-- 社保公积金方案：改为「按部门绑定」
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-- 1) 方案表增加默认缴费基数（不选部门的员工按它计算）
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-- 2) 新增「方案 - 适用部门」关联表（一个方案可绑定多个部门；一个部门只能绑定一个方案，唯一性在服务层校验）
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-- 说明：ALTER TABLE ADD COLUMN 不支持 IF NOT EXISTS，这里先查 information_schema 再决定是否执行
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SET @db := DATABASE();
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-- 1.1 默认社保缴费基数
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SET @exists := (SELECT COUNT(*) FROM information_schema.columns
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WHERE table_schema = @db AND table_name = 'hrm_social_security_scheme'
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AND column_name = 'default_social_security_base');
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SET @sql := IF(@exists = 0,
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'ALTER TABLE `hrm_social_security_scheme` ADD COLUMN `default_social_security_base` decimal(12,2) DEFAULT NULL COMMENT ''默认社保缴费基数（空则用员工基本工资）'' AFTER `housing_fund_personal_ratio`',
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'SELECT 1');
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PREPARE stmt FROM @sql; EXECUTE stmt; DEALLOCATE PREPARE stmt;
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-- 1.2 默认公积金缴费基数
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SET @exists := (SELECT COUNT(*) FROM information_schema.columns
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WHERE table_schema = @db AND table_name = 'hrm_social_security_scheme'
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AND column_name = 'default_housing_fund_base');
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SET @sql := IF(@exists = 0,
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'ALTER TABLE `hrm_social_security_scheme` ADD COLUMN `default_housing_fund_base` decimal(12,2) DEFAULT NULL COMMENT ''默认公积金缴费基数（空或 0 则用社保缴费基数）'' AFTER `default_social_security_base`',
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'SELECT 1');
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PREPARE stmt FROM @sql; EXECUTE stmt; DEALLOCATE PREPARE stmt;
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-- 2. 方案 - 适用部门关联表
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CREATE TABLE IF NOT EXISTS `hrm_social_security_scheme_dept` (
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`id` bigint NOT NULL AUTO_INCREMENT COMMENT '主键',
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`scheme_id` bigint NOT NULL COMMENT '社保公积金方案ID',
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`dept_id` bigint NOT NULL COMMENT '适用部门ID',
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`creator` varchar(64) DEFAULT '' COMMENT '创建人',
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`create_time` datetime NOT NULL DEFAULT CURRENT_TIMESTAMP COMMENT '创建时间',
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`updater` varchar(64) DEFAULT '' COMMENT '更新人',
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`update_time` datetime NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP COMMENT '更新时间',
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`deleted` bit(1) NOT NULL DEFAULT b'0' COMMENT '是否删除',
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PRIMARY KEY (`id`),
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KEY `idx_scheme_id` (`scheme_id`),
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KEY `idx_dept_id` (`dept_id`)
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) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COMMENT '社保公积金方案适用部门';
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-- 回滚（如需）：
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-- ALTER TABLE `hrm_social_security_scheme` DROP COLUMN `default_social_security_base`, DROP COLUMN `default_housing_fund_base`;
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-- DROP TABLE IF EXISTS `hrm_social_security_scheme_dept`;
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