name) ); insert into t_vip(id,name,email) values(1,'zhangsan','zhangsan@123.com'); insert into t_vip(id,name,email) values(1,'lisi','lisi@123.com'); //错误:不能重复 insert into t_vip(id,name,email) values(1,'lisi','lisi@123.com'); ERROR 1062 (23000): Duplicate entry ...
I'm looking for a way of inserting a range of values into multiple rows. I have two columns that I am inserting into - project (stays the same) and sceneno, which is where the values will increment from x-y. Basically I am trying to convert the very inefficient PHP code below into...
INSERT INTO orders (customer_id, order_date, status) VALUES (1, '2019-01-01', 1); -- 可以先试一下用 SELECT last_insert_id() 看能否成功获取到的最新的 order_id INSERT INTO order_items -- 全是必须字段,就不用指定了 VALUES (last_insert_id(), 1, 2, 2.5), (last_insert_id(), 2...
MySQL INSERT – insert multiple rows# In order to insert multiple rows into a table, you use the INSERT statement with the following syntax: 1 2 3 4 INSERT INTO table(column1,column2...) VALUES (value1,value2,...), (value1,value2,...), ...; In this form, the value list of...
with values of 4 and 7. Separate transactions that attempt to insert values of 5 and 6, respectively, each lock the gap between 4 and 7 with insert intention locks prior to obtaining the exclusive lock on the inserted row, but do not block each other because the rows are nonconflicting....
3 rows in set (0.00 sec) mysql> insert into t1 values(1.1111111111111111111111111111111); #小数点后31个1 Query OK, 1 row affected (0.01 sec) mysql> insert into t2 values(1.1111111111111111111111111111111); Query OK, 1 row affected (0.00 sec) mysql> insert into t3 values(1.1111111111111111111111111...
# 操作前 +---+---+ | id | name | +---+---+ | 4 | E | +---+---+ -- 插入insert into for_delete(name) values('A'), ('B'), ('C'); -- truncate 操作 mysql> truncate for_delete; Query OK, 0 rows affected (0.04 sec) mysql> insert into for_delete(name) values...
Consider following example: mysql> CREATE TABLE u (id INT NULL, UNIQUE KEY(id)); Query OK, 0 rows affected (0.03 sec) mysql> INSERT INTO u VALUES (NULL), (NULL), (NULL); Query OK, 3 rows affected (0.00 sec) Records: 3 Duplicates: 0 Warnings: 0 # Note there is no error nor ...
EXPLAIN执行计划要看哪些指标?(type、key、rows、Extra) 大表分页怎么优化?(不用OFFSET,用WHERE id>xxx LIMIT) 批量插入怎么做?(values多组值/load data infile) 锁机制深水区 共享锁 vs 排他锁 间隙锁解决幻读 死锁检测与解决(show engine innodb status) ...
This will give me a single text string containing the value content of the INSERT query (which will need to be manipuated outside of the SQL query to pad it with NULL values for the unused items' columns etc). Thanks.Navigate: Previous Message• Next Message Options: Reply• Quote ...