sql - RODBC 查询不返回数据

Question

我完全不知道为什么在针对 Oracle 数据仓库编写查询时无法返回有效数据。

我以前在这里看到过帖子，以及这个解决方案，但都没有解决我的问题。

一些背景：

我每天都连接到 Oracle 数据仓库，通常将数据拉入 R 没有任何问题
当我列出架构中的表时，Table_Type 被列为“TABLE”
我可以使用 SPSS 毫无问题地查询数据库中的表。我正在尽我所能从我的工作流程中删除 SPSS。

我的代码尝试使用上面找到的解决方案：

ch <- odbcConnect(DSN, USER, PWD)
tmp <- sqlQuery(ch, "SELECT * from MV_BRM_COMMUNICATION_DM", rows_at_time=1)

这是返回的内容（不正确的列名从第 9 列开始）：

> tmp
 [1] COMM_ITEM_PK            COMM_ERROR_PK           COMM_ADDRESS_PRLO_PK   
 [4] COMM_ADDRESS_LOPR_PK    COMM_ADDRESS_PR_PK      COMM_OUTBOUNDMESSAGE_ID
 [7] COMM_PIDM               COMM_CREATED_BY         ?                      
[10] ?.1                     ?.2                     ?.3                    
[13] ?.4                     ?.5                     ?.6                    
[16] ?.7                     ?.8                     ?.9                    
[19] ?.10                    ?.11                    ?.12                   
[22] ?.13                    ?.14                    ?.15                   
[25] ?.16                    ?.17                    ?.18                   
[28] ?.19                    ?.20                    ?.21                   
[31] ?.22                    ?.23                    ?.24                   
[34] ?.25                    ?.26                    ?.27                   
[37] ?.28                    ?.29                    ?.30                   
[40] ?.31                    ?.32                    ?.33                   
[43] ?.34                    ?.35                   
<0 rows> (or 0-length row.names)

这是我的连接信息：

> odbcGetInfo(ch)
       DBMS_Name         DBMS_Ver  Driver_ODBC_Ver Data_Source_Name      Driver_Name 
        "Oracle"     "11.01.0070"          "03.51"           "MYDSN"    "SQORA32.DLL" 
      Driver_Ver         ODBC_Ver      Server_Name 
    "09.02.0000"     "03.80.0000"       "myserver "

最后，我的会话信息：

> sessionInfo()
R version 2.15.0 (2012-03-30)
Platform: i386-pc-mingw32/i386 (32-bit)

locale:
[1] LC_COLLATE=English_United States.1252  LC_CTYPE=English_United States.1252   
[3] LC_MONETARY=English_United States.1252 LC_NUMERIC=C                          
[5] LC_TIME=English_United States.1252    

attached base packages:
[1] stats     graphics  grDevices utils     datasets  methods   base     

other attached packages:
[1] RODBC_1.3-5

loaded via a namespace (and not attached):
[1] tools_2.15.0

我真的很想继续使用 RODBC 包。我知道有很多抱怨，但基本上，我所需要的只是偶尔将数据上传回数据库。

提前谢谢了。

更新：这是有关该表的一些信息：

> sqlColumns(ch, "MV_BRM_COMMUNICATION_DM")[3:7]
                TABLE_NAME                COLUMN_NAME DATA_TYPE        TYPE_NAME COLUMN_SIZE
1  MV_BRM_COMMUNICATION_DM               COMM_ITEM_PK         3          DECIMAL          19
2  MV_BRM_COMMUNICATION_DM              COMM_ERROR_PK         3          DECIMAL          19
3  MV_BRM_COMMUNICATION_DM       COMM_ADDRESS_PRLO_PK         8 DOUBLE PRECISION           0
4  MV_BRM_COMMUNICATION_DM       COMM_ADDRESS_LOPR_PK         8 DOUBLE PRECISION           0
5  MV_BRM_COMMUNICATION_DM         COMM_ADDRESS_PR_PK         8 DOUBLE PRECISION           0
6  MV_BRM_COMMUNICATION_DM    COMM_OUTBOUNDMESSAGE_ID        12         VARCHAR2         144
7  MV_BRM_COMMUNICATION_DM                  COMM_PIDM         3          DECIMAL          19
8  MV_BRM_COMMUNICATION_DM            COMM_CREATED_BY        12         VARCHAR2        1020
9  MV_BRM_COMMUNICATION_DM         COMM_CREATION_DATE        -4     TIMESTAMP(3)  2147483647
10 MV_BRM_COMMUNICATION_DM COMM_GENERIC_TEMPLATE_NAME        12         VARCHAR2        1020
11 MV_BRM_COMMUNICATION_DM         COMM_TEMPLATE_NAME        12         VARCHAR2        2044
12 MV_BRM_COMMUNICATION_DM      COMM_TEMPLATE_VERSION        12         VARCHAR2        1020
13 MV_BRM_COMMUNICATION_DM             DATE_COMM_SENT        -4     TIMESTAMP(3)  2147483647
14 MV_BRM_COMMUNICATION_DM             COMM_DATE_SENT        -4     TIMESTAMP(3)  2147483647
15 MV_BRM_COMMUNICATION_DM COMM_COMMUNICATION_CHANNEL        12         VARCHAR2        1020
16 MV_BRM_COMMUNICATION_DM               COMM_SUBJECT        12         VARCHAR2        1020
17 MV_BRM_COMMUNICATION_DM              COMM_EMAIL_PK         3          DECIMAL          19
18 MV_BRM_COMMUNICATION_DM            COMM_TO_ADDRESS        12         VARCHAR2        1020
19 MV_BRM_COMMUNICATION_DM            COMM_ISP_DOMAIN        12         VARCHAR2        4000
20 MV_BRM_COMMUNICATION_DM                COMM_CCLIST        12         VARCHAR2        1020
21 MV_BRM_COMMUNICATION_DM               COMM_BCCLIST        12         VARCHAR2        1020
22 MV_BRM_COMMUNICATION_DM               COMM_REPLYTO        12         VARCHAR2        1020
23 MV_BRM_COMMUNICATION_DM                COMM_SENDER        12         VARCHAR2        1020
24 MV_BRM_COMMUNICATION_DM        COMM_REFERENCE_DESC        12         VARCHAR2        1020
25 MV_BRM_COMMUNICATION_DM          COMM_OPTOUT_TOKEN        12         VARCHAR2        1020
26 MV_BRM_COMMUNICATION_DM        COMM_DELIVERED_FLAG         8 DOUBLE PRECISION           0
27 MV_BRM_COMMUNICATION_DM           COMM_OPTOUT_FLAG         8 DOUBLE PRECISION           0
28 MV_BRM_COMMUNICATION_DM           COMM_OPTOUT_DATE        93             DATE          19
29 MV_BRM_COMMUNICATION_DM        COMM_OPTOUT_CHANNEL        12         VARCHAR2         200
30 MV_BRM_COMMUNICATION_DM            COMM_OPTIN_FLAG         8 DOUBLE PRECISION           0
31 MV_BRM_COMMUNICATION_DM            COMM_OPTIN_DATE        93             DATE          19
32 MV_BRM_COMMUNICATION_DM         COMM_OPTIN_CHANNEL        12         VARCHAR2         200
33 MV_BRM_COMMUNICATION_DM               COMM_OPTLOCK         8 DOUBLE PRECISION           0
34 MV_BRM_COMMUNICATION_DM            COMM_ERROR_FLAG         8 DOUBLE PRECISION           0
35 MV_BRM_COMMUNICATION_DM          COMM_BOUNCED_FLAG         8 DOUBLE PRECISION           0
36 MV_BRM_COMMUNICATION_DM               COMM_ONE_OFF         8 DOUBLE PRECISION           0
37 MV_BRM_COMMUNICATION_DM               COMM_OWNERID        12         VARCHAR2        1020
38 MV_BRM_COMMUNICATION_DM             COMM_OWNERNAME        12         VARCHAR2        2044
39 MV_BRM_COMMUNICATION_DM             COMM_OWNER_KEY         3          DECIMAL          19
40 MV_BRM_COMMUNICATION_DM                COMM_ORG_ID         3          DECIMAL          19
41 MV_BRM_COMMUNICATION_DM              COMM_ORG_NAME        12         VARCHAR2        1020
42 MV_BRM_COMMUNICATION_DM        COMM_CONTENT_PURGED        12         VARCHAR2          16
43 MV_BRM_COMMUNICATION_DM         COMM_ACTIVITY_DATE        93             DATE          19
44 MV_BRM_COMMUNICATION_DM              ACTIVITY_DATE        93             DATE          19
45 MV_BRM_COMMUNICATION_DM               COMM_ITEM_PK         3          DECIMAL          19
46 MV_BRM_COMMUNICATION_DM              COMM_ERROR_PK         3          DECIMAL          19
47 MV_BRM_COMMUNICATION_DM       COMM_ADDRESS_PRLO_PK         8 DOUBLE PRECISION           0
48 MV_BRM_COMMUNICATION_DM       COMM_ADDRESS_LOPR_PK         8 DOUBLE PRECISION           0
49 MV_BRM_COMMUNICATION_DM         COMM_ADDRESS_PR_PK         8 DOUBLE PRECISION           0
50 MV_BRM_COMMUNICATION_DM    COMM_OUTBOUNDMESSAGE_ID        12         VARCHAR2         144
51 MV_BRM_COMMUNICATION_DM                  COMM_PIDM         3          DECIMAL          19
52 MV_BRM_COMMUNICATION_DM            COMM_CREATED_BY        12         VARCHAR2        1020
53 MV_BRM_COMMUNICATION_DM         COMM_CREATION_DATE        -4     TIMESTAMP(3)  2147483647
54 MV_BRM_COMMUNICATION_DM COMM_GENERIC_TEMPLATE_NAME        12         VARCHAR2        1020
55 MV_BRM_COMMUNICATION_DM         COMM_TEMPLATE_NAME        12         VARCHAR2        2044
56 MV_BRM_COMMUNICATION_DM      COMM_TEMPLATE_VERSION        12         VARCHAR2        1020
57 MV_BRM_COMMUNICATION_DM             DATE_COMM_SENT        -4     TIMESTAMP(3)  2147483647
58 MV_BRM_COMMUNICATION_DM             COMM_DATE_SENT        -4     TIMESTAMP(3)  2147483647
59 MV_BRM_COMMUNICATION_DM COMM_COMMUNICATION_CHANNEL        12         VARCHAR2        1020
60 MV_BRM_COMMUNICATION_DM               COMM_SUBJECT        12         VARCHAR2        1020
61 MV_BRM_COMMUNICATION_DM              COMM_EMAIL_PK         3          DECIMAL          19
62 MV_BRM_COMMUNICATION_DM            COMM_TO_ADDRESS        12         VARCHAR2        1020
63 MV_BRM_COMMUNICATION_DM            COMM_ISP_DOMAIN        12         VARCHAR2        4000
64 MV_BRM_COMMUNICATION_DM                COMM_CCLIST        12         VARCHAR2        1020
65 MV_BRM_COMMUNICATION_DM               COMM_BCCLIST        12         VARCHAR2        1020
66 MV_BRM_COMMUNICATION_DM               COMM_REPLYTO        12         VARCHAR2        1020
67 MV_BRM_COMMUNICATION_DM                COMM_SENDER        12         VARCHAR2        1020
68 MV_BRM_COMMUNICATION_DM        COMM_REFERENCE_DESC        12         VARCHAR2        1020
69 MV_BRM_COMMUNICATION_DM          COMM_OPTOUT_TOKEN        12         VARCHAR2        1020
70 MV_BRM_COMMUNICATION_DM        COMM_DELIVERED_FLAG         8 DOUBLE PRECISION           0
71 MV_BRM_COMMUNICATION_DM           COMM_OPTOUT_FLAG         8 DOUBLE PRECISION           0
72 MV_BRM_COMMUNICATION_DM           COMM_OPTOUT_DATE        93             DATE          19
73 MV_BRM_COMMUNICATION_DM        COMM_OPTOUT_CHANNEL        12         VARCHAR2         200
74 MV_BRM_COMMUNICATION_DM            COMM_OPTIN_FLAG         8 DOUBLE PRECISION           0
75 MV_BRM_COMMUNICATION_DM            COMM_OPTIN_DATE        93             DATE          19
76 MV_BRM_COMMUNICATION_DM         COMM_OPTIN_CHANNEL        12         VARCHAR2         200
77 MV_BRM_COMMUNICATION_DM               COMM_OPTLOCK         8 DOUBLE PRECISION           0
78 MV_BRM_COMMUNICATION_DM            COMM_ERROR_FLAG         8 DOUBLE PRECISION           0
79 MV_BRM_COMMUNICATION_DM          COMM_BOUNCED_FLAG         8 DOUBLE PRECISION           0
80 MV_BRM_COMMUNICATION_DM               COMM_ONE_OFF         8 DOUBLE PRECISION           0
81 MV_BRM_COMMUNICATION_DM               COMM_OWNERID        12         VARCHAR2        1020
82 MV_BRM_COMMUNICATION_DM             COMM_OWNERNAME        12         VARCHAR2        2044
83 MV_BRM_COMMUNICATION_DM             COMM_OWNER_KEY         3          DECIMAL          19
84 MV_BRM_COMMUNICATION_DM                COMM_ORG_ID         3          DECIMAL          19
85 MV_BRM_COMMUNICATION_DM              COMM_ORG_NAME        12         VARCHAR2        1020
86 MV_BRM_COMMUNICATION_DM        COMM_CONTENT_PURGED        12         VARCHAR2          16
87 MV_BRM_COMMUNICATION_DM         COMM_ACTIVITY_DATE        93             DATE          19
88 MV_BRM_COMMUNICATION_DM              ACTIVITY_DATE        93             DATE          19

score 1 · Accepted Answer

这是我的想法，还有一些可以尝试的东西。

有趣的是，它失败的字段是表中 TIMESTAMP 的第一个实例。研究 TIMESTAMP 可能与它有关的理论，首先让我们在 MV_BRM_COMMUNICATION_DM 上创建一个视图，它将所有 TIMESTAMP 字段转换为 DATE：

CREATE VIEW MV_BRM_COMM_DM_VIEW AS
  SELECT COMM_ITEM_PK, COMM_ERROR_PK, COMM_ADDRESS_PRLO_PK,
         COMM_ADDRESS_LOPR_PK, COMM_ADDRESS_PR_PK,
         COMM_OUTBOUNDMESSAGE_ID, COMM_PIDM, COMM_CREATED_BY,
         TO_DATE(COMM_CREATION_DATE) AS COMM_CREATION_DATE,
         COMM_GENERIC_TEMPLATE_NAME, COMM_TEMPLATE_NAME,
         COMM_TEMPLATE_VERSION,
         TO_DATE(DATE_COMM_SENT) AS DATE_COMM_SENT,
         TO_DATE(COMM_DATE_SENT) AS COMM_DATE_SENT,
         COMM_COMMUNICATION_CHANNEL, COMM_SUBJECT, COMM_EMAIL_PK,
         COMM_TO_ADDRESS, COMM_ISP_DOMAIN, COMM_CCLIST,
         COMM_BCCLIST, COMM_REPLYTO, COMM_SENDER, COMM_REFERENCE_DESC,
         COMM_OPTOUT_TOKEN, COMM_DELIVERED_FLAG, COMM_OPTOUT_FLAG,
         COMM_OPTOUT_DATE, COMM_OPTOUT_CHANNEL, COMM_OPTIN_FLAG,
         COMM_OPTIN_DATE, COMM_OPTIN_CHANNEL, COMM_OPTLOCK,
         COMM_ERROR_FLAG, COMM_BOUNCED_FLAG, COMM_ONE_OFF,
         COMM_OWNERID, COMM_OWNERNAME, COMM_OWNER_KEY, COMM_ORG_ID,
         COMM_ORG_NAME, COMM_CONTENT_PURGED, COMM_ACTIVITY_DATE,
         ACTIVITY_DATE
    FROM MV_BRM_COMMUNICATION_DM

现在，将您的 SELECT 更改为从视图中读取，看看情况是否有所不同。

不能保证，因为我无法针对您的环境进行测试，但这是开始的事情。

分享和享受。

sql - RODBC 查询不返回数据

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