合并分支：合并课程两步式向导与教学资源关联管理能力
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@@ -3,7 +3,7 @@
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-- 适用数据库: KingbaseES V009R003C018 (schema: public)
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-- 执行目标:
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-- 1. 补齐学员、教师、教室、实训场地、课程主数据新增扩展字段 (11个物理列)
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-- 2. 创建统一教学资源表 (train_resource) 及其索引与字典
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-- 2. 创建统一教学资源表及课程-资源规范关联表
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-- 3. 补齐教学资源管理菜单 (sys_menu) 与培训管理员/超级管理员角色授权 (sys_role_menu)
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-- 事务边界: 全程在显式事务 BEGIN ... COMMIT 中执行
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-- 幂等保证: 全部 DDL / DML 均具备 IF NOT EXISTS 或 NOT EXISTS 守卫，可安全重复执行
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@@ -45,10 +45,6 @@ ALTER TABLE public.train_training_site ADD COLUMN IF NOT EXISTS seat_arrange VAR
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COMMENT ON COLUMN public.train_training_site.major IS '适用专业/实训工种';
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COMMENT ON COLUMN public.train_training_site.seat_arrange IS '工位布局形式';
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-- 1.5 课程表 train_course 增加 资源ID关联串 (逗号分隔资源ID)
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ALTER TABLE public.train_course ADD COLUMN IF NOT EXISTS resource_id VARCHAR(500);
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COMMENT ON COLUMN public.train_course.resource_id IS '关联教学资源ID集合 (逗号分隔)';
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-- =============================================================================
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-- 步骤 2: 创建统一教学资源表 (train_resource)
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-- =============================================================================
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@@ -81,6 +77,9 @@ COMMENT ON COLUMN public.train_resource.del_flag IS '删除标志 (0:存在, 2:
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CREATE INDEX IF NOT EXISTS idx_train_resource_type ON public.train_resource (resource_type);
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CREATE INDEX IF NOT EXISTS idx_train_resource_status ON public.train_resource (status);
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-- 步骤 2 结束: 教学资源表创建完成。课程资源多对多关联见增量迁移脚本 012。
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-- =============================================================================
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-- 步骤 3: 补齐教学资源类型字典 (train_resource_type)
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-- =============================================================================
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@@ -0,0 +1,91 @@
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-- ==============================================================================
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-- RailwaySystem 数据库 V2 增量迁移脚本: 012_pilot_20261010_course_resource_relation.sql
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-- 适用数据库: KingbaseES V009R003C018 (schema: public)
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-- 执行目标: 创建课程与教学资源规范多对多关系表 (train_course_resource)，迁移历史关联，保留物理字段兼容
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-- 架构方案: 改进 B+ 方案 (唯一权威存储为 train_course_resource；保留 train_course.resource_id 禁止 DROP COLUMN)
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-- ==============================================================================
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BEGIN;
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-- 步骤 1: 创建规范课程资源多对多关联表
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CREATE TABLE IF NOT EXISTS public.train_course_resource (
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id BIGINT GENERATED BY DEFAULT AS IDENTITY,
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c_id VARCHAR(32) NOT NULL,
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resource_id VARCHAR(32) NOT NULL,
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sort_no INTEGER DEFAULT 0,
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create_by VARCHAR(64),
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create_time TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP,
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CONSTRAINT pk_train_course_resource PRIMARY KEY (id)
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);
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COMMENT ON TABLE public.train_course_resource IS '课程与教学资源关联表 (N:M 唯一权威存储)';
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COMMENT ON COLUMN public.train_course_resource.id IS '主键ID';
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COMMENT ON COLUMN public.train_course_resource.c_id IS '课程ID';
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COMMENT ON COLUMN public.train_course_resource.resource_id IS '教学资源ID';
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COMMENT ON COLUMN public.train_course_resource.sort_no IS '课程内资源排序号';
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COMMENT ON COLUMN public.train_course_resource.create_by IS '绑定操作人';
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COMMENT ON COLUMN public.train_course_resource.create_time IS '绑定时间';
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-- 步骤 2: 创建索引与唯一约束 (保证幂等防重复)
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CREATE UNIQUE INDEX IF NOT EXISTS uq_course_resource
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ON public.train_course_resource (c_id, resource_id);
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CREATE INDEX IF NOT EXISTS idx_course_resource_course
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ON public.train_course_resource (c_id);
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CREATE INDEX IF NOT EXISTS idx_course_resource_resource
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ON public.train_course_resource (resource_id);
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-- 外键约束 (如果不存在则添加)
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DO $$
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BEGIN
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IF NOT EXISTS (SELECT 1 FROM pg_constraint WHERE conname = 'fk_cr_course') THEN
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ALTER TABLE public.train_course_resource
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ADD CONSTRAINT fk_cr_course FOREIGN KEY (c_id)
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REFERENCES public.train_course (c_id);
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END IF;
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IF NOT EXISTS (SELECT 1 FROM pg_constraint WHERE conname = 'fk_cr_resource') THEN
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ALTER TABLE public.train_course_resource
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ADD CONSTRAINT fk_cr_resource FOREIGN KEY (resource_id)
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REFERENCES public.train_resource (resource_id);
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END IF;
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END $$;
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-- 步骤 3: 幂等迁移历史 train_course.resource_id 字段数据
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-- 仅当 train_course.resource_id 非空且关联在 train_resource 中有效(del_flag='0')时迁移，
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-- 且 ON CONFLICT (c_id, resource_id) DO NOTHING 避免覆盖已存在的关联，亦不破坏已解绑关系。
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DO $$
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BEGIN
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IF EXISTS (
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SELECT 1 FROM information_schema.columns
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WHERE table_schema = 'public'
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AND table_name = 'train_course'
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AND column_name = 'resource_id'
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) THEN
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INSERT INTO public.train_course_resource
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(c_id, resource_id, sort_no, create_by, create_time)
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SELECT legacy.c_id,
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legacy.resource_id,
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legacy.sort_no,
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'migration_012',
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CURRENT_TIMESTAMP
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FROM (
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SELECT c.c_id,
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trim(parts.resource_id) AS resource_id,
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CAST(parts.ordinality - 1 AS INTEGER) AS sort_no
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FROM public.train_course c
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CROSS JOIN LATERAL regexp_split_to_table(c.resource_id, ',')
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WITH ORDINALITY AS parts(resource_id, ordinality)
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WHERE c.resource_id IS NOT NULL
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AND trim(c.resource_id) <> ''
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) legacy
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JOIN public.train_resource r
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ON r.resource_id = legacy.resource_id
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AND r.del_flag = '0'
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WHERE legacy.resource_id <> ''
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ON CONFLICT (c_id, resource_id) DO NOTHING;
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END IF;
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END $$;
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-- 注意：根据改进 B+ 方案决策，train_course.resource_id 物理字段必须永久保留（供向下兼容只读/兼容调用），
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-- 禁止执行 ALTER TABLE train_course DROP COLUMN resource_id！
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COMMIT;
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+2
-4
@@ -14,8 +14,8 @@ DELETE FROM public.sys_menu WHERE menu_id IN (2270, 2271, 2272);
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DELETE FROM public.sys_dict_data WHERE dict_type = 'train_resource_type';
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DELETE FROM public.sys_dict_type WHERE dict_type = 'train_resource_type';
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-- 3. 删除教学资源表及索引
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DROP TABLE IF EXISTS public.train_resource CASCADE;
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-- 3. 删除教学资源表及索引 (无 CASCADE 保护数据安全；train_course_resource 回滚见 012 回滚脚本)
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DROP TABLE IF EXISTS public.train_resource;
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-- 4. 删除主数据扩展列
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ALTER TABLE public.train_student DROP COLUMN IF EXISTS avatar;
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@@ -33,6 +33,4 @@ ALTER TABLE public.train_classroom_info DROP COLUMN IF EXISTS seat_arrange;
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ALTER TABLE public.train_training_site DROP COLUMN IF EXISTS major;
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ALTER TABLE public.train_training_site DROP COLUMN IF EXISTS seat_arrange;
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ALTER TABLE public.train_course DROP COLUMN IF EXISTS resource_id;
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COMMIT;
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+14
@@ -0,0 +1,14 @@
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-- ==============================================================================
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-- RailwaySystem 数据库 V2 回滚脚本: 012_pilot_20261010_course_resource_relation_rollback.sql
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-- 适用数据库: KingbaseES V009R003C018 (schema: public)
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-- 执行目标: 安全回滚 012_pilot_20261010_course_resource_relation.sql 的变更
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-- ==============================================================================
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BEGIN;
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-- 移除外键约束与关联表（禁止 CASCADE）
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ALTER TABLE IF EXISTS public.train_course_resource DROP CONSTRAINT IF EXISTS fk_cr_course;
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ALTER TABLE IF EXISTS public.train_course_resource DROP CONSTRAINT IF EXISTS fk_cr_resource;
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DROP TABLE IF EXISTS public.train_course_resource;
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COMMIT;
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