摘要: You are given an undirected weighted graph of n nodes (0-indexed), represented by an edge list where edges[i] = [a, b] is an undirected edge connectin 阅读全文
posted @ 2020-07-14 13:19 Schwifty 阅读(271) 评论(0) 推荐(0)
摘要: 每一个query写完后要在后面加分号 USE DATABASE(使用这个db) SHOW TABLES(把这个db中所有的表展示出来) SHOW COLUMNS FROM TABLE1(把这个table1中的所有列展示出来) select distinct column1 from table1 只 阅读全文
posted @ 2020-07-14 10:48 Schwifty 阅读(126) 评论(0) 推荐(0)