ABAP Select data from SAP table RETRANSF_DIS into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RETRANSF_DIS
*  INTO TABLE @DATA(IT_RETRANSF_DIS2).
*--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_RETRANSF_DIS INDEX 1 INTO DATA(WA_RETRANSF_DIS2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RETRANSF_DIS>-SENDER = 1.
<RETRANSF_DIS>-RECEIVER = 1.
<RETRANSF_DIS>-AGGVK = 1.
<RETRANSF_DIS>-GPART = 1.
<RETRANSF_DIS>-VKONT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RETRANSF_DIS-BUKRS, sy-vline,
  WA_RETRANSF_DIS-THPRD, sy-vline,
  WA_RETRANSF_DIS-THPDT, sy-vline,
  WA_RETRANSF_DIS-THPST, sy-vline,
  WA_RETRANSF_DIS-THBLN_TYPE, sy-vline,
  WA_RETRANSF_DIS-THBLN_EXT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RETRANSF_DIS 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_RETRANSF_DIS 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_RETRANSF_DIS INTO WA_RETRANSF_DIS.


*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 AGGVK
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RETRANSF_DIS-AGGVK
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RETRANSF_DIS-AGGVK.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

*Conversion exit GJAHR, internal->external for field GJAHR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_RETRANSF_DIS-GJAHR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RETRANSF_DIS-GJAHR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field PAYBL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RETRANSF_DIS-PAYBL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RETRANSF_DIS-PAYBL.
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_RETRANSF_DIS_STR, 
SENDER TYPE STRING,
RECEIVER TYPE STRING,
AGGVK TYPE STRING,
GPART TYPE STRING,
VKONT TYPE STRING,
BUKRS TYPE STRING,
THPRD TYPE STRING,
THPDT TYPE STRING,
THPST TYPE STRING,
THBLN_TYPE TYPE STRING,
THBLN_EXT TYPE STRING,
STORB TYPE STRING,
GJAHR TYPE STRING,
DATE_OF_RECEIPT TYPE STRING,
INVOICE_DATE TYPE STRING,
DATE_OF_PAYMENT TYPE STRING,
INT_INV_DOC_NO TYPE STRING,
EXT_INVOICE_NO TYPE STRING,
PAYBL TYPE STRING,
RTCHECK TYPE STRING,
RTDATE TYPE STRING,
RRTIME TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RETRANSF_DIS_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_RETRANSF_DIS_STR-SENDER sy-vline 
WA_RETRANSF_DIS_STR-RECEIVER sy-vline 
WA_RETRANSF_DIS_STR-AGGVK sy-vline 
WA_RETRANSF_DIS_STR-GPART sy-vline 
WA_RETRANSF_DIS_STR-VKONT sy-vline 
WA_RETRANSF_DIS_STR-BUKRS sy-vline 
WA_RETRANSF_DIS_STR-THPRD sy-vline 
WA_RETRANSF_DIS_STR-THPDT sy-vline 
WA_RETRANSF_DIS_STR-THPST sy-vline 
WA_RETRANSF_DIS_STR-THBLN_TYPE sy-vline 
WA_RETRANSF_DIS_STR-THBLN_EXT sy-vline 
WA_RETRANSF_DIS_STR-STORB sy-vline 
WA_RETRANSF_DIS_STR-GJAHR sy-vline 
WA_RETRANSF_DIS_STR-DATE_OF_RECEIPT sy-vline 
WA_RETRANSF_DIS_STR-INVOICE_DATE sy-vline 
WA_RETRANSF_DIS_STR-DATE_OF_PAYMENT sy-vline 
WA_RETRANSF_DIS_STR-INT_INV_DOC_NO sy-vline 
WA_RETRANSF_DIS_STR-EXT_INVOICE_NO sy-vline 
WA_RETRANSF_DIS_STR-PAYBL sy-vline 
WA_RETRANSF_DIS_STR-RTCHECK sy-vline 
WA_RETRANSF_DIS_STR-RTDATE sy-vline 
WA_RETRANSF_DIS_STR-RRTIME sy-vline      INTO ld_text SEPARATED BY SPACE.

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