mysql delete on join? -


मैं 

  का उपयोग कर सकते हैं sent_txts से LEFT JOIN प्राप्त_टीएक्सटीएस आर s.msg_link_id पर = R.id WHERE r.action_id = 6;

शीर्ष मिलान करने वाली पंक्तियां,

मैं दोनों पक्षों की मेलिंग पंक्तियों को हटाने के लिए एक क्वेरी कैसे लिख सकता / सकती हूं?

कुछ ऐसा

> <पूर्व> send_txts को हटाएं LEFT JOINED_txts आर पर s.msg_link_id = r.id WHERE r.action_id = 6 हटाएं; अस्वीकरण: इस समय परीक्षण करने के लिए मेरे पास एक mysql डेटाबेस की पहुंच नहीं है, लेकिन मुझे लगता है कि आप इसका उपयोग कर सकते हैं: 
  हटाएं, send_txts से r भेजें s_msg_link_id = r.id पर आरक्षित_टीक्सट आर ​​से जुड़ें, जहां r.action_id = 6;

अधिक जानकारी के लिए mysql के दस्तावेज़ देखें। एक बेहतर तरीका हो सकता है कि प्राप्त_टीएक्सट्स से भेजी गई विदेशी कुंजी बाधा को भेज दिया जाए, और हटाए गए कैस्केड हो।


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