select supplimental_id, url, path from c4_contest_enroll_supplemental ces left join c4_docscnv d on ces.supplimental_id=d.doc_id where path is null and url REGEXP '\.ppt$|\.pptx$|\.docx$|\.doc$';
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· MySQL
select supplimental_id, url, path from c4_contest_enroll_supplemental ces left join c4_docscnv d on ces.supplimental_id=d.doc_id where path is null and url REGEXP '\.ppt$|\.pptx$|\.docx$|\.doc$';
· MySQL