1]假设Mysql已安装好，服务已启用

 

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2]

 

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3]

[FireDAC][Phys][MySQL] Unknown MySQL server host '<LOCAL>' (11004).
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127.0.0.1
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 4】

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[FireDAC][Phys][MySQL]-314. Cannot load vendor library [libmysql.dll,
libmariadb or libmysqld.dll]. 找不到指定的模块。
Hint: check it is in the PATH or application EXE directories, and has x86
bitness..
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在使用c++builder FIREDAC连接mysql时，出现[FireDac][Phys][MySQL]-314.
Cannot load vendor library [libmysql.dll orlibmysqlld.dll]这个问题

原因

使用的系统是win7 64位，Mysql是64位，而c++builder是32位的。

解决办法

在网上下载一个32位的libmysql.dll，放在C:\Windows\SysWOW64就可以了

https://blog.csdn.net/winniezhang/article/details/103726647

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5】insert 的子查询

SQLite里的写法

INSERT INTO ToDoListTable VALUES( (select max(id)+1 from ToDoListTable),'''+uniEdit1.Text+''',0)

Mysql里的写法

INSERT INTO ToDoListTable(id ,aName,isDone) select max(id)+1,'''+uniEdit1.Text+''',0 from  ToDoListTable