52 lines
1.3 KiB
SQL
52 lines
1.3 KiB
SQL
-- 仅查询课件时长情况（只读操作，不需要修改权限）
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-- 执行日期：2025-12-05
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USE ry_study;
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-- 1. 查看当前课程1的所有课件时长情况
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SELECT
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id,
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name,
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type,
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duration,
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file_path,
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CASE
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WHEN duration IS NULL THEN '⚠️ NULL'
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WHEN duration = 0 THEN '⚠️ 0'
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ELSE '✅ 正常'
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END as status
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FROM courseware
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WHERE course_id = 1
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ORDER BY id;
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-- 2. 检查学习详情中的最大播放位置（可以作为duration的参考）
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SELECT
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c.id as courseware_id,
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c.name,
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c.type,
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c.duration as configured_duration,
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MAX(ld.video_end_position) as max_position,
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COUNT(ld.id) as record_count,
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CASE
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WHEN c.duration IS NULL OR c.duration = 0 THEN
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CONCAT('建议设置为: ', MAX(ld.video_end_position))
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WHEN MAX(ld.video_end_position) > c.duration THEN
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CONCAT('⚠️ 实际更长: ', MAX(ld.video_end_position), '秒')
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ELSE '✅ 正常'
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END as recommendation
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FROM courseware c
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LEFT JOIN learning_detail ld ON ld.courseware_id = c.id
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WHERE c.course_id = 1
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GROUP BY c.id, c.name, c.type, c.duration
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ORDER BY c.id;
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-- 3. 查看课件882和873的具体情况
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SELECT
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id,
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name,
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type,
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duration,
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file_path
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FROM courseware
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WHERE id IN (882, 873) AND course_id = 1;
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