Yi Tang June 08, 2006 06:58PM Re: ERROR 1116 (HY000): Too many tables; MySQL can only use 61 tables in a join Bill Karwin June 08, 2006 10:12PM Sorry, you can't reply to this topic. It has been closed.
例如:500个连接将会消耗500*sort_buffer_size(4M)=2G。 join_buffer_size=4M 用于表关联缓存的大小,和sort_buffer_size一样,该参数对应的分配内存也是每个连接独享。 innodb参数 innodb相关参数 https://dev.mysql.com/doc/refman/8.0/en/innodb-parameters.html#sysvar_innodb_buffer_pool_size 添加链接描述 innod...
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采用keepalived作为高可用方案时,两个节点最好都设置成BACKUP模式,避免因为意外情况下(比如脑裂)相互抢占导致往两个节点写入相同数据而引发冲突;1)把两个节点的auto_increment_increment(自增步长)和auto_increment_offset(自增起始值)设成不同值。其目的是为了避免master节点意外宕机时, ...
The maximum number of tables that can be referenced in a single join is 61. This includes a join handled by merging derived tables and views in theFROMclause into the outer query block (seeSection 8.2.2.4, “Optimizing Derived Tables and View References with Merging or Materialization”). ...
(3)INSERT INTO R_USER(ID_USER, LOGIN, PASSWORD, NAME, DESCRIPTION, ENABLED) VALUES (2,'guest','2be98afc86aa7f2e4cb79ce77cb97bcce','Guest account','Read-only guest account',TRUE); 三.执行的建表语句:(可直接在mysql客户端执行,或者把kettle中执行的sql语句copy出来修改正确再复制回去执行)...
If merging would result in an outer query block that references more than 61 base tables, the optimizer chooses materialization instead. The optimizer propagates【ˈprɑːpəɡeɪts传播;繁殖;宣传;增殖;】 an ORDER BY clause in a derived table or view reference to the outer query block...
use mysql; 打开mysql这个数据库 show tables; 显示当前数据库中的所有表的名称 select user,host,password from mysql.user; 在mysql数据库文件中user表中查看user、hosts、 password字段的内容。 grant all on.to jin@‘%’ identified by ‘jin’ with grant option; 创建一个拥有全部权限的jin ...
tab.table_name from information_schema.tables tab left join information_schema.table_constraints tco on tab.table_schema = tco.table_schema and tab.table_name = tco.table_name and tco.constraint_type = 'PRIMARY KEY' where tco.constraint_type is null and tab.table_schema not in('mysql', ...
Yi Tang June 08, 2006 06:58PM Re: ERROR 1116 (HY000): Too many tables; MySQL can only use 61 tables in a join Bill Karwin June 08, 2006 10:12PM Sorry, you can't reply to this topic. It has been closed.