mysql - INSERT WHERE NOT EXISTS clause using python variables -

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i attempting write sql query insert rows table when script run. have been able working whilst duplicating data, unable set insert can determine whether or not record unique.

i have tried following these threads:

most efficient way sql 'insert if not exists'

python mysqldb / mysql insert ignore & checking if ignored

currently, can system add records, due frequency script ran @ database being filled same records. current code:

for post in r.get_subreddit("listentothis").get_new(limit=5): if 'youtube.com' in post.url or 'youtu.be' in post.url:     print(str(post.title))     print(str(post.url)) sql = """insert listentothis2(title,url) values ('%s', '%s')  not exists (select 1 listentothis2 url = '%s') """ % (post.title, post.url, post.url)     try:         cursor.execute(sql)         db.commit()     except:         db.rollback()

i have tried:

sql = """insert ignore listentothis2(title,url) values ('%s', '%s') """ % (post.title, post.url)

however, adds 3 recent records whether or not commited database already. appreciated!


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