On 26/02/2018 12:46 AM, Denis F wrote:
On Sunday, 25 February 2018 at 09:23:18 UTC, rikki cattermole wrote:
It's the same concept as the SQL (and other) Standards.
Ok, I propose to be consistent and ask for compliance with the
Standard from the RDBMSes. For example, arguments substitution:
MySQL uses the '?'
PostgreSQL uses $1
SQLite accepts both
Oracle uses a :name
(Really, it is very important to come to an agreement here because,
for sure, the next obvious step is writing an ORM generator on top of
the idea what you are proposing.)
On IRC earlier today we discussed database libs a bit, we agreed that
both "?" and "@name" needed to be supported. No other suggestions came
up. We don't really need a third or fourth form I think.
...And you are planned to give up "$1" support in favor of '?' and ":name"?
But it is impossible to convert text :names or '?' into Postgres's "$1":
Postgres isn't knows fields names at start of a query processing and you
can't replace '?' to "$<num>" by simple 'replace' call - it will need
full syntax parsing of Posgres SQL query because queries can contain
EXECUTE statement (whose purpose is executing dynamic commands).
Let's not go inventing a solution here, what does JDBC and ADO.net do?
