Version:10Row_format: Dynamic Rows:0Avg_row_length:0Data_length:0Max_data_length:281474976710655Index_length:1024Data_free:0Auto_increment:1Create_time:2020-05-2400:15:16Update_time:2020-05-2400:15:16Check_time:NULLCollation: utf8_general_ci Checksum:NULLCreate_options: Comment:1rowinset(0.00...
3.Order by 时select * 是一个大忌。最好只Query需要的字段。 当Query的字段大小总和小于max_length_for_sort_data,而且排序字段不是TEXT|BLOB类型时,会用改进后的算法–单路排序,否则用多路排序。 两种算法的数据都有可能超出sort_buffer_size的容量,超出之后,会创建tmp文件进行合并排序,导致多次I/O,但是用单...
MAX_SIZE, MAX_UPDATES_PER_HOUR, MAX_USER_CONNECTIONS, MAXVALUE, MEDIUM, MEDIUMBLOB, MEDIUMINT, MEDIUMTEXT, MEMORY, MERGE, MESSAGE_TEXT, MICROSECOND, MIDDLEINT, MIGRATE, MINUTE, MINUTE_MICROSECOND, MINUTE_SECOND, MINVALUE, MIN_ROWS, MOD, MODE, MODIFIES, MODIFY, MONTH, MULTILINESTRING, MULTI...
Description: Maximum length of words stored in an InnoDB FULLTEXT index. A larger limit will increase the size of the index, slowing down queries, but permit longer words to be searched for. In most normal situations, longer words are unlikely search terms. Commandline: --innodb-ft-max-...
Re: Full-Text Index Overview would be nice if min_word_length / max_word_length were settable per index rather then globally. For example, a table like CREATE TABLE user_agreement (... full_name TEXT, agreement TEXT... ) . I think, for agreement field index with skipped words of ...
[UNIQUE|FULLTEXT|SPATIAL] [INDEX|KEY] [index_name](col_name [length]) [ASC|DESC] 唯一索引|全文索引|空间索引 索引名字 ALTER TABLE table_name ADD [UNIQUE|FULLTEXT|SPATIAL] [INDEX|KEY] [index_name](col_name [length]) [ASC|DESC] – alter table t6 add fulltext index infosuoyin(info) ...
字符串类型用来存储字符串数据,除了可以存储字符串数据之外,还可以存储其他数据,比如图片和声音的二进制数据.MySQL支持两类字符型数据:文本字符串和二进制字符串,本小节主要介绍文本字符串类型,文本字符串可以进行区分或者不区分大小写的串比较,另外还可以进行模式匹配查找.MysQL中文本字符串类型指CHAR,VARCHAR,TEXT,ENUM...
(\integration\test-pool.js:60:18)at …text: "You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'wrong query' at line 1",sql: 'wrong query - parameters:[]',fatal: false,errno: 1064,sqlState: '...
max_binlog_size = 256Mexpire_logs_days= 5 binlog_cache_size = 64M # server-id = 1001 innodb_data_home_dir = /data/mysql/data innodb_data_file_path = ibdata1:100M:autoextend innodb_log_group_home_dir = /data/mysql/data innodb_log_file_size = 128M ...
MaxScale typically uses regular expressions simply, only checking whether the pattern and subject match at some point. For example, using the QLAFilter and setting match=/SELECT/ causes the filter to accept any query with the text "SELECT" somewhere within. To force the pattern to only match ...