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SELECT post.*, comments.* from posts left join comments using post_id
| post_id | post_title | comment_id | post_id | comment
| 1 | test | 1 | 1 | test comment 1
| 1 | test | 2 | 1 | test comment 2
| 1 | test | 3 | 1 | test comment 3
| 2 | test | 4 | 1 | test comment 4
| 2 | test | 5 | 1 | test comment 5
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SELECT post.*, comments.* from posts left join comments using post_id
| post_id | post_title | comment_id | post_id | comment
| 1 | test | 1 | 1 | test comment 1
| 1 | test | 2 | 1 | test comment 2
| 1 | test | 3 | 1 | test comment 3
| 2 | test | 4 | 1 | test comment 4
| 2 | test | 5 | 1 | test comment 5
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