新建表 tb_student_course,插入数据并查询,SQL 语句和运行结果如下: mysql>CREATE TABLE `tb_student_course` (-> `id`int(4) NOT NULL AUTO_INCREMENT,-> `name` varchar(25) NOT NULL,->PRIMARY KEY (`id`)->); Query OK,0rows affected (0.0
DROPPROCEDUREtruncate_test;DELIMITER//CREATEPROCEDUREtruncate_test()BEGINinsert into t1 select*from t1_bak;truncate table t1;END//DELIMITER;calltruncate_test();mysql>calltruncate_test();QueryOK,0rowsaffected(1min59.58sec)# Time:2023-06-08T00:28:30.969993+08:00# User@Host:root[root]@ localhost...
123mysql>truncate TABLE dbname.ZONESERVICE;Query OK, 0 rows affectedmysql> 如此，便成功清空了数据库中名为ZONESERVICE的表。简单易懂，对吧？3.数据库操作比较 3.1.truncate与drop和delete的差异 truncate与drop和delete在数据库操作中具有显著的差异。truncate和drop属于DDL（数据定义语言）范畴，执行后无法撤销...
Replication of the mysql System Schema Replication and the Query Optimizer Replication and Partitioning Replication and REPAIR TABLE Replication and Reserved Words Replication and Row Searches Replication and Source or Replica Shutdowns Replica Errors During Replication Replication and Server SQL...
Query OK, 0rowsaffected (0.02 sec) root@localhost abce>insertintotest(age)values(3),(4),(5); Query OK, 3rowsaffected (0.00 sec) Records: 3 Duplicates: 0 Warnings: 0 root@localhost abce>select*fromtest; +---+---+ | id | age | +---...
mysql> CREATE TABLE `tb_student_course` ( -> `id` int(4) NOT NULL AUTO_INCREMENT, -> `name` varchar(25) NOT NULL, -> PRIMARY KEY (`id`) -> ); Query OK, 0 rows affected (0.04 sec) mysql> INSERT INTO tb_student_course(name) VALUES ('Java'),('MySQL'),('Python'); ...
3 rows in set (0.00 sec)使⽤ TRUNCATE 语句清空 tb_student_course 表中的记录，SQL 语句和运⾏结果如下：mysql> TRUNCATE TABLE tb_student_course;Query OK, 0 rows affected (0.04 sec)mysql> SELECT * FROM tb_student_course;Empty set (0.00 sec)TRUNCATE 和 DELETE 的区别（再次强调）从...
\Drupal::database()->truncate('cache_config')->execute();mysql_query('TRUNCATE TABLE yqxq_cache_container'); mysql_query('TRUNCATE TABLE yqxq_cach 浏览0提问于2020-03-29得票数 0 回答已采纳 1回答 如何在不舍入MySQL的情况下得到2位小数点呢? 、 我试图使输出只显示两个小数点而不舍入,我已...
复制truncate语句到mysql命令行执行,可以一次复制多条执行。 mysql> truncate TABLE dbname.ZONESERVICE; Query OK, 0 rows affected mysql> 这样就清空数据库中所有表啦,简单吧~ ——— 版权声明:本文为CSDN博主「iw1210」的原创文章,遵循 CC 4.0 BY-SA 版权协议,转载请附上原文出处链接及本声明。 原文链接:http...
#!/usr/bin/env python3 import hashlibimport mysql.connectorcnx = mysql.connector.connect( host=config["MySQL 浏览23提问于2021-09-06得票数 0 3回答 如何用码点火器锁表? 、、 我必须在一个模型中运行这个sql例程:$this->db->query('TRUNCATE TABLE ordersSELECT * FROM orders_tmp');但我知道这个...