-- 查询单表数据库编码
show full columns from sys_user;

-- 查询编码
SHOW VARIABLES WHERE Variable_name LIKE 'character_set_%' OR Variable_name LIKE 'collation%';

-- 修改表编码
ALTER TABLE sys_user CONVERT TO CHARACTER SET utf8mb4;
ALTER TABLE account CONVERT TO CHARACTER SET utf8mb4;

-- 修改数据库编码
ALTER DATABASE mydb CHARACTER SET = utf8mb4 COLLATE = utf8mb4_unicode_ci;

ANF报错：
Remote object proxy returned error: Error Domain=NSCocoaErrorDomain Code=4099 "The connection to service named com.apple.commcenter.coretelephony.xpc was invalidated." UserInfo={NSDebugDescription=The connection to service named com.apple.commcenter.coretelephony.xpc was invalidated.}

解决办法：

在终端运行：
xcrun simctl spawn booted log config --mode "level:off" --subsystem com.apple.CoreTelephony

-- 查询数据库最大内容使用量
use master
go
select value,*  from sys.configurations  where name like '%max server memory (MB)%'
go


--下方是修改配置请谨慎使用
EXEC sp_configure 'show advanced options', 1  
RECONFIGURE WITH OVERRIDE
GO

exec sys.sp_configure 'max server memory (MB)',1024
RECONFIGURE WITH OVERRIDE
Go
select value,*  from sys.configurations   where name like '%max server memory (MB)%'

sqlserver控制台方法，在服务器属性设置：

一般需给系统预留一部分内存，修改后立即生效。

配置值：代表相关设置值 运行值:查看配置是否成功。

-- 获取SQL Server允许同时用户连接的最大数
select @@max_connections as max_connections;
-- 获取自上次启动 SQL Server服务 以来连接或试图连接的次数
SELECT @@CONNECTIONS as CONNECTIONS;

Following the release of the "Kunlun" chip at the developer conference last year, Baidu CTO Dr. Wang Haifeng at the Baidu AI conference, Wang Haifeng released a new chip - the far-field voice interactive chip "Hong Hao".

According to reports, the Hongjun chip uses the HiFi4 custom instruction set, dual-core DSP core, and the average power consumption is only 100mW. This chip is built according to the car standard, and will bring great convenience for car voice interaction, smart furniture and other scenes.

Considering that Baidu and Geely have already reached strategic cooperation in the fields of intelligent network, smart driving, smart home, e-commerce, etc., it is not difficult to guess that the Hongsheng chip is expected to be deployed in the vehicle system of Geely Automobile.

Obviously, after the voice interaction is greatly improved, the usage and convenience of the artificial intelligence assistant will be greatly improved.

As mentioned in the previous article, Kunlun, released last year's Baidu AI conference, was the industry's most powerful AI chip, using Samsung's 14nm process, with 260TOPS performance, 512GB/s bandwidth, 100W + power consumption, tens of thousands of small cores Composition.