Format position in sql

[LHolten]

This adds more detail to errors when preparing a statement fails due to a syntax error or unknown column.
Errors now look like this:

db error: ERROR: column "invalid_field" does not exist
SQL: SELECT /*ERROR =>*/invalid_field FROM test_user WHERE name = $1;

It includes a single line of the SQL code and inserts the /*ERROR =>*/ comment

[basbossink-ds]

👍

[LHolten]

this is not quite done yet

[LHolten]

Now it is done I believe

[basbossink-ds]

👍