jseesite4 腳本執行索引在MySQL 5.7 提示Specified key was too long; max key length is 3072 bytes的解決

Error executing: CREATE INDEX idx_bpm_form_pcs ON js_bpm_form (parent_codes ASC) .  Cause: com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Specified key was too long; max key length is 3072

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