> When performing one INSERT SQL command in non-interactive mode I get a > feedback about the number of line inserted. OK > When performing the INSERT command SQL request following by for example a > select ; I don't get any feedback of the insert command !!??
This is because -c passes the string as ONE sql command, and for multi-statement commands psql only reports about the last one.
The equivalent in interactive mode is to use \; between SQL commands.
ISTM that this is the documented behavior, so it is not a bug.
There is a submitted patch to change it to show all results: