使用join语句加入子查询

Posted 2021-04-20

尝试将子查询应用于表以便能够对其进行分组。

主要查询

 SELECT soitem.fsono, fpartno, soitem.fcfromno, finumber
 FROM soitem 
 INNER JOIN somast on soitem.fsono = somast.fsono  
 WHERE somast.fsono='034313'  
 ORDER by soitem.fsono, soitem.finumber

子查询

SELECT min(sq.finumber), sq.fcfromno 
FROM soitem sq 
WHERE sq.fsono='034313' 
GROUP BY sq.fcfromno   

我想使用min_finumber进一步分组我的数据集。这应该显示为三行。我使用原始问题作为将子查询合并到我的整体代码中的方法。我的主要目标是成功组织min_number

SELECT somast.fsono, 
somast.fcustno, 
somast.fcontact, 
somast.fcustpono, 
somast.fshipvia, 
somast.forderdate, 
somast.fduedate,
 soship.fccompany, 
 soship.fcphone, 
  REPLACE(REPLACE(CONVERT(VARCHAR(MAX), soship.fmstreet), CHAR(13), '|'), CHAR(10), ' ') AS Street,
soship.fccity,
 soship.fcstate, 
 soship.fczip,
 CAST(somast.fackmemo as CHAR(35)) as ShipCode, 
 somast.fordername,
  somast.fcusrchr2,
somast.fcusrchr3,
somast.fcusrchr1, 
somast.festimator, 
soitem.fcfromno, 
 soitem.fcfromtype,
  CASE WHEN soitem.fcfromtype <> 'IFPKIT' THEN soitem.fpartno ELSE soitem.fcfromno END AS Item, 
 CASE WHEN soitem.fcfromtype <> 'IFPKIT' THEN soitem.fquantity ELSE soitem.fquantity / soitem.fquoteqty END AS Qty, 
CASE WHEN soitem.fcfromtype <> 'IFPKIT' 
THEN CAST(soitem.fdesc as CHAR(35))
ELSE 'Store Set (Phantom)' END as Descr

FROM soitem INNER JOIN
 somast ON soitem.fsono = somast.fsono LEFT OUTER JOIN
 soship ON somast.fsono = soship.fcsono AND soship.fcenumber = ''

WHERE   
(somast.fstatus <> 'Cancelled') AND (somast.fsocoord = 'IFP' OR
 somast.fsocoord = '711')
 Group By REPLACE(REPLACE(CONVERT(VARCHAR(MAX), soship.fmstreet), CHAR(13), '|'), CHAR(10), ' '),
 CAST(somast.fackmemo as CHAR(35)),
 somast.fsono,
somast.fcustno,
fcontact,
fcustpono,
fshipvia,
forderdate,
somast.fduedate,

CASE WHEN soitem.fcfromtype<>'IFPKIT' 
THEN soitem.fpartno 
ELSE soitem.fcfromno END,

CASE WHEN soitem.fcfromtype<>'IFPKIT' 
THEN soitem.fquantity 
ELSE soitem.fquantity/soitem.fquoteqty END,

CASE WHEN soitem.fcfromtype <> 'IFPKIT' 
THEN CAST(soitem.fdesc as CHAR(35))
ELSE 'Store Set (Phantom)' END,

soship.fccity, 
soship.fcstate, 
soship.fczip,
fordername, 
fcusrchr2, 
fcusrchr3,
 fcusrchr1, 
festimator,
soitem.fcfromno, 
soitem.fcfromtype,
 soship.fccompany,
  soship.fcphone

ORDER BY somast.forderdate, somast.fsono, soitem.fcfromno

答案

由于您使用的是SQL Server 2008 R2，因此您可以访问所需的窗口功能。尝试类似的东西：

SQL Fiddle

SQL Server 2017架构设置：

CREATE TABLE soitem 
(
     fsono INT, 
     fpartno INT,
     soitem INT, 
     finumber INT, 
     fcfromno INT
);

INSERT INTO soitem (fsono, fpartno, soitem, finumber, fcfromno)
VALUES (1, 1, 1, 1, 1), (1, 2, 2, 5, 1), 
       (2, 2, 2, 9, 2), (2, 2, 2, 2, 2),
       (3, 2, 2, 1, 9);

CREATE TABLE somast (fsono int) ;

INSERT INTO somast (fsono)
VALUES (1), (2);

主要查询：

SELECT 
    soitem.fsono,
    soitem.fpartno,
    soitem.fcfromno,
    soitem.finumber,
    /* THE BELOW PART IS YOUR "JOIN" */
    MIN(soitem.finumber) OVER (PARTITION BY soitem.fsono, soitem.fcfromno) AS min_finumber
FROM 
    soitem 
INNER JOIN 
    somast ON soitem.fsono = somast.fsono  
WHERE 
    somast.fsono = '1'
ORDER BY
    soitem.fsono, soitem.finumber

Results：

| fsono | fpartno | fcfromno | finumber | min_finumber |
|-------|---------|----------|----------|--------------|
|     1 |       1 |        1 |        1 |            1 |
|     1 |       2 |        1 |        5 |            1 |

您的主要查询：

SELECT soitem.fsono, fpartno, soitem.fcfromno, finumber
FROM soitem 
INNER JOIN somast on soitem.fsono = somast.fsono  
WHERE somast.fsono='1'  
ORDER by soitem.fsono, soitem.finumber

Results：

| fsono | fpartno | fcfromno | finumber |
|-------|---------|----------|----------|
|     1 |       1 |        1 |        1 |
|     1 |       2 |        1 |        5 |

你的子查询：

SELECT min(sq.finumber), sq.fcfromno 
FROM soitem sq 
WHERE sq.fsono='1' 
GROUP BY sq.fcfromno

Results：

|   | fcfromno |
|---|----------|
| 1 |        1 |

另一答案

我最终没有使用连接或子查询。通过将min(finumber)添加为min_fin到SELECTand ORDER BY，我得到了我需要的结果

select soitem.fsono, 
somast.fcustno, 
somast.fcontact, 
somast.fcustpono, 
somast.fshipvia, 
somast.forderdate, 
somast.fduedate,
 soship.fccompany, 
 soship.fcphone, 
REPLACE(REPLACE(CONVERT(VARCHAR(MAX), soship.fmstreet), CHAR(13), '|'), CHAR(10), ' ') AS Street,
soship.fccity,
 soship.fcstate, 
 soship.fczip,
CAST(somast.fackmemo as CHAR(35)) as ShipCode,
CASE WHEN soitem.fcfromtype <> 'IFPKIT' THEN soitem.fpartno ELSE soitem.fcfromno END AS Item, 
CASE WHEN soitem.fcfromtype <> 'IFPKIT' THEN soitem.fquantity ELSE soitem.fquantity / soitem.fquoteqty END AS Qty, 
CASE WHEN soitem.fcfromtype <> 'IFPKIT' 
THEN CAST(soitem.fdesc as CHAR(35))
ELSE 'Store Set (Phantom)' END as Descr,
somast.fordername,
  somast.fcusrchr2,
somast.fcusrchr3,
somast.fcusrchr1, 
somast.festimator, 
soitem.fcfromno, 
soitem.fcfromtype, 

**min(finumber)as min_fin** 

from soitem INNER JOIN
 somast ON soitem.fsono = somast.fsono
 LEFT OUTER JOIN
 soship ON somast.fsono = soship.fcsono AND soship.fcenumber = ''

  where soitem.fsono='034313' 

group by soitem.fsono, CASE WHEN soitem.fcfromtype <> 'IFPKIT' THEN soitem.fpartno ELSE soitem.fcfromno END, 
soitem.fcfromno, soitem.fcfromtype,
somast.fcustno, 
somast.fcontact, 
somast.fcustpono, 
somast.fshipvia, 
somast.forderdate, 
somast.fduedate,
 soship.fccompany, 
 soship.fcphone,
 REPLACE(REPLACE(CONVERT(VARCHAR(MAX), soship.fmstreet), CHAR(13), '|'), CHAR(10), ' '),
soship.fccity,
 soship.fcstate, 
 soship.fczip,
 CAST(somast.fackmemo as CHAR(35)),
 CASE WHEN soitem.fcfromtype <> 'IFPKIT' THEN soitem.fquantity ELSE soitem.fquantity / soitem.fquoteqty END , 
CASE WHEN soitem.fcfromtype <> 'IFPKIT' 
THEN CAST(soitem.fdesc as CHAR(35))
ELSE 'Store Set (Phantom)' END, 
 somast.fordername,
  somast.fcusrchr2,
somast.fcusrchr3,
somast.fcusrchr1, 
somast.festimator

order by soitem.fsono, **min_fin**;