Hi!
I want to check if I pass the parameter "param1" to a sql script "delme.sql" like
```
\if ':param1'
\echo :param1;
\else
\prompt 'Param1? ' :param1
\endif
select :'param1';
```
if parameter `param1` is not passed, the .sql should ask for it.
If I run something like
`psql -f delme.sql -v param1=1`
it works, but if i pass
`psql -f delme.sql -v param1=meh`
i receive
`psql:delme.sql:1: error: unrecognized value ":param1" for "\if expression": Boolean expected`
How can I implement that?
TIA, Wiwwo
