link description here , but it's for pgAdmin 3.
I just installed postgreSQL 9.6.2 with pgAdmin 4, but could not find the option shown in pgAdmin 3, which you can click to have an excel-like window where you can add and update data in a table without using SQL language (as per @KarelG). Does anyone know whether it stills exist in postgreSQL 9.6.2 with pgAdmin 4? Thanks.
You can select the table, use the right mouse button to select “View Data” and any of the subselections you choose.
You can add new rows in the resulting grid.
To save them in the database, use the “Save” icon with the image of a floppy disk: