MySQL - 基于多个表上的 SELECT 查询编写 UPDATE 查询

Question

我在 MySQL 或数据库方面还远远不够，所以我正在使用一个名为 FlySpeed SQL Query 的工具。这个工具帮助我以图形方式创建 MySQL 查询。 这是我使用此工具创建的查询，并在互联网上进行了大量阅读。

Select
  Employee.Firstname As Prénom,
  Employee.Name As NOM,
  TimeSheet.Filled As Validé,
  TimeSheet.Closed As Clôturé,
  Sum(Imputation.Hours) As `Somme des heures`,
  TimeSheet.Month + 1 As Mois,
  TimeSheet.Year As Année
From
  Employee Inner Join
  TimeSheet On TimeSheet.Employee_Id = Employee.Id Inner Join
  Imputation On Imputation.TimeSheet_Id = TimeSheet.Id Inner Join
  Project On Imputation.Project_Id = Project.Id
Where
  TimeSheet.Filled = '1' And
  (TimeSheet.Closed = '0' Or
    TimeSheet.Closed Is Null) And
  Imputation.Day <= Last_Day(Current_Date - Interval 1 Month) And Imputation.Day >= Date_Format(Current_Date - Interval 1 Month, '%Y-%m-01') And
  Project.Id != '1'
Group By
  Employee.Name, TimeSheet.Month + 1, TimeSheet.Year
Having
  Sum(Imputation.Hours) >= 5 * ((DateDiff(Last_Day(Current_Date - Interval 1 Month), Date_Format(Current_Date - Interval 1 Month, '%Y-%m-01')) + 1))
Order By
  Année,
  Mois,
  NOM

此查询返回的正是我想要的结果。保持与上面的 MySQL 查询相同的条件，我想将 Closed 字段更新为“1”。我想做一些那里有味道的东西:

-- UPDATE Query
--
UPDATE TimeSheet
SET Closed = '1'
--
-- UPDATE Query
From
Employee Inner Join
TimeSheet On TimeSheet.Employee_Id = Employee.Id Inner Join
Imputation On Imputation.TimeSheet_Id = TimeSheet.Id Inner Join
Project On Imputation.Project_Id = Project.Id
--
-- With those conditions
--
Where
TimeSheet.Filled = '1' And
(TimeSheet.Closed = '0' Or
    TimeSheet.Closed Is Null) And
-- Calculating a time range
Imputation.Day <= Last_Day(Current_Date - Interval 1 Month) And Imputation.Day >= Date_Format(Current_Date - Interval 1 Month, '%Y-%m-01') 
And
Project.Id != '1'
Group By
Employee.Name, TimeSheet.Month + 1, TimeSheet.Year
Having
-- Calculation : >= 5 times the number of days in the period
Sum(Imputation.Hours) >= 5 * ((DateDiff(Last_Day(Current_Date - Interval 1 Month), Date_Format(Current_Date - Interval 1 Month, '%Y-%m-01')) + 1))
---
-- With those conditions

所以我需要帮助将 SELECT 查询转换为 UPDATE 查询。请随时向我询问更多信息。

Answer 1

尝试将set操作移到joins之后:

UPDATE TimeSheet Inner Join 
   Employee On TimeSheet.Employee_Id = Employee.Id Inner Join
   Imputation On Imputation.TimeSheet_Id = TimeSheet.Id Inner Join
   Project On Imputation.Project_Id = Project.Id
--
-- With those conditions
--
SET TimeSheet.Closed = '1'
Where
    TimeSheet.Filled = '1' And
    (TimeSheet.Closed = '0' Or
    TimeSheet.Closed Is Null) And
    -- Calculating a time range
    Imputation.Day <= Last_Day(Current_Date - Interval 1 Month) And Imputation.Day >= Date_Format(Current_Date - Interval 1 Month, '%Y-%m-01') 
    And
    Project.Id != '1'
Group By
    Employee.Name, TimeSheet.Month + 1, TimeSheet.Year
Having
    -- Calculation : >= 5 times the number of days in the period
    Sum(Imputation.Hours) >= 5 * ((DateDiff(Last_Day(Current_Date - Interval 1 Month), Date_Format(Current_Date - Interval 1 Month, '%Y-%m-01')) + 1))
    ---