步骤二:创建触发器 接下来,我们创建一个触发器,在table1表新增数据时将数据自动填充到table2表。 DELIMITER//CREATETRIGGERfill_data_triggerAFTERINSERTONtable1FOR EACH ROWBEGININSERTINTOtable2(id,name)VALUES(NEW.id,NEW.name);END;//DELIMITER
$insert_query = "INSERT INTO new_table (name, email) VALUES ('John Doe', 'john.doe@example.com')"; if ($mysqli->query($insert_query) === TRUE) { echo "Data inserted successfully"; } else { echo "Error inserting data: " . $mysqli->error; } 1. 2. 3. 4. 5. 6. 7. 8...
INSERT INTO mytable (id, name, age) VALUES (1, 'John Doe', 30);这条命令将在“mytable”表格中添加一行数据，包含id为1、name为“John Doe”和age为30的数据。执行INSERT语句，向表格中添加数据。如果添加成功，MySQL会返回一个“Query OK”或类似的提示信息。Query OK, 1 row affected 如果添加失败，...
localhost Db: db1 User: egon4 Table_name: t3 Grantor: root@localhost Timestamp: 0000-00-00 00:00:00 Table_priv: Column_priv: Select,Update row in set (0.00 sec) mysql> select * from columns_priv where user='egon4'\G *** 1. row *** Host: localhost Db: db1 User: egon4Table...
rowinset (0.00sec) mysql> select *fromcolumns_priv where user='egon4'\G*** 1. row ***Host: localhost Db: db1 User: egon4 Table_name: t3 Column_name: id Timestamp:0000-00-00 00:00:00Column_priv: Select*** 2. row ***Host...
一、Insert的几种语法 1-1.普通插入语句 代码语言:javascript 代码运行次数:0 运行 AI代码解释 INSERTINTOtable(`a`,`b`,`c`,……)VALUES('a','b','c',……); 这里不再赘述,注意顺序即可,不建议小伙伴们去掉前面括号的内容,别问为什么,容易被同事骂。
STARTTRANSACTION;INSERTINTO`insert_table`(`datetime`,`uid`,`content`,`type`)VALUES('0','userid_0','content_0',0);INSERTINTO`insert_table`(`datetime`,`uid`,`content`,`type`)VALUES('1','userid_1','content_1',1);...COMMIT; ...
一、Insert的几种语法 1-1.普通插入语句 INSERTINTOtable(`a`,`b`,`c`,……)VALUES('a','b','c',……); 这里不再赘述,注意顺序即可,不建议小伙伴们去掉前面括号的内容,别问为什么,容易被同事骂。 1-2.插入或更新 如果我们希望插入一条新记录(INSERT),但如果记录已经存在,就更新该记录,此时,可以使用...
insert into dl(num,val) values(101,'sess1') *** (2) HOLDS THE LOCK(S): RECORD LOCKS space id 28 page no 4 n bits 80 index num_index of table `test`.`dl` trx id 47631326 lock_mode X locks rec but not gap *** (2) WAITING FOR THIS LOCK TO BE GRANTED: ...
mysql> create table student(id int primary key auto_increment,name varchar(8),age int not null); Query OK, 0 rows affected (0.16 sec) mysql> insert into student (id,name,age)value(null,"张三",18); Query OK, 1 row affected (0.12 sec) mysql> insert into student (id,name,age)value...