Increasing the database configuration: the effect is not execution set names utf8mb4 before sql execution;
Set names utf8mb4 effect is performed: the value of environment variable to configure three utf8mb4; below
initconnect='set names utf8mb4'
After configuration, database configuration is actually in force, but is covered by the initialization sql jdbc out:
Such as database logs: the same link as 102: set names utf8mb4 before performing a database configuration performed, followed by another to perform a set names utf8 is jdbc link execution, it covers the configuration database led to no avail; therefore query the character set utf8mb4 or error
Execution set names utf8 source package Location:
Execution set names utf8 source code location: will be determined prior to each execution sql useutf8mb4 true or false to perform pre-configuration corresponding to sql;
It is not known how to solve this case, the chiefs know that you can tell what; (mainly this.io.serverCharsetIndex not CharsetMapping in)
