如何为此编写mysql查询？

Question

我想查询哪个输出已完成人工的所有job_ID（JobDone）

我尝试在查询中使用内连接，但未能完成我所寻求的内容。

SELECT * FROM `jobs` WHERE Status='JobDone' GROUP BY Job_id

以上查询还返回仅完成一项工作的值。

Answer 1

使用join query

获取结果

select j1.Name,j2.Labor from jobcard j1 innerjoin jobs j2 on j1.job_ID=j2.job_ID where j2.Status='JobDone' GROUP BY j2.job_ID

Answer 2

我认为这是您的疑问：

SELECT j1.*, c.*
FROM jobs j1
INNER JOIN
(
    SELECT Job_ID
    FROM jobs
    GROUP BY Job_ID
    HAVING SUM(CASE WHEN Status <> 'JobDone' THEN 1 ELSE 0 END) = 0
) j2
    ON j1.Job_ID = j2.Job_ID
INNER JOIN Jobcard c
    ON t1.Job_ID = c.Job_ID

子查询聚合Job_id并断言每个状态都已完成。此子查询生成一组ID，然后用于确定从表中选择的完整记录。

我还在Jobcard表中添加了一个联接，但如果您愿意，可以随意将其删除。

Answer 3

试试这个

SELECT Job_ID FROM Jobs WHERE Status LIKE 'JobDone'

Answer 4

SELECT  a.Job_id,a.Labor,c.Name
FROM `jobs` a
   left join Jobcard c on a.Job_id=c.Job_id    
WHERE not exists (select b.Job_id
                  FROM jobs b
                  WHERE Status<>'JobDone' AND b.Job_id=a.Job_id) 

Answer 5

如果您还希望使用Jobcard表中的名称，请使用以下查询：

SELECT ht.*
INTO @CurrentOverviewTableName 
FROM @HistoryTableName ht
WHERE ht.LastUpdateDate = (SELECT MAX(h2.LastUpdateDate)
                           FROM @CurrentOverviewTableName ht2
                           WHERE ht2.id = ht.id
                          );

如果您不想获取名称，则无需加入表格，请使用以下查询：

{
    "message": "Missing Authentication Token"
}

Answer 6

你应该通过：Join with sql

无论如何，这是你的答案..

def main(): average = [] y_values = [] for x in range(0, 2501, 500): for i in range(250): average.append(calculate(x)) average = sum(average) print("{} euro, {} worpen".format(i, average//250)) y_values.append(average//250) x_values = [0, 500, 1000, 1500, 2000, 2500] y_values = [] plt.plot(x_values, y_values) plt.xlabel("Startgeld") plt.ylabel("Aantal worpen") plt.title("Monopoly") plt.show() def calculate(game_money): piece = monopoly.Piece() board = monopoly.Board() owns = possession(board) dice = throw() throw_count = 0 number = 0 total_throw = 0 while not all(owns.values()): number == throw() piece.move(number) total_throw = total_throw + number throw_count += 1 if total_throw > 40: game_money += 200 elif board.values[piece.location] > 0: if game_money > board.values[piece.location]: if owns[board.names[piece.location]] == False: owns[board.names[piece.location]] = True game_money = game_money - board.values[piece.location] return total_throw def throw(): dice = randint(1,6) + randint(1,6) return dice def possession(board): owns = {} for i in range(40): if board.values[i] > 0: owns[board.names[i]] = False return owns if __name__ == "__main__": main() 。

Answer 7

简单如下：

Select jobcard.job_id, jobs.labor from jobcard 
inner join jobs on jobs.job_id = jobcard.job_id 
where jobs.status = 'JobDone';

请注意您所写的内容：

SELECT * FROM `jobs` WHERE Status='JobDone' GROUP BY Job_id 

未显示已完成的作业的完整列表，因为您按job_id进行分组。你的陈述的正确之处是：

SELECT * FROM `jobs` WHERE Status='JobDone'