mysql innodb 的 row size上限 背景 在项目使用中,出现了以下报错: Error Code: 1118 - Row size too large (> 8126). Changing some columns to TEXT or BLOB or using ROW_FORMAT=DYNAMIC or ROW_FORMAT=COMPRESSED may help. In current row format, BLOB prefix of 768 bytes is store…
报错信息:Row size too large. The maximum row size for the used table type, not counting BLOBs, is 65535 向mysql的表插件一个字段 类型为text时,或修改一个字段类型为text时,报出上面的错误.其实我对这个错误的原因理解也不是很深,给出一些我查到的解释吧 大意是数据表中有一个设定长度为64K的字段索引,当表中字段(不知道是字段名字还是什么)不能超过这个长度,65,535所说明的是针对的是整个表的…
首先声明,对MySQL不懂,很多都不知道原因 设计了一个表,里面很多text字段,然后填进去的东西太多(用的是Python的MySQLdb),报错: _mysql_exceptions.OperationalError: (1118, 'Row size too large. The maximum row size for the used table type, not counting BLOBs, is 8126. You have to change some columns to T…
1.针对数据库查询问题的方便,可以建立重要表的log备份记录表,在主表的添加,修改,删除添加触发器,修改触发器增加触发字段的点,限制条件. 数据库log表查问题比从线上多台服务器上下载日志文件相对方便,但是两者的侧重点不同. 2.错误代码: 1118 Row size too large. The maximum row size for the used table type, not counting BLOBs, is 65535. This includes storage overhe…
[问题描述] 1.从myslq(5.7.19-0ubuntu0.16.04.1)中导出sql脚本,导入到mysql(5.5.27)中,报如下错误:Row size too large. The maximum row size for the used table type, not counting BLOBs, is 8126. You have to change some columns to TEXT or BLOBs2.程序向mysql(5.5.27)中存入数据报错如下:Caused…
Symptoms The following appears in the atlassian-confluence.log: Caused by: com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Row size too large (> 8126). Changing some columns to TEXT or BLOB or using ROW_FORMAT=DYNAMIC or ROW_FORMAT=COMPRES…
1118 Row size too large Every table (regardless of storage engine) has a maximum row size of 65,535 bytes. Storage engines may place additional constraints on this limit, reducing the effective maximum row size. innodb_version : 5.5.56 Like other Inn…
I was always wondering what the size of numeric columns in MySQL was. Forgive me if this is obvious to someone else. But for me the MySQL manual lacks a great deal in this field. TL;DR: It's about the display width. You only see it when you use ZEROF…
昨天,在测试新的数据库时,迁移表遇到了这个问题.现在记录一下解决方案. 1.在配置文件中添加关闭严格模式的配置:sql_mode=NO_ENGINE_SUBSTITUTION,STRICT_TRANS_TABLES 2.在配置文件中添加使用独立表空间的配置:innodb_file_per_table=1 3.在数据库中执行:SHOW GLOBAL VARIABLES LIKE '%innodb_file%'; +--------------------------+-----------+ |…
sql语句(update/delete都会出现此问题) update x set available_material_id = null where id not in (select id from x where additional_info = 1); mistake 大致意思是,在同一语句中,不能先select出同一表中的某些值,再update这个表. You can't specify target table 'x' for update in FROM clause mysql…
1.优化方式 硬件优化=>系统优化=>mysql配置优化=>SCHEMA优化=>sql优化=>其他解决方案(redis or MongoDB or Cassandra or HBase) 2.mysql配置分析 1)常见瓶颈 90%系统瓶颈都在IO上,所以提高IOPS尤为总要,iowait过高,加内存,减小数据读取量 如果CPU很高,或者查询时间很长,90%索引不当 如果系统发生swap,必定是内存分配不当 所以优化,总是会围绕着提高对内存的使用率+减少IO,比如内存缓存+索…