MySQL プロシージャ実行時に文字化けとか Incorrect string value とか

ブラウザの文字コード UTF-8

mysql> status
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Server characterset:    latin1
Db     characterset:    utf8
Client characterset:    latin1
Conn.  characterset:    latin1
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

エラーがなく通るも、画面上で文字化け

mysql> charset utf8
mysql> status
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Server characterset:    latin1
Db     characterset:    utf8
Client characterset:    utf8
Conn.  characterset:    utf8
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

プロシージャ実行中にエラー
ERROR 1366 (HY000): Incorrect string value: 'xxxxxxxxx' for column 'xxxxxxxx' at row xx

mysql> SET character_set_client = sjis;
mysql> status
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Server characterset:    latin1
Db     characterset:    utf8
Client characterset:    sjis
Conn.  characterset:    latin1
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

エラーなく通るも、画面上で文字化け

mysql> SET character_set_client = sjis;
mysql> SET character_set_connection = utf8;
mysql> status
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Server characterset:    latin1
Db     characterset:    utf8
Client characterset:    sjis
Conn.  characterset:    utf8
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

問題なく通る