一些重要操作记录。 避免重复插入INSERT INTO lhlh_emotion (word, freq, tag) SELECT ‘{emotion}‘, 100, ‘a‘ from DUAL where not exists(select word from lhlh_emotion where word=‘{emotion}‘);
原文地址:https://www.cnblogs.com/bingwork/p/9183268.html
时间: 2024-10-05 05:05:00
一些重要操作记录。 避免重复插入INSERT INTO lhlh_emotion (word, freq, tag) SELECT ‘{emotion}‘, 100, ‘a‘ from DUAL where not exists(select word from lhlh_emotion where word=‘{emotion}‘);
原文地址:https://www.cnblogs.com/bingwork/p/9183268.html