The note mentions a limitation that "The size of the insert cannot exceed the maximum packet size between servers. If the insert exceeds this size, it is broken into multiple packets and the rollback problem can occur." For what we are doing, it should be theoretically to carve our batch...
mysql_row_templ_t 插入数据流程 1.创建模板加速数据格式转换 2.数据格式转换 row_insert_for_mysql_using_ins_graph row_get_prebuilt_insert_row row_mysql_convert_row_to_innobase 3. 插入数据 btr_cur_optimistic_insert btr_cur_pessimistic_insert btr_root_raise_and_insert btr_page_split_and_inser...
connecter.commit() ---classBaseCursor:defexecutemany(self, query, args):# type: (str, list) -> int"""Execute a multi-row query. if not args: return m = RE_INSERT_VALUES.match(query) if m: q_prefix = m.group(1) % () q_values = m.group(2).rstrip() q_postfix = m.group(...
Description:LAST_INSERT_ID() returns the first new ID of the last insert rather than the last new ID of the last insert. This bug shows up when doing multi-row inserts.How to repeat:mysql> use test; Database changed mysql> create temporary table t1 (id mediumint auto_increment not null...
-- 创建一个包含多行数据的虚拟表CREATETABLEmulti_row_data(idINTPRIMARYKEYAUTO_INCREMENT,nameVARCHAR(255));-- 使用DUAL表生成多行数据INSERTINTOmulti_row_data(name)SELECT'John'ASnameFROMDUALUNIONALLSELECT'Jane'ASnameFROMDUAL;-- 查询生成的多行数据SELECT*FROMmulti_row_data; ...
(缺点)并不是所有语句都能复制的比如:insert into table1(create_time) values(now()),取的是数据当前时间,不同的数据可能时间不一致,另外像存储过程和触发器也可能存在问题。 基于行复制(ROW) (优点)从MySQL5.1开始支持基于行的复制,最大的好处是可以正确地复制每一行数据。一些语句可以被更加有效地复制,另外就...
The value of LAST_INSERT_ID() is not changed if you set the AUTO_INCREMENT column of a row to a non-“magic” value (that is, a value that is not NULL and not 0). Important If you insert multiple rows using a single INSERT statement, LAST_INSERT_ID() returns the value generat...
CREATETABLE`t`(`id`int(11)NOTNULL,`k`int(11)DEFAULTNULL,PRIMARYKEY(`id`))ENGINE=InnoDB;insert intot(id,k)values(1,1); 在可重复读隔离级别下,事务A查询到的k值为1,因为事务A首先启动,创建事务id,接着是事务B,事务B的row trx_id会大于事务A,落在高水位未开始事务中,数据修改对A不可见,事务C...
问mysqli->multi_query INSERT INTO no resultEN我们继续 MySQLi 扩展的学习，上篇文章中提到过，MySQL...
INSERT INTO tbl2_name (col1,col2) VALUES(col2*2,15); INSERT INTO tbl2_name (col1,col2) VALUES(15,col1*2);' for result in cursor.execute(operation, multi=True): print reslut.row_count Navigate:Previous Message•Next Message ...