在 DB2 中创建视图
CREATE VIEW IN DB2
我有一个 DB2 SQL 语句，它 select 成功地获取了所需的行。由于它是一个耗时的查询，我正在尝试使用 create view 语句将其转换为视图。
WITH firstequiprrn
AS (SELECT oeord# equiporder,
Min(RRN(a)) firstrow
FROM iesqafile.OPEQUIP a
GROUP BY oeord#
ORDER BY 1),
firstequiprow
AS (SELECT oeord#,
oetrlr equipmentnumber
FROM firstequiprrn
INNER JOIN iesqafile.OPEQUIP b
ON equiporder = oeord#
AND firstrow = RRN(b)),
ordermiles
AS (SELECT mmord#,
mmtotal
FROM iesqafile.mmiles
WHERE mmord# IN(SELECT orodr#
FROM iesqafile.order)
AND mmrectype = 'O'
AND mmdsp# = '00'),
stopgroup
AS (SELECT soord stoporder,
COUNT(*) stopsremain,
Min(sostp#) nextstop,
Max(soappr) apptreq,
Max(soaptm) apptmade
FROM iesqafile.stopoff
INNER JOIN iesqafile.order
ON orodr# = soord
WHERE soardt = 0
GROUP BY soord
ORDER BY 1) SELECT a.orodr# orodr_,
orcust,
orldat,
CASE orpdat
WHEN 0 THEN Varchar(0)
ELSE Varchar_format(CHAR(orpdat), 'YYYY-MM-DD')
END erdat2,
CASE orptim
WHEN 0 THEN Varchar(0)
ELSE CONCAT(CONCAT(SUBSTRING(orptim, 1, 2), ':'),
SUBSTRING(orptim, 3, 4))
END AS ertim2,
CASE orapdt
WHEN 0 THEN Varchar(0)
ELSE Varchar_format(CHAR(orapdt), 'YYYY-MM-DD')
END ltdat2,
CASE oraptm
WHEN 0 THEN Varchar(0)
ELSE CONCAT(CONCAT(SUBSTRING(oraptm, 1, 2), ':'),
SUBSTRING(oraptm, 3, 4))
END AS lttim2,
CASE orddat
WHEN 0 THEN Varchar(0)
ELSE Varchar_format(CHAR(orddat), 'YYYY-MM-DD')
END dldat2,
CASE ordtim
WHEN 0 THEN Varchar(0)
ELSE CONCAT(CONCAT(SUBSTRING(ordtim, 1, 2), ':'),
SUBSTRING(ordtim, 3, 4))
END AS dltim2,
orestr,
a.ordv# ordv_,
orcons,
oreqty,
orspec,
a.orstp# orstp_,
orcomc,
( CASE
WHEN mmtotal IS NOT NULL THEN mmtotal
ELSE 0
END ) mmtotal,
orwgt,
orocty,
orost,
ordcty,
ordst,
orara asarea,
orpdrv oprdrv,
orld# orld_,
ordsp# ordsp_,
orshdt,
orshtm,
ornwpk,
( CASE
WHEN equipmentnumber IS NOT NULL THEN equipmentnumber
ELSE ''
END ) EquipmentNumber,
( CASE
WHEN apptreq IS NOT NULL THEN apptreq
ELSE 'N'
END ) apptreq,
( CASE
WHEN apptmade IS NOT NULL THEN apptmade
ELSE 'N'
END ) apptmade,
( CASE
WHEN ununit IS NOT NULL THEN ununit
ELSE ' '
END ) UNUNIT,
( CASE
WHEN unsupr IS NOT NULL THEN unsupr
ELSE ' '
END ) asdrmgr,
( CASE
WHEN unfmgr IS NOT NULL THEN unfmgr
ELSE ' '
END ) asflmgr,
( CASE
WHEN untrl1 IS NOT NULL THEN untrl1
ELSE ' '
END ) UNTRL1
FROM iesqafile.order a
LEFT OUTER JOIN ordermiles
ON mmord# = a.orodr#
LEFT OUTER JOIN firstequiprow
ON a.orodr# = oeord#
LEFT OUTER JOIN stopgroup
ON a.orodr# = stoporder
LEFT OUTER JOIN iesqafile.units
ON ununit = a.orpdrv
WHERE orld# <> ordsp#
AND ( orspec = 'N# C'
OR orspec = 'N# P' )
AND orpdrv <> ''
AND orpdat >= 2018001
UNION
SELECT d.orodr# as ordddd,
orcust,
orldat,
CASE orpdat
WHEN 0 THEN Varchar(0)
ELSE Varchar_format(CHAR(orpdat), 'YYYY-MM-DD')
END erdat2,
CASE orptim
WHEN 0 THEN Varchar(0)
ELSE CONCAT(CONCAT(SUBSTRING(orptim, 1, 2), ':'),
SUBSTRING(orptim, 3, 4))
END AS ertim2,
CASE orapdt
WHEN 0 THEN Varchar(0)
ELSE Varchar_format(CHAR(orapdt), 'YYYY-MM-DD')
END ltdat2,
CASE oraptm
WHEN 0 THEN Varchar(0)
ELSE CONCAT(CONCAT(SUBSTRING(oraptm, 1, 2), ':'),
SUBSTRING(oraptm, 3, 4))
END AS lttim2,
CASE orddat
WHEN 0 THEN Varchar(0)
ELSE Varchar_format(CHAR(orddat), 'YYYY-MM-DD')
END dldat2,
CASE ordtim
WHEN 0 THEN Varchar(0)
ELSE CONCAT(CONCAT(SUBSTRING(ordtim, 1, 2), ':'),
SUBSTRING(ordtim, 3, 4))
END AS dltim2,
orestr,
ordv#,
orcons,
oreqty,
orspec,
orstp#,
orcomc,
( CASE
WHEN mmtotal IS NOT NULL THEN mmtotal
ELSE 0
END ) mmtotal,
orwgt,
orocty,
orost,
ordcty,
ordst,
orara,
orpdrv,
orld#,
ordsp#,
orshdt,
orshtm,
ornwpk,
( CASE
WHEN equipmentnumber IS NOT NULL THEN equipmentnumber
ELSE ' '
END ) EquipmentNumber,
( CASE
WHEN apptreq IS NOT NULL THEN apptreq
ELSE 'N'
END ) apptreq,
( CASE
WHEN apptmade IS NOT NULL THEN apptmade
ELSE 'N'
END ) apptmade,
( CASE
WHEN ununit IS NOT NULL THEN ununit
ELSE ' '
END ) UNUNIT,
( CASE
WHEN unsupr IS NOT NULL THEN unsupr
ELSE ' '
END ) UNSUPR,
( CASE
WHEN unfmgr IS NOT NULL THEN unfmgr
ELSE ' '
END ) UNFMGR,
( CASE
WHEN untrl1 IS NOT NULL THEN untrl1
ELSE ' '
END ) UNTRL1
FROM iesqafile.opplan
LEFT OUTER JOIN iesqafile.order d
ON d.orodr# = opord#
LEFT OUTER JOIN ordermiles
ON mmord# = d.orodr#
LEFT OUTER JOIN firstequiprow
ON d.orodr# = oeord#
LEFT OUTER JOIN stopgroup
ON d.orodr# = stoporder
LEFT OUTER JOIN iesqafile.units
ON ununit = d.orpdrv
所以我第一次尝试创建视图只是在第一条语句的开头添加一个 CREATE VIEW AS。这导致了以下错误：
A column list must be specified because the result columns are unnamed.
我无法理解这个错误，因为确实指定了列标题，因为 select 可以正常工作。所有列都显示有适当的标题。
但是我尝试通过添加以下内容而不是简单的创建视图来修改查询。
create view pavt.v1 (v1,v2,v3,v4,v5,v6,v7,v8,v9,v10,v11,v12,v13,v14,v15,v16,v17,v18,v19,v20,v21,v22,v23,v24,v25,v26,v27,v28,v29,v30,v31,v32,v33,v34,v35,v36) as
这似乎奏效了，视图是在库 PAVT 中创建的。但是，当我在视图上 运行 a select 时，我得到一个算术溢出错误，DB2 错误代码为 -802。
我不明白这一点，因为我能够查看结果，但问题仅在尝试创建查询时出现。有人可以指导吗？
更详细的错误描述如下：
Message . . . . : Select or omit error on field
Cast(Translate(ORDER_14.ORPTIM, *UNNAMED Table) AS member V.
Cause . . . . . : A select or omit error occurred in record 0, record format
*FIRST, member number 1 of file V in library PAVT, because of condition 1 of
the following conditions:
1 - The data was not valid in a decimal field.
此刻我真正想知道的是我创建视图所遵循的方法是否正确（至少就语法而言）。也许我看到的错误是数据错误？
编辑-1:
create view pavt.CCC1 as
WITH firstequiprrn
AS (SELECT oeord# equiporder,
Min(RRN(a)) firstrow
FROM iesqafile.OPEQUIP a
GROUP BY oeord#
ORDER BY 1),
firstequiprow
AS (SELECT oeord#,
oetrlr equipmentnumber
FROM firstequiprrn
INNER JOIN iesqafile.OPEQUIP b
ON equiporder = oeord#
AND firstrow = RRN(b)),
ordermiles
AS (SELECT mmord#,
mmtotal
FROM iesqafile.mmiles
WHERE mmord# IN(SELECT orodr#
FROM iesqafile.order)
AND mmrectype = 'O'
AND mmdsp# = '00'),
stopgroup
AS (SELECT soord stoporder,
COUNT(*) stopsremain,
Min(sostp#) nextstop,
Max(soappr) apptreq,
Max(soaptm) apptmade
FROM iesqafile.stopoff
INNER JOIN iesqafile.order
ON orodr# = soord
WHERE soardt = 0
GROUP BY soord
ORDER BY 1) SELECT a.orodr# orodr_,
orcust,
orldat,
CASE orpdat
WHEN 0 THEN Varchar(0)
ELSE Varchar_format(CHAR(orpdat), 'YYYY-MM-DD')
END erdat2,
CASE orptim
WHEN 0 THEN Varchar(0)
ELSE CONCAT(CONCAT(SUBSTRING(char(orptim), 1, 2), ':'),
SUBSTRING(char(orptim), 3, 4))
END AS ertim2,
CASE orapdt
WHEN 0 THEN Varchar(0)
ELSE Varchar_format(CHAR(orapdt), 'YYYY-MM-DD')
END ltdat2,
CASE oraptm
WHEN 0 THEN Varchar(0)
ELSE CONCAT(CONCAT(SUBSTRING(oraptm, 1, 2), ':'),
SUBSTRING(oraptm, 3, 4))
END AS lttim2,
CASE orddat
WHEN 0 THEN Varchar(0)
ELSE Varchar_format(CHAR(orddat), 'YYYY-MM-DD')
END dldat2,
CASE ordtim
WHEN 0 THEN Varchar(0)
ELSE CONCAT(CONCAT(SUBSTRING(ordtim, 1, 2), ':'),
SUBSTRING(ordtim, 3, 4))
END AS dltim2,
orestr,
a.ordv# ordv_,
orcons,
oreqty,
orspec,
a.orstp# orstp_,
orcomc,
( CASE
WHEN mmtotal IS NOT NULL THEN mmtotal
ELSE 0
END ) mmtotal,
orwgt,
orocty,
orost,
ordcty,
ordst,
orara asarea,
orpdrv oprdrv,
orld# orld_,
ordsp# ordsp_,
orshdt,
orshtm,
ornwpk,
( CASE
WHEN equipmentnumber IS NOT NULL THEN equipmentnumber
ELSE ''
END ) EquipmentNumber,
( CASE
WHEN apptreq IS NOT NULL THEN apptreq
ELSE 'N'
END ) apptreq,
( CASE
WHEN apptmade IS NOT NULL THEN apptmade
ELSE 'N'
END ) apptmade,
( CASE
WHEN ununit IS NOT NULL THEN ununit
ELSE ' '
END ) UNUNIT,
( CASE
WHEN unsupr IS NOT NULL THEN unsupr
ELSE ' '
END ) asdrmgr,
( CASE
WHEN unfmgr IS NOT NULL THEN unfmgr
ELSE ' '
END ) asflmgr,
( CASE
WHEN untrl1 IS NOT NULL THEN untrl1
ELSE ' '
END ) UNTRL1
FROM iesqafile.order a
LEFT OUTER JOIN ordermiles
ON mmord# = a.orodr#
LEFT OUTER JOIN firstequiprow
ON a.orodr# = oeord#
LEFT OUTER JOIN stopgroup
ON a.orodr# = stoporder
LEFT OUTER JOIN iesqafile.units
ON ununit = a.orpdrv
WHERE orld# <> ordsp#
AND ( orspec = 'N# C'
OR orspec = 'N# P' )
AND orpdrv <> ''
AND orpdat >= 2018001
UNION
SELECT d.orodr# orodr_,
orcust,
orldat,
CASE orpdat
WHEN 0 THEN Varchar(0)
ELSE Varchar_format(CHAR(orpdat), 'YYYY-MM-DD')
END erdat2,
CASE orptim
WHEN 0 THEN Varchar(0)
ELSE CONCAT(CONCAT(SUBSTRING(char(orptim), 1, 2), ':'),
SUBSTRING(char(orptim), 3, 4))
END AS ertim2,
CASE orapdt
WHEN 0 THEN Varchar(0)
ELSE Varchar_format(CHAR(orapdt), 'YYYY-MM-DD')
END ltdat2,
CASE oraptm
WHEN 0 THEN Varchar(0)
ELSE CONCAT(CONCAT(SUBSTRING(oraptm, 1, 2), ':'),
SUBSTRING(oraptm, 3, 4))
END AS lttim2,
CASE orddat
WHEN 0 THEN Varchar(0)
ELSE Varchar_format(CHAR(orddat), 'YYYY-MM-DD')
END dldat2,
CASE ordtim
WHEN 0 THEN Varchar(0)
ELSE CONCAT(CONCAT(SUBSTRING(ordtim, 1, 2), ':'),
SUBSTRING(ordtim, 3, 4))
END AS dltim2,
orestr,
ordv# ordv_,
orcons,
oreqty,
orspec,
orstp# orstp_,
orcomc,
( CASE
WHEN mmtotal IS NOT NULL THEN mmtotal
ELSE 0
END ) mmtotal,
orwgt,
orocty,
orost,
ordcty,
ordst,
orara asarea,
orpdrv oprdrv,
orld# orld_,
ordsp# ordsp_,
orshdt,
orshtm,
ornwpk,
( CASE
WHEN equipmentnumber IS NOT NULL THEN equipmentnumber
ELSE ' '
END ) EquipmentNumber,
( CASE
WHEN apptreq IS NOT NULL THEN apptreq
ELSE 'N'
END ) apptreq,
( CASE
WHEN apptmade IS NOT NULL THEN apptmade
ELSE 'N'
END ) apptmade,
( CASE
WHEN ununit IS NOT NULL THEN ununit
ELSE ' '
END ) UNUNIT,
( CASE
WHEN unsupr IS NOT NULL THEN unsupr
ELSE ' '
END ) asdrmgr,
( CASE
WHEN unfmgr IS NOT NULL THEN unfmgr
ELSE ' '
END ) asflmgr,
( CASE
WHEN untrl1 IS NOT NULL THEN untrl1
ELSE ' '
END ) UNTRL1
FROM iesqafile.opplan
LEFT OUTER JOIN iesqafile.order d
ON d.orodr# = opord#
LEFT OUTER JOIN ordermiles
ON mmord# = d.orodr#
LEFT OUTER JOIN firstequiprow
ON d.orodr# = oeord#
LEFT OUTER JOIN stopgroup
ON d.orodr# = stoporder
LEFT OUTER JOIN iesqafile.units
ON ununit = d.orpdrv
第一个错误是因为在您的 2 个主要 SELECT 语句（联合在一起）中您有不同的列名 - 因此视图不知道如何称呼它们并且需要您明确命名它们例如每条语句的第一列：
SELECT a.orodr# orodr_ ...
SELECT d.orodr# as ordddd ...
对于第二个错误，ORPTIM 列的数据类型是什么？
我猜是这种结构导致了问题：
CASE orptim
WHEN 0
THEN Varchar(0)
ELSE CONCAT(CONCAT(SUBSTRING(orptim, 1, 2), ':'), SUBSTRING(orptim, 3, 4))
如果 orptim 是 number/decimal，则“WHEN 0”将起作用，但“SUBSTRING(orptim, 1, 2)”将不起作用 - 因为您不能对数字进行子字符串化。如果 orptim 是一个字符串，那么 "WHEN 0" w= 可能会导致问题。
我有一个 DB2 SQL 语句，它 select 成功地获取了所需的行。由于它是一个耗时的查询，我正在尝试使用 create view 语句将其转换为视图。
WITH firstequiprrn
AS (SELECT oeord# equiporder,
Min(RRN(a)) firstrow
FROM iesqafile.OPEQUIP a
GROUP BY oeord#
ORDER BY 1),
firstequiprow
AS (SELECT oeord#,
oetrlr equipmentnumber
FROM firstequiprrn
INNER JOIN iesqafile.OPEQUIP b
ON equiporder = oeord#
AND firstrow = RRN(b)),
ordermiles
AS (SELECT mmord#,
mmtotal
FROM iesqafile.mmiles
WHERE mmord# IN(SELECT orodr#
FROM iesqafile.order)
AND mmrectype = 'O'
AND mmdsp# = '00'),
stopgroup
AS (SELECT soord stoporder,
COUNT(*) stopsremain,
Min(sostp#) nextstop,
Max(soappr) apptreq,
Max(soaptm) apptmade
FROM iesqafile.stopoff
INNER JOIN iesqafile.order
ON orodr# = soord
WHERE soardt = 0
GROUP BY soord
ORDER BY 1) SELECT a.orodr# orodr_,
orcust,
orldat,
CASE orpdat
WHEN 0 THEN Varchar(0)
ELSE Varchar_format(CHAR(orpdat), 'YYYY-MM-DD')
END erdat2,
CASE orptim
WHEN 0 THEN Varchar(0)
ELSE CONCAT(CONCAT(SUBSTRING(orptim, 1, 2), ':'),
SUBSTRING(orptim, 3, 4))
END AS ertim2,
CASE orapdt
WHEN 0 THEN Varchar(0)
ELSE Varchar_format(CHAR(orapdt), 'YYYY-MM-DD')
END ltdat2,
CASE oraptm
WHEN 0 THEN Varchar(0)
ELSE CONCAT(CONCAT(SUBSTRING(oraptm, 1, 2), ':'),
SUBSTRING(oraptm, 3, 4))
END AS lttim2,
CASE orddat
WHEN 0 THEN Varchar(0)
ELSE Varchar_format(CHAR(orddat), 'YYYY-MM-DD')
END dldat2,
CASE ordtim
WHEN 0 THEN Varchar(0)
ELSE CONCAT(CONCAT(SUBSTRING(ordtim, 1, 2), ':'),
SUBSTRING(ordtim, 3, 4))
END AS dltim2,
orestr,
a.ordv# ordv_,
orcons,
oreqty,
orspec,
a.orstp# orstp_,
orcomc,
( CASE
WHEN mmtotal IS NOT NULL THEN mmtotal
ELSE 0
END ) mmtotal,
orwgt,
orocty,
orost,
ordcty,
ordst,
orara asarea,
orpdrv oprdrv,
orld# orld_,
ordsp# ordsp_,
orshdt,
orshtm,
ornwpk,
( CASE
WHEN equipmentnumber IS NOT NULL THEN equipmentnumber
ELSE ''
END ) EquipmentNumber,
( CASE
WHEN apptreq IS NOT NULL THEN apptreq
ELSE 'N'
END ) apptreq,
( CASE
WHEN apptmade IS NOT NULL THEN apptmade
ELSE 'N'
END ) apptmade,
( CASE
WHEN ununit IS NOT NULL THEN ununit
ELSE ' '
END ) UNUNIT,
( CASE
WHEN unsupr IS NOT NULL THEN unsupr
ELSE ' '
END ) asdrmgr,
( CASE
WHEN unfmgr IS NOT NULL THEN unfmgr
ELSE ' '
END ) asflmgr,
( CASE
WHEN untrl1 IS NOT NULL THEN untrl1
ELSE ' '
END ) UNTRL1
FROM iesqafile.order a
LEFT OUTER JOIN ordermiles
ON mmord# = a.orodr#
LEFT OUTER JOIN firstequiprow
ON a.orodr# = oeord#
LEFT OUTER JOIN stopgroup
ON a.orodr# = stoporder
LEFT OUTER JOIN iesqafile.units
ON ununit = a.orpdrv
WHERE orld# <> ordsp#
AND ( orspec = 'N# C'
OR orspec = 'N# P' )
AND orpdrv <> ''
AND orpdat >= 2018001
UNION
SELECT d.orodr# as ordddd,
orcust,
orldat,
CASE orpdat
WHEN 0 THEN Varchar(0)
ELSE Varchar_format(CHAR(orpdat), 'YYYY-MM-DD')
END erdat2,
CASE orptim
WHEN 0 THEN Varchar(0)
ELSE CONCAT(CONCAT(SUBSTRING(orptim, 1, 2), ':'),
SUBSTRING(orptim, 3, 4))
END AS ertim2,
CASE orapdt
WHEN 0 THEN Varchar(0)
ELSE Varchar_format(CHAR(orapdt), 'YYYY-MM-DD')
END ltdat2,
CASE oraptm
WHEN 0 THEN Varchar(0)
ELSE CONCAT(CONCAT(SUBSTRING(oraptm, 1, 2), ':'),
SUBSTRING(oraptm, 3, 4))
END AS lttim2,
CASE orddat
WHEN 0 THEN Varchar(0)
ELSE Varchar_format(CHAR(orddat), 'YYYY-MM-DD')
END dldat2,
CASE ordtim
WHEN 0 THEN Varchar(0)
ELSE CONCAT(CONCAT(SUBSTRING(ordtim, 1, 2), ':'),
SUBSTRING(ordtim, 3, 4))
END AS dltim2,
orestr,
ordv#,
orcons,
oreqty,
orspec,
orstp#,
orcomc,
( CASE
WHEN mmtotal IS NOT NULL THEN mmtotal
ELSE 0
END ) mmtotal,
orwgt,
orocty,
orost,
ordcty,
ordst,
orara,
orpdrv,
orld#,
ordsp#,
orshdt,
orshtm,
ornwpk,
( CASE
WHEN equipmentnumber IS NOT NULL THEN equipmentnumber
ELSE ' '
END ) EquipmentNumber,
( CASE
WHEN apptreq IS NOT NULL THEN apptreq
ELSE 'N'
END ) apptreq,
( CASE
WHEN apptmade IS NOT NULL THEN apptmade
ELSE 'N'
END ) apptmade,
( CASE
WHEN ununit IS NOT NULL THEN ununit
ELSE ' '
END ) UNUNIT,
( CASE
WHEN unsupr IS NOT NULL THEN unsupr
ELSE ' '
END ) UNSUPR,
( CASE
WHEN unfmgr IS NOT NULL THEN unfmgr
ELSE ' '
END ) UNFMGR,
( CASE
WHEN untrl1 IS NOT NULL THEN untrl1
ELSE ' '
END ) UNTRL1
FROM iesqafile.opplan
LEFT OUTER JOIN iesqafile.order d
ON d.orodr# = opord#
LEFT OUTER JOIN ordermiles
ON mmord# = d.orodr#
LEFT OUTER JOIN firstequiprow
ON d.orodr# = oeord#
LEFT OUTER JOIN stopgroup
ON d.orodr# = stoporder
LEFT OUTER JOIN iesqafile.units
ON ununit = d.orpdrv
所以我第一次尝试创建视图只是在第一条语句的开头添加一个 CREATE VIEW AS。这导致了以下错误：
A column list must be specified because the result columns are unnamed.
我无法理解这个错误，因为确实指定了列标题，因为 select 可以正常工作。所有列都显示有适当的标题。
但是我尝试通过添加以下内容而不是简单的创建视图来修改查询。
create view pavt.v1 (v1,v2,v3,v4,v5,v6,v7,v8,v9,v10,v11,v12,v13,v14,v15,v16,v17,v18,v19,v20,v21,v22,v23,v24,v25,v26,v27,v28,v29,v30,v31,v32,v33,v34,v35,v36) as
这似乎奏效了，视图是在库 PAVT 中创建的。但是，当我在视图上 运行 a select 时，我得到一个算术溢出错误，DB2 错误代码为 -802。
我不明白这一点，因为我能够查看结果，但问题仅在尝试创建查询时出现。有人可以指导吗？
更详细的错误描述如下：
Message . . . . : Select or omit error on field
Cast(Translate(ORDER_14.ORPTIM, *UNNAMED Table) AS member V.
Cause . . . . . : A select or omit error occurred in record 0, record format
*FIRST, member number 1 of file V in library PAVT, because of condition 1 of
the following conditions:
1 - The data was not valid in a decimal field.
此刻我真正想知道的是我创建视图所遵循的方法是否正确（至少就语法而言）。也许我看到的错误是数据错误？
编辑-1:
create view pavt.CCC1 as
WITH firstequiprrn
AS (SELECT oeord# equiporder,
Min(RRN(a)) firstrow
FROM iesqafile.OPEQUIP a
GROUP BY oeord#
ORDER BY 1),
firstequiprow
AS (SELECT oeord#,
oetrlr equipmentnumber
FROM firstequiprrn
INNER JOIN iesqafile.OPEQUIP b
ON equiporder = oeord#
AND firstrow = RRN(b)),
ordermiles
AS (SELECT mmord#,
mmtotal
FROM iesqafile.mmiles
WHERE mmord# IN(SELECT orodr#
FROM iesqafile.order)
AND mmrectype = 'O'
AND mmdsp# = '00'),
stopgroup
AS (SELECT soord stoporder,
COUNT(*) stopsremain,
Min(sostp#) nextstop,
Max(soappr) apptreq,
Max(soaptm) apptmade
FROM iesqafile.stopoff
INNER JOIN iesqafile.order
ON orodr# = soord
WHERE soardt = 0
GROUP BY soord
ORDER BY 1) SELECT a.orodr# orodr_,
orcust,
orldat,
CASE orpdat
WHEN 0 THEN Varchar(0)
ELSE Varchar_format(CHAR(orpdat), 'YYYY-MM-DD')
END erdat2,
CASE orptim
WHEN 0 THEN Varchar(0)
ELSE CONCAT(CONCAT(SUBSTRING(char(orptim), 1, 2), ':'),
SUBSTRING(char(orptim), 3, 4))
END AS ertim2,
CASE orapdt
WHEN 0 THEN Varchar(0)
ELSE Varchar_format(CHAR(orapdt), 'YYYY-MM-DD')
END ltdat2,
CASE oraptm
WHEN 0 THEN Varchar(0)
ELSE CONCAT(CONCAT(SUBSTRING(oraptm, 1, 2), ':'),
SUBSTRING(oraptm, 3, 4))
END AS lttim2,
CASE orddat
WHEN 0 THEN Varchar(0)
ELSE Varchar_format(CHAR(orddat), 'YYYY-MM-DD')
END dldat2,
CASE ordtim
WHEN 0 THEN Varchar(0)
ELSE CONCAT(CONCAT(SUBSTRING(ordtim, 1, 2), ':'),
SUBSTRING(ordtim, 3, 4))
END AS dltim2,
orestr,
a.ordv# ordv_,
orcons,
oreqty,
orspec,
a.orstp# orstp_,
orcomc,
( CASE
WHEN mmtotal IS NOT NULL THEN mmtotal
ELSE 0
END ) mmtotal,
orwgt,
orocty,
orost,
ordcty,
ordst,
orara asarea,
orpdrv oprdrv,
orld# orld_,
ordsp# ordsp_,
orshdt,
orshtm,
ornwpk,
( CASE
WHEN equipmentnumber IS NOT NULL THEN equipmentnumber
ELSE ''
END ) EquipmentNumber,
( CASE
WHEN apptreq IS NOT NULL THEN apptreq
ELSE 'N'
END ) apptreq,
( CASE
WHEN apptmade IS NOT NULL THEN apptmade
ELSE 'N'
END ) apptmade,
( CASE
WHEN ununit IS NOT NULL THEN ununit
ELSE ' '
END ) UNUNIT,
( CASE
WHEN unsupr IS NOT NULL THEN unsupr
ELSE ' '
END ) asdrmgr,
( CASE
WHEN unfmgr IS NOT NULL THEN unfmgr
ELSE ' '
END ) asflmgr,
( CASE
WHEN untrl1 IS NOT NULL THEN untrl1
ELSE ' '
END ) UNTRL1
FROM iesqafile.order a
LEFT OUTER JOIN ordermiles
ON mmord# = a.orodr#
LEFT OUTER JOIN firstequiprow
ON a.orodr# = oeord#
LEFT OUTER JOIN stopgroup
ON a.orodr# = stoporder
LEFT OUTER JOIN iesqafile.units
ON ununit = a.orpdrv
WHERE orld# <> ordsp#
AND ( orspec = 'N# C'
OR orspec = 'N# P' )
AND orpdrv <> ''
AND orpdat >= 2018001
UNION
SELECT d.orodr# orodr_,
orcust,
orldat,
CASE orpdat
WHEN 0 THEN Varchar(0)
ELSE Varchar_format(CHAR(orpdat), 'YYYY-MM-DD')
END erdat2,
CASE orptim
WHEN 0 THEN Varchar(0)
ELSE CONCAT(CONCAT(SUBSTRING(char(orptim), 1, 2), ':'),
SUBSTRING(char(orptim), 3, 4))
END AS ertim2,
CASE orapdt
WHEN 0 THEN Varchar(0)
ELSE Varchar_format(CHAR(orapdt), 'YYYY-MM-DD')
END ltdat2,
CASE oraptm
WHEN 0 THEN Varchar(0)
ELSE CONCAT(CONCAT(SUBSTRING(oraptm, 1, 2), ':'),
SUBSTRING(oraptm, 3, 4))
END AS lttim2,
CASE orddat
WHEN 0 THEN Varchar(0)
ELSE Varchar_format(CHAR(orddat), 'YYYY-MM-DD')
END dldat2,
CASE ordtim
WHEN 0 THEN Varchar(0)
ELSE CONCAT(CONCAT(SUBSTRING(ordtim, 1, 2), ':'),
SUBSTRING(ordtim, 3, 4))
END AS dltim2,
orestr,
ordv# ordv_,
orcons,
oreqty,
orspec,
orstp# orstp_,
orcomc,
( CASE
WHEN mmtotal IS NOT NULL THEN mmtotal
ELSE 0
END ) mmtotal,
orwgt,
orocty,
orost,
ordcty,
ordst,
orara asarea,
orpdrv oprdrv,
orld# orld_,
ordsp# ordsp_,
orshdt,
orshtm,
ornwpk,
( CASE
WHEN equipmentnumber IS NOT NULL THEN equipmentnumber
ELSE ' '
END ) EquipmentNumber,
( CASE
WHEN apptreq IS NOT NULL THEN apptreq
ELSE 'N'
END ) apptreq,
( CASE
WHEN apptmade IS NOT NULL THEN apptmade
ELSE 'N'
END ) apptmade,
( CASE
WHEN ununit IS NOT NULL THEN ununit
ELSE ' '
END ) UNUNIT,
( CASE
WHEN unsupr IS NOT NULL THEN unsupr
ELSE ' '
END ) asdrmgr,
( CASE
WHEN unfmgr IS NOT NULL THEN unfmgr
ELSE ' '
END ) asflmgr,
( CASE
WHEN untrl1 IS NOT NULL THEN untrl1
ELSE ' '
END ) UNTRL1
FROM iesqafile.opplan
LEFT OUTER JOIN iesqafile.order d
ON d.orodr# = opord#
LEFT OUTER JOIN ordermiles
ON mmord# = d.orodr#
LEFT OUTER JOIN firstequiprow
ON d.orodr# = oeord#
LEFT OUTER JOIN stopgroup
ON d.orodr# = stoporder
LEFT OUTER JOIN iesqafile.units
ON ununit = d.orpdrv
第一个错误是因为在您的 2 个主要 SELECT 语句（联合在一起）中您有不同的列名 - 因此视图不知道如何称呼它们并且需要您明确命名它们例如每条语句的第一列：
SELECT a.orodr# orodr_ ...
SELECT d.orodr# as ordddd ...
对于第二个错误，ORPTIM 列的数据类型是什么？
我猜是这种结构导致了问题：
CASE orptim
WHEN 0
THEN Varchar(0)
ELSE CONCAT(CONCAT(SUBSTRING(orptim, 1, 2), ':'), SUBSTRING(orptim, 3, 4))
如果 orptim 是 number/decimal，则“WHEN 0”将起作用，但“SUBSTRING(orptim, 1, 2)”将不起作用 - 因为您不能对数字进行子字符串化。如果 orptim 是一个字符串，那么 "WHEN 0" w= 可能会导致问题。