GROUP BY子句
如何有效地从MySQL表中过滤掉重复的行？
要从MySQL表中过滤重复的行，可以使用 DISTINCT 关键字或者 GROUP BY 子句。，，“sql，SELECT DISTINCT column1, column2 FROM table_name;，`，，或者：，，`sql，SELECT column1, column2 FROM table_name GROUP BY column1, column2;，“
要从MySQL表中过滤重复的行，可以使用 DISTINCT 关键字或者 GROUP BY 子句。，，“sql，SELECT DISTINCT column1, column2 FROM table_name;，`，，或者：，，`sql，SELECT column1, column2 FROM table_name GROUP BY column1, column2;，“
