WebMariaDB starting with 10.2.2. In MariaDB 10.2.2 and later, the easiest way to create an InnoDB table that uses the COMPACT row format is by setting the ROW_FORMAT table option to to COMPACT in a CREATE TABLE or ALTER TABLE statement. It is recommended to set the innodb_strict_mode system variable to ON when using this … WebJul 4, 2024 · CREATE TABLE ` owner ` ( ` o_id ` bigint NOT NULL AUTO_INCREMENT COMMENT ' 货主id ', ` o_name ` varchar (255) CHARACTER SET utf8mb4 COLLATE utf8mb4_0900_ai_ci NOT NULL COMMENT ' 货主名称 ', ` o_balance ` int NOT NULL COMMENT ' 余额 ', PRIMARY KEY (` o_id `) USING BTREE, UNIQUE KEY ` o_name ` …
MySQL Bugs: #67727: How do I remove table options
WebJun 7, 2024 · 2) The key lines in these sections are at the ends of the table definitions:) ENGINE=InnoDB AUTO_INCREMENT=201 DEFAULT CHARSET=utf8; and) ENGINE=InnoDB AUTO_INCREMENT=17 DEFAULT CHARSET=utf8; 3) use your editor of choice to change utf8 to utf8mb4. Or, if you're on Linux, you can use the sed utility: WebDescription: InnoDB tables that I create always have an Update_time of NULL when I do SHOW TABLE STATUS MyISAM tables have the correct Update_time value The output of the show table status is below. The SQL commands leading up to it are in the "How to repeat" section. Note that the Windows filesystem does show the correct update time for … fat pad in abdomen
Changing InnoDB table format to dynamic
WebMar 24, 2015 · alter table `t1` engine=innodb row_format=compressed key_block_size=16; Вот результаты тестирования скорости и размера данных при сжатии. Но есть минусы сжатия. На сжатых таблицах alter-ы будут происходить значительно ... Web15.10 InnoDB Row Formats. The row format of a table determines how its rows are physically stored, which in turn can affect the performance of queries and DML operations. As more rows fit into a single disk page, queries and index lookups can work faster, less cache memory is required in the buffer pool, and less I/O is required to write out ... WebNov 27, 2012 · Below is one example where I convert a compressed InnoDB table to MyISAM and row_format=compressed is bogus for MyISAM but remains. Other examples occur without going from InnoDB to MyISAM. Just change from compressed to uncompressed InnoDB or even compress -> compressed InnoDB. fat pad impingement ultrasound