I get the error "1005 - Can't create table 'webmessages'". If I remove either of the timestamps fields, the creation succeeds. If I remove the mediumtext field and keep the two timestamps, the creation succeeds. The statement succeeds as long as I leave two of the three fields (Cre...
mysql> SELECT * FROM temp_table, temp_table AS t2; ERROR 1137: Can't reopen table: 'temp_table' mysql bug地址:http://bugs.mysql.com/bug.php?id=10327 如果在一个存储函数里,你用不同的别名查找一个临时表多次,或者在这个存储函数里用不同的语句查找,这个错误都会发生。 4、show tables 语句不...
Can't open shared library 'udf.dll' (errno: 193 ) 如果在create function sys_eval returns string soname 'udf.dll'; 遇到这个说明你dll不对或者过于老旧,从kali中找一个全新的dll kali中udf提权dll的位置 /usr/share/metasploit-framework/data/exploits/mysql/ 复制出来即可,选择的dll的版本和mysql版本要...
DROP TABLE - 删除表 CREATE INDEX - 创建索引(搜索键) DROP INDEX - 删除索引DML 语言:SELECT - 从数据库表中获取数据 UPDATE - 更新数据库表中的数据 DELETE - 从数据库表中删除数据 INSERT INTO - 向数据库表中插入数据 数据库表一个数据库通常包含一个或多个表。每个表由一个名字标识(例如“客户”...
mysql> create table t1 -> ( -> id int primary key, # 创建主键 -> uid int unique, # 创建唯一键 -> name varchar(20), -> index(name) # 创建普通索引 -> ); 创建完毕后,通过 ‘ show create table 表名 ’ 查看表的创建详情 : ...
1mysql>create database school; 如果有了在创建就会报错2ERROR1007(HY000): Can't create database'school'; database exists3mysql>CREATE DATABASE IF NOT EXISTS school;4Query OK,1row affected,1warning (0.00sec)56mysql>CREATE DATABASE IF NOT EXISTS school;7Query OK,1row affected,1warning (0.00...
CREATE TABLE customer ( id INT UNSIGNED AUTO_INCREMENT, customer_no VARCHAR(200), customer_name VARCHAR(200), PRIMARY KEY(id), -- 主键索引:列设定为主键后会自动建立索引,唯一且不能为空。 UNIQUE INDEX uk_no (customer_no), -- 唯一索引:索引列值必须唯一,允许有NULL值,且NULL可能会出现多次。
insert into t9 values(-128),(127); select * from t9; +---+ | id | +---+ | -128 | | 127 | +---+ # 默认带符号 约束条件之unsigned 无符号 create table t10(id tinyint unsigned); create table t11(id int); # int默认也是带符号的 # 整型默认情况下都是带有符号的 ## 针对整型...
掘金https://juejin.im/user/5e9d3ed251882538083fed1f/posts CSDNhttps://blog.csdn.net/dbkernel 博客园(cnblogs)https://www.cnblogs.com/dbkernel 数据库mysql 赞收藏 分享 阅读383更新于3 月 18 日 dbkernel 33声望7粉丝 目前从事云数据库MySQL数据库内核研发工作,曾做过Postgres-XC、Greenplum等分布式数...
I create a database with workbench and when i import it in mysql there is this error. I read in a lot of messages that it is a fk problem but after looking for it in the sql code for hours i really don't see it. Can you help me please. ...