-- 存量库：客户出口资质备案表（含 IsDefault / Remark）
-- 可重复执行。
-- 目标表：t_customer_export_qualification

SET @db := DATABASE();

-- 1) 表不存在则整表创建
SET @exists := (
  SELECT COUNT(1)
  FROM information_schema.TABLES
  WHERE TABLE_SCHEMA = @db
    AND TABLE_NAME = 't_customer_export_qualification'
);

SET @sql := IF(
  @exists = 0,
  'CREATE TABLE `t_customer_export_qualification` (
  `Id` INT NOT NULL AUTO_INCREMENT COMMENT ''主键'',
  `CustomerId` INT NOT NULL COMMENT ''归属客户 t_customer.Id'',
  `CompanyName` VARCHAR(200) NOT NULL COMMENT ''企业名称'',
  `SocialCreditCode` VARCHAR(64) NOT NULL COMMENT ''企业社会信用代码'',
  `DomesticConsignor` VARCHAR(200) NOT NULL COMMENT ''境内发货人'',
  `DomesticConsignorCustomsCode` VARCHAR(64) NULL COMMENT ''境内发货人海关代码'',
  `ProducerName` VARCHAR(200) NOT NULL COMMENT ''生产销售单位'',
  `ProducerCustomsCode` VARCHAR(64) NULL COMMENT ''生产销售单位海关代码'',
  `CustomsPort` VARCHAR(100) NULL COMMENT ''备案海关港口地'',
  `IsDefault` TINYINT NOT NULL DEFAULT 0 COMMENT ''是否默认：0-否，1-是（同客户仅一条）'',
  `Remark` VARCHAR(512) NULL COMMENT ''备注'',
  `IsDeleted` TINYINT NOT NULL DEFAULT 0 COMMENT ''软删除：0-否，1-是'',
  `ConcurrencyStamp` CHAR(36) NOT NULL DEFAULT (UUID()) COMMENT ''并发戳'',
  `CreateUserId` INT NOT NULL DEFAULT 0 COMMENT ''创建人'',
  `CreateTime` DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP COMMENT ''创建时间'',
  `UpdateUserId` INT NULL COMMENT ''更新人'',
  `UpdateTime` DATETIME NULL COMMENT ''更新时间'',
  PRIMARY KEY (`Id`),
  KEY `idx_ceq_customer` (`CustomerId`, `IsDeleted`, `Id`),
  KEY `idx_ceq_credit` (`SocialCreditCode`, `IsDeleted`),
  KEY `idx_ceq_customer_default` (`CustomerId`, `IsDefault`)
) COMMENT=''客户出口资质备案''',
  'SELECT ''t_customer_export_qualification already exists'' AS info'
);

PREPARE stmt FROM @sql;
EXECUTE stmt;
DEALLOCATE PREPARE stmt;

-- 2) 已建表但缺 IsDefault 时补列
SET @col := (
  SELECT COUNT(1)
  FROM information_schema.COLUMNS
  WHERE TABLE_SCHEMA = @db
    AND TABLE_NAME = 't_customer_export_qualification'
    AND COLUMN_NAME = 'IsDefault'
);
SET @sql := IF(
  @col = 0,
  'ALTER TABLE `t_customer_export_qualification`
     ADD COLUMN `IsDefault` TINYINT NOT NULL DEFAULT 0 COMMENT ''是否默认：0-否，1-是（同客户仅一条）'' AFTER `CustomsPort`',
  'SELECT ''IsDefault already exists'' AS info'
);
PREPARE stmt FROM @sql;
EXECUTE stmt;
DEALLOCATE PREPARE stmt;

-- 3) 已建表但缺 Remark 时补列
SET @col := (
  SELECT COUNT(1)
  FROM information_schema.COLUMNS
  WHERE TABLE_SCHEMA = @db
    AND TABLE_NAME = 't_customer_export_qualification'
    AND COLUMN_NAME = 'Remark'
);
SET @sql := IF(
  @col = 0,
  'ALTER TABLE `t_customer_export_qualification`
     ADD COLUMN `Remark` VARCHAR(512) NULL COMMENT ''备注'' AFTER `IsDefault`',
  'SELECT ''Remark already exists'' AS info'
);
PREPARE stmt FROM @sql;
EXECUTE stmt;
DEALLOCATE PREPARE stmt;

-- 4) 默认索引
SET @idx := (
  SELECT COUNT(1)
  FROM information_schema.STATISTICS
  WHERE TABLE_SCHEMA = @db
    AND TABLE_NAME = 't_customer_export_qualification'
    AND INDEX_NAME = 'idx_ceq_customer_default'
);
SET @sql := IF(
  @idx = 0,
  'ALTER TABLE `t_customer_export_qualification` ADD KEY `idx_ceq_customer_default` (`CustomerId`, `IsDefault`)',
  'SELECT ''idx_ceq_customer_default already exists'' AS info'
);
PREPARE stmt FROM @sql;
EXECUTE stmt;
DEALLOCATE PREPARE stmt;