-- 检查teacher表中的数据
SELECT 
    id,
    name,
    teacher_name,
    real_name,
    teacher_level,
    level,
    audit_status,
    status
FROM teacher
LIMIT 20;

-- 检查teacher_level字段的所有不同值
SELECT DISTINCT teacher_level, COUNT(*) as count
FROM teacher
GROUP BY teacher_level;

-- 检查level字段的所有不同值
SELECT DISTINCT level, COUNT(*) as count
FROM teacher
GROUP BY level;