1、MySQL
CREATE TABLE newtable LIKE oldtable;-- 创建表结构
INSERT INTO newtable SELECT * FROM oldtable where create_time>=‘2020-01-01 00:00:00‘ and create_time<=‘2020-12-31 23:59:59‘;-- 将旧表中2020年的数据插入到新表中
DELETE FROM oldtable where create_time>=‘2020-01-01 00:00:00‘ and create_time<=‘2020-12-31 23:59:59‘;-- 删除旧表2020年的数据
2、SQL-SERVER
select * into newtable from oldtable where 1=0;-- 创建表结构
select * into newtable from oldtable where create_time>=‘2020-01-01 00:00:00‘ and create_time<=‘2020-12-31 23:59:59‘;-- 创建新表，并将旧表中2020年的数据插入到新表中
DELETE FROM oldtable where create_time>=‘2020-01-01 00:00:00‘ and create_time<=‘2020-12-31 23:59:59‘;-- 删除旧表2020年的数据
3、ORACLE
create table newtable as select * from oldtable where 1=0;-- 创建表结构
create table newtable as select * from oldtable where create_time>=‘2020-01-01 00:00:00‘ and create_time<=‘2020-12-31 23:59:59‘;-- 创建新表，并将旧表中2020年的数据插入到新表中
DELETE FROM oldtable where create_time>=‘2020-01-01 00:00:00‘ and create_time<=‘2020-12-31 23:59:59‘;-- 删除旧表2020年的数据
create table newtable as select * from oldtable where 1=0;