如何通过设置另一个表中的值来创建要插入到表中的MySQL语句

Question

I need to insert rows into a table using values from another table.

The following statement is approx what I want, I just can't figure out how to do the SELECT.

INSERT INTO forumlink
SET 
    forumlink.personid = fp.posterid, 
    forumlink.link = '/app-views/forum/post-view?postID=' + fp.postid,
    forumlink.type = 'MYPOSTS'
(SELECT posterid, postid FROM forumpost fp);

Thanks for helping.

BobC

Answer 1

You will need to add the fixed values to the ones you are selecting from the other table and use an INSERT ... SELECT query:

INSERT INTO forumlink (personid, link, type)
SELECT posterid, CONCAT('/app-views/forum/post-view?postID=', postid), 'MYPOSTS'
FROM forumpost

Answer 2

It's simpler than you're making it:

INSERT INTO forumlink (personid, link, type)
SELECT fp.posterid, CONCAT('/app-views/forum/post-view?postID=', fp.postid), 'MYPOSTS'
FROM forumpost fp;

You can read more about the syntax in the relevant documentation .