DB2 使用通用 table 表达式创建视图

Question

嘿，我从 AS400 上的 DB2 导出了一个视图定义，并想将其导入 DB2 LUW express-c，但是每当我尝试使用 WITH 子句时，我总是遇到语法错误：

DB2 SQL Error: SQLCODE=-104, SQLSTATE=42601, SQLERRMC=AS;MAATNUMMER, AANTAL) ;JOIN, DRIVER=4.19.77

如果我在 AS400 上的 DB2 中执行查询，它可以工作，并且根据 IBM 的文档，express-c 应该支持常见的 table 表达式。

如果有人能看一看并指出正确的方向

CREATE VIEW VIEWRTSGEPLAND (
    LOCATIE3,
    LOCATIE4,
    DISKNR,
    MAAT,
    MAATNUM,
    SKU,
    AANTAL,
    SOORT,
    BRON,
    DATUM,
    VOLGNR,
    STATUS,
    GEBRUIKER,
    PROGRAMMA,
    KBNUMMER,
    STATUSKB,
    "TIMESTAMP")
  AS(
      WITH 
        SEL1TF (TFLKNA, TFDSNR, TFMBKD, MAATNUMMER, AANTAL) AS (
        -- selectie op TF +  cross join NOS002 om 1 row per maat te bekomen
        SELECT TF.TFLKNA, TF.TFDSNR, TF.TFMBKD, NOS002.MAATNUMMER,
               SUM(TF.TFTA01 * NOS002.M01 + TF.TFTA02 * NOS002.M02 + 
                   TF.TFTA03 * NOS002.M03 + TF.TFTA04 * NOS002.M04 +
                   TF.TFTA05 * NOS002.M05 + TF.TFTA06 * NOS002.M06 +
                   TF.TFTA07 * NOS002.M07 + TF.TFTA08 * NOS002.M08 +
                   TF.TFTA09 * NOS002.M09 + TF.TFTA10 * NOS002.M10 + 
                   TF.TFTA11 * NOS002.M11 + TF.TFTA12 * NOS002.M12 +
                   TF.TFTA13 * NOS002.M13 + TF.TFTA14 * NOS002.M14 + 
                   TF.TFTA15 * NOS002.M15 + TF.TFTA16 * NOS002.M16) AS AANTAL
            FROM LFILES.TF TF
            CROSS JOIN AJR.NOS002 NOS002
            -- geen where, ook niet op de winkel 37 - 28
            GROUP BY TF.TFLKNA, TF.TFDSNR, TF.TFMBKD, NOS002.MAATNUMMER
        ), 
        SELTF (TFLKNA, TFDSNR, TFMBKD, MAATNUMMER, AANTAL) AS (
        -- eliminatie van de groepen die 0 zijn nu pas voor de leesbaarheid +
        -- geen 2x schrijven van de berekening
        SELECT SEL1TF.TFLKNA, SEL1TF.TFDSNR, SEL1TF.TFMBKD,
               SEL1TF.MAATNUMMER, SEL1TF.AANTAL
            FROM SEL1TF SEL1TF
            WHERE SEL1TF.AANTAL <> 0
        )
    -- main select
    SELECT E5XT.E5XTLKNR AS LOCATIE3, 
           E5XT.E5XTLKKD AS LOCATIE4, 
           SELTF.TFDSNR AS DISKNR, 
           NOS001.MAATOMSCHR AS MAAT, 
           NOS001.MAATNUM AS MAATNUM, 
           CAST((DIGITS(SELTF.TFDSNR) CONCAT '.' CONCAT DIGITS(NOS001.MAATNUM)) AS CHAR(11)) AS SKU, 
           CAST(SELTF.AANTAL AS DEC(6, 0)) AS AANTAL, 
           CAST('GEPLAND IN' AS CHAR(20)) AS SOORT, 
           CAST('power.LFILES.TF' AS CHAR(30)) AS BRON, 
           CURRENT_DATE AS DATUM, 
           CAST(0 AS DEC(9, 0)) AS VOLGNR, 
           CAST(SPACE(1) AS CHAR(1)) AS STATUS, 
           CAST(SPACE(10) AS CHAR(10)) AS GEBRUIKER, 
           CAST(SPACE(10) AS CHAR(10)) AS PROGRAMMA, 
           CAST(0 AS DEC(9, 0)) AS KBNUMMER, 
           CAST(SPACE(2) AS CHAR(2)) AS STATUSKB, 
           CURRENT_TIMESTAMP AS TIMESTAMP
      FROM SELTF SELTF
        INNER JOIN LFILES.E5XT E5XT
          ON SELTF.TFLKNA = E5XT.E5XTLKNR
        INNER JOIN AJR.NOS001 NOS001
          ON SELTF.TFMBKD = NOS001.MSMBKD
          AND SELTF.MAATNUMMER = NOS001.MAATNUMMER
);

Answer 1

去掉第一个AS后面多余的括号即可。 IE。这在 DataStudio 中解析得很好，所以如果我有 table DDL，我相信它会创建 OK。

CREATE VIEW VIEWRTSGEPLAND (
    LOCATIE3,
    LOCATIE4,
    DISKNR,
    MAAT,
    MAATNUM,
    SKU,
    AANTAL,
    SOORT,
    BRON,
    DATUM,
    VOLGNR,
    STATUS,
    GEBRUIKER,
    PROGRAMMA,
    KBNUMMER,
    STATUSKB,
    "TIMESTAMP")
  AS
    --(   <<<<< REMOVE THIS BRACKET 
WITH SEL1TF (TFLKNA, TFDSNR, TFMBKD, MAATNUMMER, AANTAL)
        AS (
            -- selectie op TF +  cross join NOS002 om 1 row per maat te bekomen
            SELECT TF.TFLKNA, TF.TFDSNR, TF.TFMBKD, NOS002.MAATNUMMER, SUM(TF.TFTA01 * NOS002.M01 + TF.TFTA02 * NOS002.M02 + TF.TFTA03 * NOS002.M03
            + TF.TFTA04 * NOS002.M04 + TF.TFTA05 * NOS002.M05 + TF.TFTA06 * NOS002.M06
            + TF.TFTA07 * NOS002.M07 + TF.TFTA08 * NOS002.M08 + TF.TFTA09 * NOS002.M09
            + TF.TFTA10 * NOS002.M10 + TF.TFTA11 * NOS002.M11 + TF.TFTA12 * NOS002.M12
            + TF.TFTA13 * NOS002.M13 + TF.TFTA14 * NOS002.M14 + TF.TFTA15 * NOS002.M15
            + TF.TFTA16 * NOS002.M16) AS AANTAL
                FROM LFILES.TF TF
                CROSS JOIN AJR.NOS002 NOS002
                -- geen where, ook niet op de winkel 37 - 28
                GROUP BY TF.TFLKNA, TF.TFDSNR, TF.TFMBKD, NOS002.MAATNUMMER
            ), 
        SELTF (TFLKNA, TFDSNR, TFMBKD, MAATNUMMER, AANTAL)
          AS (
            -- eliminatie van de groepen die 0 zijn nu pas voor de leesbaarheid +
            -- geen 2x schrijven van de berekening
            SELECT SEL1TF.TFLKNA, SEL1TF.TFDSNR, SEL1TF.TFMBKD, SEL1TF.MAATNUMMER, SEL1TF.AANTAL
            FROM SEL1TF SEL1TF
            WHERE SEL1TF.AANTAL <> 0
          )
        -- main select
        SELECT
        E5XT.E5XTLKNR AS LOCATIE3, E5XT.E5XTLKKD AS LOCATIE4, SELTF.TFDSNR AS DISKNR, NOS001.MAATOMSCHR AS MAAT, NOS001.MAATNUM AS MAATNUM, CAST((DIGITS(SELTF.TFDSNR) CONCAT '.' CONCAT DIGITS(NOS001.MAATNUM))
        AS CHAR(11)) AS SKU, CAST(SELTF.AANTAL AS DEC(6, 0)) AS AANTAL, CAST('GEPLAND IN' AS CHAR(20)) AS SOORT, CAST('power.LFILES.TF' AS CHAR(30)) AS BRON, CURRENT_DATE AS DATUM, CAST(0 AS DEC(9, 0)) AS VOLGNR, CAST(SPACE(1) AS CHAR(1)) AS STATUS, CAST(SPACE(10) AS CHAR(10)) AS GEBRUIKER, CAST(SPACE(10) AS CHAR(10)) AS PROGRAMMA, CAST(0 AS DEC(9, 0)) AS KBNUMMER, CAST(SPACE(2) AS CHAR(2)) AS STATUSKB, CURRENT_TIMESTAMP AS TIMESTAMP
        FROM SELTF SELTF
        INNER JOIN LFILES.E5XT E5XT
        ON SELTF.TFLKNA = E5XT.E5XTLKNR
        INNER JOIN AJR.NOS001 NOS001
        ON SELTF.TFMBKD = NOS001.MSMBKD
        AND SELTF.MAATNUMMER = NOS001.MAATNUMMER
--)  <<<<< REMOVE THIS BRACKET
;

DB2 使用通用 table 表达式创建视图

DB2 create view with common table expression

db2

ibm-midrange

db2-400

db2-luw