数据库版本:10.1.35-MariaDB
字符集:utf8
我得到了错误:Specified key was too long; max key length is 767 bytes,所以我将列长度改为255。但是我需要在列中允许varchar(1000),所以当我在db列中输入大数据时,它会说:Warning: #1265 Data truncated for column
如何允许大数据?
我正在尝试为CentOS 7上的MariaDB版本5.5.60更改max_connections和open_files_limit。因为可能有多个my.cnf文件,所以我使用mysql --help --verbose来获取可能的位置。下面是输出: Default options are read from the following files in the given order:
/etc/mysql/my.cnf /etc/my.cnf ~/.my.cnf Cnf.etc/ mysql /my.cnf不存在,根也不在我的用户目录、/ .my.cnf /或mysql用户目录(一开始就
MariaDB线程池
MySQL线程池
我已经阅读了MySQL/MariaDB线程池的正式文档,但我仍然对此感到困惑;据我所知,线程池有两个优点:
1. limit too many connections, too many connection could lead to too many context switches, but it seems option "--max-connections" also could limit connections~
2.reuse connected old thread:when a new connection
我有过
Welcome to the MariaDB monitor. Commands end with ; or \g.
Your MariaDB connection id is 5
Server version: 10.0.36-MariaDB-0ubuntu0.16.04.1 Ubuntu 16.04
我的表描述:
MariaDB [GTX_CC]> desc SubscribedUser;
+---------------------------------------------+--------------+------+-----+---------+-------+
我在Linux Debian9(Stretch)上有MariaDB + Nginx。在安装MariaDB it并尝试启动它后,我收到错误消息:[Warning] Could not increase number of max_open_files to more than 4096 (request: 4214)。所以我用谷歌搜索了一下,它告诉我应该在/etc/systemd/system/mysql.service中将LimiNOFILE更改为10000。我这样做了,做了守护重载,但它完全没有任何作用。我仍然收到相同的错误消息。我试着重装MariaDB,但也没有用。我还在文件的末尾添加了L
在运行以下语句时,我在MariaDB 10.3中发现了正常的3072字节键限制:
ALTER TABLE table1 ADD UNIQUE INDEX idx_my_composite_uniqueai_usr_email_uniq (table2_uuid ASC, table3_uuid ASC, text_column ASC)
这就产生了预期的错误:
ERROR 1071 (42000) at line 31: Specified key was too long; max key length is 3072 bytes
用于table1的DDL
CREATE TA
意图:我希望在MariaDB (10.7.1)中选择coalesce函数中的值。
Problem:执行此SQL语句.
select coalesce(select id from MY_TABLE limit 1);
..。引发此错误消息:
ERROR 1064 (42000): 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 'select id from MY_
使用MariaDB v. 10,我尝试在所有其他列*之前添加一个自定义常量作为SELECT查询的第一列。这将导致泛型语法错误1064。
例如:
# mysql -u root -p$mypass -D mysql -e "SELECT 'X', * FROM user;"
ERROR 1064 (42000) at line 1: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right
我将Node.js和TypeORM与MySQL一起使用,但是错误显示了MariaDB,我不知道为什么。我试图在用户实体中使用数组,这一定是错误
误差
QueryFailedError: ER_PARSE_ERROR: 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 '' at line 1
at processTicksAndReject
我有以下初始化脚本:
GRANT ALL PRIVILEGES ON *.* TO 'admin'@'%' WITH GRANT OPTION;
CREATE USER IF NOT EXISTS 'developer'@'%' IDENTIFIED BY 'devpassword1';
GRANT SELECT, INSERT, UPDATE, DELETE, CREATE, DROP, INDEX, ALTER ON *.* TO 'developer'@'%';
CREAT