column_pulic表示公共字段,tbl_2.column_any表示任意一个字段
SELECT tbl_1.column_1, tbl_1.column_2, ..., tbl_1.column_k, ..., tbl_1.column_n FROM tbl_1 LEFT JOIN tbl_2 ON tbl_1.column_public = tbl_2.column_public WHERE tbl_2.column_any IS NULL;
三个资料Q群下载不了也转发不了,先放这里Fine_tuning.zipLangChain.zipdata_clear.rar