heheng
2025-07-01 3341599719e0ae63889b6bfb4eea3cf4521b0ab8
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ALTER TABLE `train_exam`.`ex_student_answer`
MODIFY COLUMN `answer` text CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci NULL COMMENT '答案';
 
ALTER TABLE `train_exam`.`ex_exercise_answer`
MODIFY COLUMN `answer` text CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci  NULL COMMENT '答案';