php - MySQL select specific entry from a table which is not in another table -
i have problem in mysql when trying select specific entry table not in table. know sentence sounds nuts here example trying do.
table users:
user_id,username,password (plus other columns not important this)
table articles:
article_is,user_id,content (plus others)
table views (used store data if user viewed specific article):
view_id,article_id,user_id,date
now, trying select users has not read specific article, example article id 10. have no entry in views table.
i hope makes more sense now. answers. v.
select user_id users u left join views v on v.user_id=u.user_id , v.article_id = 10 v.user_id null
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