Advise to support MySQL5.7

[10xjzheng]

Now WrenAi supports MySQL 8.0 and above only, but many companies use MySQ 5.7 in their old system.
So, I Advise to support MySQL5.7.
I try to fill the setting of my system's Mysql 5.7, but the Wren AI no response, even no logs.

[wwwy3y3]

Thanks for reaching out! We really appreciate your feedback. Since MySQL 5.7 doesn’t support Common Table Expressions (CTEs), which we rely on heavily for SQL generation and breakdown, we’ll need some time to figure out how to address this limitation.