ABAP Select data from SAP table RCRDTMBP40 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP RCRDTMBP40 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 RCRDTMBP40. 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 RCRDTMBP40 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_RCRDTMBP40 TYPE STANDARD TABLE OF RCRDTMBP40,
      WA_RCRDTMBP40 TYPE RCRDTMBP40,
      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: <RCRDTMBP40> TYPE RCRDTMBP40.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_RCRDTMBP40.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM RCRDTMBP40
  INTO TABLE IT_RCRDTMBP40.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RCRDTMBP40
*  INTO TABLE @DATA(IT_RCRDTMBP402).
*--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_RCRDTMBP40 INDEX 1 INTO DATA(WA_RCRDTMBP402).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_RCRDTMBP40 ASSIGNING <RCRDTMBP40>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RCRDTMBP40>-MANDT = 1.
<RCRDTMBP40>-BUSINESSPARTNER = 1.
<RCRDTMBP40>-CREDITSEGMENT = 1.
<RCRDTMBP40>-CRDTACCTINFORMATIONCATEGORY = 1.
<RCRDTMBP40>-CRDTACCTINFORMATIONTYPE = 1.

ENDLOOP.

LOOP AT IT_RCRDTMBP40 INTO WA_RCRDTMBP40.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RCRDTMBP40-SEQUENCENUMBER, sy-vline,
  WA_RCRDTMBP40-EXCEPTIONISCREDITCHECKRELEVANT, sy-vline,
  WA_RCRDTMBP40-ADDLCREDITDOCAMTINTRANSACCRCY, sy-vline,
  WA_RCRDTMBP40-TRANSACTIONCURRENCY, sy-vline,
  WA_RCRDTMBP40-VALIDITYSTARTDATE, sy-vline,
  WA_RCRDTMBP40-VALIDITYENDDATE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RCRDTMBP40 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_RCRDTMBP40 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_RCRDTMBP40 INTO WA_RCRDTMBP40.


*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 BUSINESSPARTNER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RCRDTMBP40-BUSINESSPARTNER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RCRDTMBP40-BUSINESSPARTNER.
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_RCRDTMBP40_STR, 
MANDT TYPE STRING,
BUSINESSPARTNER TYPE STRING,
CREDITSEGMENT TYPE STRING,
CRDTACCTINFORMATIONCATEGORY TYPE STRING,
CRDTACCTINFORMATIONTYPE TYPE STRING,
SEQUENCENUMBER TYPE STRING,
EXCEPTIONISCREDITCHECKRELEVANT TYPE STRING,
ADDLCREDITDOCAMTINTRANSACCRCY TYPE STRING,
TRANSACTIONCURRENCY TYPE STRING,
VALIDITYSTARTDATE TYPE STRING,
VALIDITYENDDATE TYPE STRING,
ADDITIONALCREDITDOCCOMMENT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RCRDTMBP40_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_RCRDTMBP40_STR-MANDT sy-vline 
WA_RCRDTMBP40_STR-BUSINESSPARTNER sy-vline 
WA_RCRDTMBP40_STR-CREDITSEGMENT sy-vline 
WA_RCRDTMBP40_STR-CRDTACCTINFORMATIONCATEGORY sy-vline 
WA_RCRDTMBP40_STR-CRDTACCTINFORMATIONTYPE sy-vline 
WA_RCRDTMBP40_STR-SEQUENCENUMBER sy-vline 
WA_RCRDTMBP40_STR-EXCEPTIONISCREDITCHECKRELEVANT sy-vline 
WA_RCRDTMBP40_STR-ADDLCREDITDOCAMTINTRANSACCRCY sy-vline 
WA_RCRDTMBP40_STR-TRANSACTIONCURRENCY sy-vline 
WA_RCRDTMBP40_STR-VALIDITYSTARTDATE sy-vline 
WA_RCRDTMBP40_STR-VALIDITYENDDATE sy-vline 
WA_RCRDTMBP40_STR-ADDITIONALCREDITDOCCOMMENT sy-vline      INTO ld_text SEPARATED BY SPACE.

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