SELECT a.item_id, a.item_name, a.method_id, a.method_name, a.std_id, a.std_name, c.period, c.unit, c.db, d.stability_sub_scheme_code, d.inspection_type_id, e.scheme_code, e.scheme_name, d.placement_direction, g.dept_id FROM taskregistration_sample_item a INNER JOIN stability2_stability_scheme_period_item b ON a.rd = b.stability_sub_scheme_id INNER JOIN stability2_stability_scheme_period c ON b.stability_sub_scheme_id = c.stability_sub_scheme_id INNER JOIN stability2_stability_sub_schem d ON c.stability_sub_scheme_id = d.id INNER JOIN stability2_stability_schem e ON d.stability_scheme_id =e.id LEFT JOIN samplereceive_sample_assign_item_detail f ON a.id=f.sample_item_id LEFT JOIN samplereceive_sample_assign g ON f.assign_id=g.id WHERE c.period_state="1" ORDER BY e.scheme_code, d.stability_sub_scheme_code, c.db, a.item_name GROUP BY a.id; 这个SQL有问题嘛

根据您提供的SQL查询语句，我没有发现明显的语法错误。但是，您可能需要注意以下几点：

1. 在SELECT子句中，您使用了GROUP BY子句，但是没有使用聚合函数（例如SUM，COUNT等）。这可能导致在一些数据库管理系统中出现错误。如果您不需要使用聚合函数，请考虑删除GROUP BY子句。

2. 根据您的需求，您可能需要检查JOIN条件是否正确连接了所有表，并且每个表之间的关联是正确的。请确保表之间的关联字段正确匹配。

3. 在WHERE子句中，您使用了"c.period_state = '1'"条件。请确保该条件在数据库中有意义，并且该字段是正确的。

4. 在ORDER BY子句中，您使用了多个列进行排序。请确保这些列在查询的结果集中存在，并且指定的列名是正确的。

请注意，我只能提供语法和逻辑上的一般建议，具体问题还需要根据您的数据库结构和数据来进行调试和优化。

相关问题

优化 SELECT a.item_id, a.item_code, a.item_name, GROUP_CONCAT(b.channel_class_code) channelClassCodes, (SELECT count(*) FROM `tb_user_collection` where user_id = #{skuGoodDto.userId} and target_id = a.item_code) AS isCollect FROM osy_item AS a LEFT JOIN osy_item_sale AS b ON a.item_id = b.item_id where a.usable = 2 and b.usable = 2 and (b.channel_class_code = 10 or b.channel_class_code = 22) GROUP BY a.item_id

根据您提供的 SQL 查询语句，可以对其进行一些优化。首先，可以使用 IN 关键字来简化 WHERE 子句中的多个条件判断，将

(b.channel_class_code = 10 or b.channel_class_code = 22)

修改为

b.channel_class_code IN (10, 22)

接下来，可以使用 LEFT JOIN 连接 osy_item 和 osy_item_sale 表，然后再使用 GROUP BY 子句对结果进行分组。这样可以避免在 SELECT 子查询中使用子查询。

下面是优化后的 SQL 查询语句：

SELECT a.item_id,
       a.item_code,
       a.item_name,
       GROUP_CONCAT(b.channel_class_code) AS channelClassCodes,
       COUNT(c.target_id) AS isCollect
FROM osy_item AS a
LEFT JOIN osy_item_sale AS b ON a.item_id = b.item_id
LEFT JOIN tb_user_collection AS c ON c.target_id = a.item_code AND c.user_id = #{skuGoodDto.userId}
WHERE a.usable = 2
      AND b.usable = 2
      AND b.channel_class_code IN (10, 22)
GROUP BY a.item_id;

请注意，上述 SQL 查询语句中的 `#{skuGoodDto.userId}` 是占位符，您需要根据实际情况将其替换为相应的用户 ID 值。

编写存储过程 SELECT a.order_id, a.done_date, a.cust_id, a.subscriber_ins_id, a.access_num, c.dev_id, c.dev_name, c.corp_org, c.company_name, c.department_code, c.department_name, c.remarks FROM JOUR1.Om_Subscriber_202301 a LEFT JOIN JOUR1.om_order_202301 b ON a.order_id = b.order_id LEFT JOIN params1.sec_developer c ON b.dev_id = c.dev_id UNION ALL SELECT a.order_id, a.done_date, a.cust_id, a.subscriber_ins_id, a.access_num, c.dev_id, c.dev_name, c.corp_org, c.company_name, c.department_code, c.department_name, c.remarks FROM JOUR1.Om_Subscriber_202302 a LEFT JOIN JOUR1.om_order_202302 b ON a.order_id = b.order_id LEFT JOIN params1.sec_developer c ON b.dev_id = c.dev_id UNION ALL SELECT a.order_id, a.done_date, a.cust_id, a.subscriber_ins_id, a.access_num, c.dev_id, c.dev_name, c.corp_org, c.company_name, c.department_code, c.department_name, c.remarks FROM JOUR1.Om_Subscriber_202303 a LEFT JOIN JOUR1.om_order_202303 b ON a.order_id = b.order_id LEFT JOIN params1.sec_developer c ON b.dev_id = c.dev_id UNION ALL SELECT a.order_id, a.done_date, a.cust_id, a.subscriber_ins_id, a.access_num, c.dev_id, c.dev_name, c.corp_org, c.company_name, c.department_code, c.department_name, c.remarks FROM JOUR1.Om_Subscriber_202304 a LEFT JOIN JOUR1.om_order_202304 b ON a.order_id = b.order_id LEFT JOIN params1.sec_developer c ON b.dev_id = c.dev_id

你可以编写一个存储过程来执行这个查询。下面是一个示例：

CREATE OR REPLACE PROCEDURE get_data AS
BEGIN
  -- 创建临时表来保存结果
  CREATE GLOBAL TEMPORARY TABLE temp_data (
    order_id          NUMBER,
    done_date         DATE,
    cust_id           NUMBER,
    subscriber_ins_id NUMBER,
    access_num        VARCHAR2(100),
    dev_id            NUMBER,
    dev_name          VARCHAR2(100),
    corp_org          VARCHAR2(100),
    company_name      VARCHAR2(100),
    department_code   VARCHAR2(100),
    department_name   VARCHAR2(100),
    remarks           VARCHAR2(100)
  ) ON COMMIT PRESERVE ROWS;

  -- 第一个查询
  INSERT INTO temp_data
  SELECT a.order_id,
         a.done_date,
         a.cust_id,
         a.subscriber_ins_id,
         a.access_num,
         c.dev_id,
         c.dev_name,
         c.corp_org,
         c.company_name,
         c.department_code,
         c.department_name,
         c.remarks
  FROM JOUR1.Om_Subscriber_202301 a
  LEFT JOIN JOUR1.om_order_202301 b
    ON a.order_id = b.order_id
  LEFT JOIN params1.sec_developer c
    ON b.dev_id = c.dev_id;

  -- 后续查询使用UNION ALL连接
  INSERT INTO temp_data
  SELECT a.order_id,
         a.done_date,
         a.cust_id,
         a.subscriber_ins_id,
         a.access_num,
         c.dev_id,
         c.dev_name,
         c.corp_org,
         c.company_name,
         c.department_code,
         c.department_name,
         c.remarks
  FROM JOUR1.Om_Subscriber_202302 a
  LEFT JOIN JOUR1.om_order_202302 b
    ON a.order_id = b.order_id
  LEFT JOIN params1.sec_developer c
    ON b.dev_id = c.dev_id;

  INSERT INTO temp_data
  SELECT a.order_id,
         a.done_date,
         a.cust_id,
         a.subscriber_ins_id,
         a.access_num,
         c.dev_id,
         c.dev_name,
         c.corp_org,
         c.company_name,
         c.department_code,
         c.department_name,
         c.remarks
  FROM JOUR1.Om_Subscriber_202303 a
  LEFT JOIN JOUR1.om_order_202303 b
    ON a.order_id = b.order_id
  LEFT JOIN params1.sec_developer c
    ON b.dev_id = c.dev_id;

  INSERT INTO temp_data
  SELECT a.order_id,
         a.done_date,
         a.cust_id,
         a.subscriber_ins_id,
         a.access_num,
         c.dev_id,
         c.dev_name,
         c.corp_org,
         c.company_name,
         c.department_code,
         c.department_name,
         c.remarks
  FROM JOUR1.Om_Subscriber_202304 a
  LEFT JOIN JOUR1.om_order_202304 b
    ON a.order_id = b.order_id
  LEFT JOIN params1.sec_developer c
    ON b.dev_id = c.dev_id;

  -- 查询结果
  SELECT * FROM temp_data;

  -- 删除临时表
  DROP TABLE temp_data;
END;
/

这个存储过程创建了一个临时表 `temp_data` 来保存查询结果，并将每个查询的结果插入到临时表中。最后，通过查询 `temp_data` 表来获取结果。

请注意，根据你的实际需求和数据库结构，你可能需要修改表和列的定义，以及查询的逻辑。确保在执行存储过程之前，已经创建了所需的表和索引。