ABAP Select data from SAP table CDEBITMRWLF1988 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP CDEBITMRWLF1988 table and store it within an internal table, including using the newer @DATA inline declaration methods. It also shows you various ways to process this data using ABAP work area, inline declaration or field symbols including executing all the relevant CONVERSION_EXIT routines specific to CDEBITMRWLF1988. See here for more generic Select statement tips.

Sometimes data within SAP is stored within the database table in a different format to what it is displayed to the user. These input/output conversation FM routines are what translates the data between the two formats.

There is also a full declaration of the CDEBITMRWLF1988 table where each field has a char/string type for you to simply copy and paste. This allows you to use processing that is only available to these field types such as the CONCATENATE statement.

DATA: IT_CDEBITMRWLF1988 TYPE STANDARD TABLE OF CDEBITMRWLF1988,
      WA_CDEBITMRWLF1988 TYPE CDEBITMRWLF1988,
      GD_STR TYPE STRING.

DATA: lo_typedescr type REF TO cl_abap_typedescr.
DATA: lv_fieldname type fieldname.

FIELD-SYMBOLS: <FIELD> TYPE any.
FIELD-SYMBOLS: <CDEBITMRWLF1988> TYPE CDEBITMRWLF1988.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_CDEBITMRWLF1988.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM CDEBITMRWLF1988
  INTO TABLE IT_CDEBITMRWLF1988.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CDEBITMRWLF1988
*  INTO TABLE @DATA(IT_CDEBITMRWLF19882).
*--Further methods of using ABAP code to  select data from SAP database tables

*You can also declare the header/work area using the in-line DATA declaration method
READ TABLE IT_CDEBITMRWLF1988 INDEX 1 INTO DATA(WA_CDEBITMRWLF19882).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_CDEBITMRWLF1988 ASSIGNING <CDEBITMRWLF1988>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CDEBITMRWLF1988>-MANDT = 1.
<CDEBITMRWLF1988>-DEBITMEMOREQUEST = 1.
<CDEBITMRWLF1988>-SOLDTOPARTY = 1.
<CDEBITMRWLF1988>-CUSTOMERNAME = 1.
<CDEBITMRWLF1988>-PURCHASEORDERBYCUSTOMER = 1.

ENDLOOP.

LOOP AT IT_CDEBITMRWLF1988 INTO WA_CDEBITMRWLF1988.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CDEBITMRWLF1988-BILLINGDOCUMENTDATE, sy-vline,
  WA_CDEBITMRWLF1988-OVERALLORDRELTDBILLGSTATUS, sy-vline,
  WA_CDEBITMRWLF1988-OVERALLSDPROCESSSTATUS, sy-vline,
  WA_CDEBITMRWLF1988-OVERALLSDDOCUMENTREJECTIONSTS, sy-vline,
  WA_CDEBITMRWLF1988-OVERALLBILLINGBLOCKSTATUS, sy-vline,
  WA_CDEBITMRWLF1988-SALESDOCAPPROVALSTATUS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CDEBITMRWLF1988 you want to display...

  WRITE:/ sy-uline.
* Aternatively use generic code to Write field values (and NAME) to screen report
  DO.
    ASSIGN COMPONENT sy-index OF STRUCTURE wa_CDEBITMRWLF1988 TO <field>.
    IF sy-subrc <> 0. EXIT. ENDIF.
    WRITE:/ 'Field Value', <field>, sy-vline.
    gd_str = <field> .
    lo_typedescr ?= CL_ABAP_DATADESCR=>DESCRIBE_BY_DATA( <field> ).
    lv_fieldname = lo_typedescr->GET_RELATIVE_NAME( ).
    WRITE:/ 'Field Name', lv_fieldname.
  ENDDO.

  
*Redo loop but convert all fields from internal to out value  
LOOP AT IT_CDEBITMRWLF1988 INTO WA_CDEBITMRWLF1988.


*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Convert all fields to display/output versions using conversion routines
  PERFORM convert_all_field_values CHANGING wa_EKKO.
	 
ENDLOOP.

  
*&---------------------------------------------------------------------*
*& Form convert_all_field_values
*&---------------------------------------------------------------------*
FORM convert_all_field_values CHANGING p_EKKO LIKE wa_EKKO.
DATA: ld_input(1000) TYPE c, ld_output(1000) TYPE C.

*Conversion exit ALPHA, internal->external for field DEBITMEMOREQUEST
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CDEBITMRWLF1988-DEBITMEMOREQUEST
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CDEBITMRWLF1988-DEBITMEMOREQUEST.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field SOLDTOPARTY
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CDEBITMRWLF1988-SOLDTOPARTY
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CDEBITMRWLF1988-SOLDTOPARTY.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AUART, internal->external for field DEBITMEMOREQUESTTYPE
CALL FUNCTION 'CONVERSION_EXIT_AUART_OUTPUT'
  EXPORTING
    input =                      WA_CDEBITMRWLF1988-DEBITMEMOREQUESTTYPE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CDEBITMRWLF1988-DEBITMEMOREQUESTTYPE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field REFERENCESDDOCUMENT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CDEBITMRWLF1988-REFERENCESDDOCUMENT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CDEBITMRWLF1988-REFERENCESDDOCUMENT.
WRITE:/ 'New Value:', ld_input.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_CDEBITMRWLF1988_STR, 
MANDT TYPE STRING,
DEBITMEMOREQUEST TYPE STRING,
SOLDTOPARTY TYPE STRING,
CUSTOMERNAME TYPE STRING,
PURCHASEORDERBYCUSTOMER TYPE STRING,
BILLINGDOCUMENTDATE TYPE STRING,
OVERALLORDRELTDBILLGSTATUS TYPE STRING,
OVERALLSDPROCESSSTATUS TYPE STRING,
OVERALLSDDOCUMENTREJECTIONSTS TYPE STRING,
OVERALLBILLINGBLOCKSTATUS TYPE STRING,
SALESDOCAPPROVALSTATUS TYPE STRING,
SALESDOCAPPROVALSTATUSDESC TYPE STRING,
TRANSACTIONCURRENCY TYPE STRING,
TOTALNETAMOUNT TYPE STRING,
DEBITMEMOREQUESTDATE TYPE STRING,
HEADERBILLINGBLOCKREASON TYPE STRING,
DEBITMEMOREQUESTTYPE TYPE STRING,
SALESORGANIZATION TYPE STRING,
DISTRIBUTIONCHANNEL TYPE STRING,
ORGANIZATIONDIVISION TYPE STRING,
SALESOFFICE TYPE STRING,
SALESGROUP TYPE STRING,
CREATIONDATE TYPE STRING,
LASTCHANGEDATE TYPE STRING,
CREATEDBYUSER TYPE STRING,
LASTCHANGEDBYUSER TYPE STRING,
LASTCHANGEDATETIME TYPE STRING,
REFERENCESDDOCUMENT TYPE STRING,
SDDOCUMENTREASON TYPE STRING,
DEBITMEMOREQUESTPROCESSINGTYPE TYPE STRING,
SALESDOCUMENTRJCNREASON TYPE STRING,
CUSTOMERPROJECT TYPE STRING,
DEBITMEMOREQAPPRVLSTSCRITLTY TYPE STRING,
ORGANIZATIONBPNAME1 TYPE STRING,
ORGANIZATIONBPNAME2 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CDEBITMRWLF1988_STR type T_EKKO_STR.

DATA: ld_text TYPE string.

LOOP AT IT_EKKO INTO WA_EKKO.
  MOVE-CORRESPONDING wa_EKKO TO WA_EKKO_STR.
  CONCATENATE: sy-vline
WA_CDEBITMRWLF1988_STR-MANDT sy-vline 
WA_CDEBITMRWLF1988_STR-DEBITMEMOREQUEST sy-vline 
WA_CDEBITMRWLF1988_STR-SOLDTOPARTY sy-vline 
WA_CDEBITMRWLF1988_STR-CUSTOMERNAME sy-vline 
WA_CDEBITMRWLF1988_STR-PURCHASEORDERBYCUSTOMER sy-vline 
WA_CDEBITMRWLF1988_STR-BILLINGDOCUMENTDATE sy-vline 
WA_CDEBITMRWLF1988_STR-OVERALLORDRELTDBILLGSTATUS sy-vline 
WA_CDEBITMRWLF1988_STR-OVERALLSDPROCESSSTATUS sy-vline 
WA_CDEBITMRWLF1988_STR-OVERALLSDDOCUMENTREJECTIONSTS sy-vline 
WA_CDEBITMRWLF1988_STR-OVERALLBILLINGBLOCKSTATUS sy-vline 
WA_CDEBITMRWLF1988_STR-SALESDOCAPPROVALSTATUS sy-vline 
WA_CDEBITMRWLF1988_STR-SALESDOCAPPROVALSTATUSDESC sy-vline 
WA_CDEBITMRWLF1988_STR-TRANSACTIONCURRENCY sy-vline 
WA_CDEBITMRWLF1988_STR-TOTALNETAMOUNT sy-vline 
WA_CDEBITMRWLF1988_STR-DEBITMEMOREQUESTDATE sy-vline 
WA_CDEBITMRWLF1988_STR-HEADERBILLINGBLOCKREASON sy-vline 
WA_CDEBITMRWLF1988_STR-DEBITMEMOREQUESTTYPE sy-vline 
WA_CDEBITMRWLF1988_STR-SALESORGANIZATION sy-vline 
WA_CDEBITMRWLF1988_STR-DISTRIBUTIONCHANNEL sy-vline 
WA_CDEBITMRWLF1988_STR-ORGANIZATIONDIVISION sy-vline 
WA_CDEBITMRWLF1988_STR-SALESOFFICE sy-vline 
WA_CDEBITMRWLF1988_STR-SALESGROUP sy-vline 
WA_CDEBITMRWLF1988_STR-CREATIONDATE sy-vline 
WA_CDEBITMRWLF1988_STR-LASTCHANGEDATE sy-vline 
WA_CDEBITMRWLF1988_STR-CREATEDBYUSER sy-vline 
WA_CDEBITMRWLF1988_STR-LASTCHANGEDBYUSER sy-vline 
WA_CDEBITMRWLF1988_STR-LASTCHANGEDATETIME sy-vline 
WA_CDEBITMRWLF1988_STR-REFERENCESDDOCUMENT sy-vline 
WA_CDEBITMRWLF1988_STR-SDDOCUMENTREASON sy-vline 
WA_CDEBITMRWLF1988_STR-DEBITMEMOREQUESTPROCESSINGTYPE sy-vline 
WA_CDEBITMRWLF1988_STR-SALESDOCUMENTRJCNREASON sy-vline 
WA_CDEBITMRWLF1988_STR-CUSTOMERPROJECT sy-vline 
WA_CDEBITMRWLF1988_STR-DEBITMEMOREQAPPRVLSTSCRITLTY sy-vline 
WA_CDEBITMRWLF1988_STR-ORGANIZATIONBPNAME1 sy-vline 
WA_CDEBITMRWLF1988_STR-ORGANIZATIONBPNAME2 sy-vline      INTO ld_text SEPARATED BY SPACE.

*Add any further fields from structure WA_EKKO_STR you want to CONCATENATE...
ENDLOOP.
ENDFORM.