在MySQL中,可以使用以下方法来去除大表数据中的重复记录:
SELECT DISTINCT column1, column2 FROM table_name;
SELECT column1, column2 FROM table_name GROUP BY column1, column2;
SELECT column1, column2 FROM table_name WHERE (column1, column2) IN (SELECT column1, column2 FROM table_name GROUP BY column1, column2);
CREATE TEMPORARY TABLE temp_table AS SELECT DISTINCT column1, column2 FROM table_name;
SELECT * FROM temp_table;
以上是一些常见的去重方法,可以根据具体情况选择合适的方法来去除大表数据中的重复记录。