Convert a MySQL Query to PostgreSQL-CodePudding

I have a MySQL query that needs to be converted over to PostgreSQL. As I understand, PostgreSQL has no UTC_TIMESTAMP() or DATE_ADD() functions available. After reading the docs, I'm not entirely certain which date functions solve my needs in this context. I'm a bit new to PostgreSQL so apologies if my question is noobish!

Here's the query:

INSERT INTO snippets (title, content, created, expires)
VALUES(?, ?, UTC_TIMESTAMP(), DATE_ADD(UTC_TIMESTAMP(), INTERVAL ? DAY))

For reference, here is my snippets model:

CREATE TABLE snippets (
    id BIGSERIAL NOT NULL PRIMARY KEY,
    title VARCHAR(100) NOT NULL,
    content TEXT NOT NULL,
    created TIMESTAMP(0) NOT NULL,
    expires TIMESTAMP(0) NOT NULL
);

CodePudding user response：

I've not done much with postgresql either, but maybe something like:

INSERT INTO snippets (title, content, created, expires)
VALUES('test', 'stuff', (now() at time zone 'utc'), (now() at time zone 'utc'   interval '1 day' * 3))

Which gives:

id  title   content created             expires
1   test    stuff   2022-11-23 13:02:13 2022-11-26 13:02:13

Then to restore the parameterized version of the query:

INSERT INTO snippets (title, content, created, expires)
VALUES(?, ?, (now() at time zone 'utc'), (now() at time zone 'utc'   interval '1 day' * ?))

I was not sure how to test the parameterized equivalent, but here's a dbfiddle example with the output from the first query.