wuzhen update2

backend/sql/database_fix_teacher_name.sql

@@ -0,0 +1,131 @@
+-- ================================================================
+-- 贫困生认定申请表 teacher_name 字段修复脚本
+-- 文件: database_fix_teacher_name.sql
+-- 功能: 添加缺失的 teacher_name 字段，并确保允许NULL
+-- ================================================================
+
+USE hzdyjs_xg;
+
+-- 1. 检查 teacher_name 字段是否存在
+SELECT '开始检查 teacher_name 字段...' AS message;
+
+SELECT
+    COLUMN_NAME,
+    IS_NULLABLE,
+    COLUMN_DEFAULT,
+    DATA_TYPE
+FROM INFORMATION_SCHEMA.COLUMNS
+WHERE TABLE_SCHEMA = 'hzdyjs_xg'
+  AND TABLE_NAME = 'jcbt_poverty_application'
+  AND COLUMN_NAME = 'teacher_name';
+
+-- 2. 添加 teacher_name 字段（如果不存在）
+SET @sql = '';
+SELECT COUNT(*) INTO @count
+FROM INFORMATION_SCHEMA.COLUMNS
+WHERE TABLE_SCHEMA = 'hzdyjs_xg'
+  AND TABLE_NAME = 'jcbt_poverty_application'
+  AND COLUMN_NAME = 'teacher_name';
+
+SELECT IF(@count = 0,
+    'ALTER TABLE jcbt_poverty_application ADD COLUMN teacher_name varchar(100) DEFAULT NULL COMMENT ''班主任教师姓名'' AFTER teacher_id;',
+    'SELECT ''teacher_name 字段已存在，检查是否需要修改属性'' AS result;'
+) INTO @sql;
+
+PREPARE stmt FROM @sql;
+EXECUTE stmt;
+DEALLOCATE PREPARE stmt;
+
+-- 3. 修改 teacher_name 字段为允许 NULL（如果字段存在且不允许NULL）
+SET @sql = '';
+SELECT COUNT(*) INTO @count
+FROM INFORMATION_SCHEMA.COLUMNS
+WHERE TABLE_SCHEMA = 'hzdyjs_xg'
+  AND TABLE_NAME = 'jcbt_poverty_application'
+  AND COLUMN_NAME = 'teacher_name'
+  AND IS_NULLABLE = 'NO';
+
+SELECT IF(@count > 0,
+    'ALTER TABLE jcbt_poverty_application MODIFY COLUMN teacher_name varchar(100) DEFAULT NULL COMMENT ''班主任教师姓名'';',
+    'SELECT ''teacher_name 字段已允许NULL'' AS result;'
+) INTO @sql;
+
+PREPARE stmt FROM @sql;
+EXECUTE stmt;
+DEALLOCATE PREPARE stmt;
+
+SELECT '✅ teacher_name 字段修复完成' AS message;
+
+-- 4. 添加 teacher_id 字段（如果不存在）
+SET @sql = '';
+SELECT COUNT(*) INTO @count
+FROM INFORMATION_SCHEMA.COLUMNS
+WHERE TABLE_SCHEMA = 'hzdyjs_xg'
+  AND TABLE_NAME = 'jcbt_poverty_application'
+  AND COLUMN_NAME = 'teacher_id';
+
+SELECT IF(@count = 0,
+    'ALTER TABLE jcbt_poverty_application ADD COLUMN teacher_id bigint(20) DEFAULT NULL COMMENT ''班主任教师ID'' AFTER class_name;',
+    'SELECT ''teacher_id 字段已存在'' AS result;'
+) INTO @sql;
+
+PREPARE stmt FROM @sql;
+EXECUTE stmt;
+DEALLOCATE PREPARE stmt;
+
+-- 5. 确保 teacher_id 字段允许 NULL
+SELECT '检查 teacher_id 字段...' AS message;
+
+SET @sql = '';
+SELECT COUNT(*) INTO @count
+FROM INFORMATION_SCHEMA.COLUMNS
+WHERE TABLE_SCHEMA = 'hzdyjs_xg'
+  AND TABLE_NAME = 'jcbt_poverty_application'
+  AND COLUMN_NAME = 'teacher_id'
+  AND IS_NULLABLE = 'NO';
+
+SELECT IF(@count > 0,
+    'ALTER TABLE jcbt_poverty_application MODIFY COLUMN teacher_id bigint(20) DEFAULT NULL COMMENT ''班主任教师ID'';',
+    'SELECT ''teacher_id 字段已允许NULL或不存在'' AS result;'
+) INTO @sql;
+
+PREPARE stmt FROM @sql;
+EXECUTE stmt;
+DEALLOCATE PREPARE stmt;
+
+SELECT '✅ teacher_id 字段修复完成' AS message;
+
+-- 6. 验证修复结果
+SELECT '=== 修复结果验证 ===' AS message;
+
+SELECT
+    COLUMN_NAME AS '字段名',
+    DATA_TYPE AS '数据类型',
+    IS_NULLABLE AS '允许NULL',
+    COLUMN_DEFAULT AS '默认值',
+    COLUMN_COMMENT AS '注释'
+FROM INFORMATION_SCHEMA.COLUMNS
+WHERE TABLE_SCHEMA = 'hzdyjs_xg'
+  AND TABLE_NAME = 'jcbt_poverty_application'
+  AND COLUMN_NAME IN ('teacher_id', 'teacher_name')
+ORDER BY ORDINAL_POSITION;
+
+-- 7. 显示完整的字段结构确认
+SELECT '=== 相关字段结构确认 ===' AS message;
+
+SELECT
+    COLUMN_NAME AS '字段名',
+    DATA_TYPE AS '数据类型',
+    IS_NULLABLE AS '允许NULL',
+    COLUMN_DEFAULT AS '默认值',
+    COLUMN_COMMENT AS '注释'
+FROM INFORMATION_SCHEMA.COLUMNS
+WHERE TABLE_SCHEMA = 'hzdyjs_xg'
+  AND TABLE_NAME = 'jcbt_poverty_application'
+  AND COLUMN_NAME IN (
+    'class_id', 'class_name', 'teacher_id', 'teacher_name', 'recognition_group'
+  )
+ORDER BY ORDINAL_POSITION;
+
+SELECT '🎉 teacher_name 和 teacher_id 字段修复完成！' AS message;
+SELECT '📝 请重启后端服务以生效！' AS note;