-- 检查xg_student_info表的实际结构
-- 用于确认哪些字段存在于数据库中

USE hzdyjs_xg;

-- 显示表结构
DESCRIBE xg_student_info;

-- 显示所有字段名
SELECT COLUMN_NAME, DATA_TYPE, IS_NULLABLE, COLUMN_DEFAULT, COLUMN_COMMENT
FROM information_schema.COLUMNS 
WHERE table_schema = 'hzdyjs_xg' 
AND table_name = 'xg_student_info'
ORDER BY ORDINAL_POSITION;

-- 检查特定字段是否存在
SELECT 
    CASE WHEN COUNT(*) > 0 THEN 'EXISTS' ELSE 'NOT EXISTS' END as nation_status
FROM information_schema.COLUMNS 
WHERE table_schema = 'hzdyjs_xg' 
AND table_name = 'xg_student_info' 
AND column_name = 'nation';

SELECT 
    CASE WHEN COUNT(*) > 0 THEN 'EXISTS' ELSE 'NOT EXISTS' END as name_english_status
FROM information_schema.COLUMNS 
WHERE table_schema = 'hzdyjs_xg' 
AND table_name = 'xg_student_info' 
AND column_name = 'name_english';

SELECT 
    CASE WHEN COUNT(*) > 0 THEN 'EXISTS' ELSE 'NOT EXISTS' END as phone_status
FROM information_schema.COLUMNS 
WHERE table_schema = 'hzdyjs_xg' 
AND table_name = 'xg_student_info' 
AND column_name = 'phone';

SELECT 
    CASE WHEN COUNT(*) > 0 THEN 'EXISTS' ELSE 'NOT EXISTS' END as mobile_status
FROM information_schema.COLUMNS 
WHERE table_schema = 'hzdyjs_xg' 
AND table_name = 'xg_student_info' 
AND column_name = 'mobile';