CommandText should be an empty string by default

[roji]

As per the docs.

I'd also consider throwing if null is set, although that would be a slightly bigger breaking change.

[bgrainger]

I'd also consider throwing if null is set

It appears that only npgsql does this: https://mysql-net.github.io/AdoNetResults/#CommandText_is_coerced_to_empty_string

Most other drivers silently coerce null to "". (Sqlite leaves it as null.) This is also the general behaviour for DbConnection.ConnectionString, even for npgsql.

I plan to default to "" and coerce .CommandText = null to "".

[roji]

Makes sense.

[bgrainger]

Changed in 0.62.0.