问题

I got a task to load a strangely formatted text file. The file contains unwanted data too. It contains two headers back to back and data for each header is specified on alternate lines. Header rows start after ------. I need to read both the header along with its corresponding data and dump it into some Excel/table destination using. Let me know how to solve this using any transformation in SSIS or maybe with a script. Don't know how to use script task for this.

Right now I am reading the file in one column and using a derived column manually trying to split it using substring function. But that works for only one header and it is too hard coded type. I need some dynamic approach to read header rows as well as data row directly.

Input file:

A1234-012                                         I N F O R M A T I C S  C O M P A N Y                                      08/23/17
PAGE    2 BATCH ABC                                           PAYMENT DATE & DUE DATE                                 EDIT PAGE  481
------------------------------------------------------------------------------------------------------------------------------------
 SEO  XRAT CLT     LOAN      OPENING  PAYMENT MATURIUH LOAN NEXE ORIG-AMT   OFF TO CATE  CONTC MON NO.TO  TOL NEL   S CUP CO IND PAT
 NOM  CODE NOM    NOMTER      DATE    DUO DATE  DATE   TIME PT #  MONEY         AQ LOAN  NUMBER    BLOCK   PAYMENT  U TYP GH OMG IND
       1-3 4-6  7-13/90-102  14-19    20-25     26-31 32-34 35-37 38-46   47-48 49 50-51 52-61  62  63      64-72  73 4-5 76 77 8-80
------------------------------------------------------------------------------------------------------------------------------------
 SEO  XRAT CLT     LOAN     A/C   A/C     MIN     MAX    MAX   PENDI  LATE CCH  L/F  PARTLYS  CUR   L/F      L/F     L/F
 NOM  CODE NOM    NOMTER    CODE FACTOR   MON     MON    ROAD   DAYS  MONE POT  L/A  L/F JAC  INT  VAD CD  USED PI  VAD DT
       1-3 4-6  7-13/90-102  14  15      20-23   24-29   30-34 35-37   38-42    43     44     49     60     61-63    64-69
USED-ID:
------------------------------------------------------------------------------------------------------------------------------------
454542 070 567    2136547895 08-08-18 08-06-18 11-02-18 123 256      62,222  LK  5 55 5463218975 5 3       5,555.22    33        H55
025641 055 123    5144511352 B  .55321   2.55 6531.22                                                 H      #AS
454542 070 567    2136547895 08-08-18 08-06-18 11-02-18 123 256      62,222  LK  5 55 5463218975 5 3       5,555.22    33        H55
025641 055 123    5144511352 B  .55321   2.55 6531.22                                                 H      #AS
454542 070 567    2136547895 08-08-18 08-06-18 11-02-18 123 256      62,222  LK  5 55 5463218975 5 3       5,555.22    33        H55
025641 055 123    5144511352 B  .55321   2.55 6531.22                                                 H      #AS

Expected output should be:

FILE 1:

 SEO  XRAT CLT     LOAN      OPENING  PAYMENT MATURIUH LOAN NEXE ORIG-AMT   OFF TO CATE  CONTC MON NO.TO  TOL NEL   S CUP CO IND PAT
 NOM  CODE NOM    NOMTER      DATE    DUO DATE  DATE   TIME PT #  MONEY         AQ LOAN  NUMBER    BLOCK   PAYMENT  U TYP GH OMG IND
454542 070 567    2136547895 08-08-18 08-06-18 11-02-18 123 256      62,222  LK  5 55 5463218975 5 3       5,555.22    33        H55
454542 070 567    2136547895 08-08-18 08-06-18 11-02-18 123 256      62,222  LK  5 55 5463218975 5 3       5,555.22    33        H55
454542 070 567    2136547895 08-08-18 08-06-18 11-02-18 123 256      62,222  LK  5 55 5463218975 5 3       5,555.22    33        H55

FILE 2:

 SEO  XRAT CLT     LOAN     A/C   A/C     MIN     MAX    MAX   PENDI  LATE CCH  L/F  PARTLYS  CUR   L/F      L/F     L/F
 NOM  CODE NOM    NOMTER    CODE FACTOR   MON     MON    ROAD   DAYS  MONE POT  L/A  L/F JAC  INT  VAD CD  USED PI  VAD DT
025641 055 123    5144511352 B  .55321   2.55 6531.22                                                 H      #AS
025641 055 123    5144511352 B  .55321   2.55 6531.22                                                 H      #AS
025641 055 123    5144511352 B  .55321   2.55 6531.22                                                 H      #AS

回答1:

Ignore first 3 rows

To ignore first 3 rows you can simply configure the flat file connection manager to ignore them, similar to:

Split file and remove bad rows

1. Configure connection managers

In addition, in the flat file connection manager, go to the advanced tab and delete all columns except one and change its data type to DT_STR and the MaxLength to 4000.

Add two connection managers , one for each destination file where you must define only one column with max length = 4000:

2. Configure Data flow task

Add a Data Flow Task, And add a Flat File Source inside. Select the Source File connection manager.

Add a conditional split with the following expressions:

File1

FINDSTRING([Column 0],"OPENING",1) > 1 || FINDSTRING([Column 0],"DATE",1) > 1 || TOKENCOUNT([Column 0]," ") == 19

File2

FINDSTRING([Column 0],"A/C",1) > 1 || FINDSTRING([Column 0],"FACTOR",1) > 1 || TOKENCOUNT([Column 0]," ") == 10

The expressions above are created based on the expected output you mentioned in the question, i tired to search for unique keywords inside each header and splitted the data rows based on the number of space occurrence.

Finally Map each output to a destination flat file component:

Experiments

The execution result is shown in the following screenshots:

Update 1 - Remove duplicates

To remove duplicates you must you can refer to the following link:

How to remove duplicate rows from flat file using SSIS?

Update 2 - Remove only duplicates headers + Replace spaces with Tab

If you need only to remove duplicate headers then you can do this in two steps:

Add a script component after each conditional split output to flag unwanted rows
Add a conditional split to filter rows based on the script component output

In addition, because the columns values does not contains spaces you can use regular expression to replace spaces with single Tab to make the file consistent.

Script Component

In the Script Component add an output column of type DT_BOOL and name it outFlag also add a output column outColumn0 of type DT_STR and length equal to 4000 and select Column0 as Input Column.

Then write the following script in the Script Editor (C#):

First make sure that you add the RegularExpressions namespace

using System.Text.RegularExpressions;

Script Code

int SEOCount = 0;
int NOMCount = 0;

Regex regex = new Regex("[ ]{2,}", RegexOptions.None);


public override void Input0_ProcessInputRow(Input0Buffer Row)
{
    if (Row.Column0.Trim().StartsWith("SEO"))
    {


        if (SEOCount == 0)
        {

            SEOCount++;
            Row.outFlag = true;

        }
        else
        {

            Row.outFlag = false;

        }



    }
    else if (Row.Column0.Trim().StartsWith("NOM"))
    {

        if (NOMCount == 0)
        {

            NOMCount++;
            Row.outFlag = true;

        }
        else
        {

            Row.outFlag = false;

        }

    }
    else if (Row.Column0.Trim().StartsWith("PAGE"))
    {
        Row.outFlag = false;
    }
    else
    {

        Row.outFlag = true;

    }


    Row.outColumn0 = regex.Replace(Row.Column0.TrimStart(), "\t");
}

Conditional Split

Add a conditional split after each Script Component and use the following expression to filter duplicate header: