ABAP Select data from SAP table HRB2A_S_DATASET into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP HRB2A_S_DATASET 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 HRB2A_S_DATASET. 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 HRB2A_S_DATASET 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_HRB2A_S_DATASET TYPE STANDARD TABLE OF HRB2A_S_DATASET,
      WA_HRB2A_S_DATASET TYPE HRB2A_S_DATASET,
      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: <HRB2A_S_DATASET> TYPE HRB2A_S_DATASET.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_HRB2A_S_DATASET.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM HRB2A_S_DATASET
  INTO TABLE IT_HRB2A_S_DATASET.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM HRB2A_S_DATASET
*  INTO TABLE @DATA(IT_HRB2A_S_DATASET2).
*--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_HRB2A_S_DATASET INDEX 1 INTO DATA(WA_HRB2A_S_DATASET2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_HRB2A_S_DATASET ASSIGNING <HRB2A_S_DATASET>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<HRB2A_S_DATASET>-MANDT = 1.
<HRB2A_S_DATASET>-MOLGA = 1.
<HRB2A_S_DATASET>-GLBID = 1.
<HRB2A_S_DATASET>-SAGRP = 1.
<HRB2A_S_DATASET>-DOCTY = 1.

ENDLOOP.

LOOP AT IT_HRB2A_S_DATASET INTO WA_HRB2A_S_DATASET.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_HRB2A_S_DATASET-B2AID, sy-vline,
  WA_HRB2A_S_DATASET-SENDR, sy-vline,
  WA_HRB2A_S_DATASET-SENTX, sy-vline,
  WA_HRB2A_S_DATASET-WERKS, sy-vline,
  WA_HRB2A_S_DATASET-BTRTL, sy-vline,
  WA_HRB2A_S_DATASET-ADRES, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_HRB2A_S_DATASET 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_HRB2A_S_DATASET 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_HRB2A_S_DATASET INTO WA_HRB2A_S_DATASET.


*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 SENDR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_HRB2A_S_DATASET-SENDR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_HRB2A_S_DATASET-SENDR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field ADRES
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_HRB2A_S_DATASET-ADRES
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_HRB2A_S_DATASET-ADRES.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field SEND2
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_HRB2A_S_DATASET-SEND2
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_HRB2A_S_DATASET-SEND2.
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_HRB2A_S_DATASET_STR, 
MANDT TYPE STRING,
MOLGA TYPE STRING,
GLBID TYPE STRING,
SAGRP TYPE STRING,
DOCTY TYPE STRING,
B2AID TYPE STRING,
SENDR TYPE STRING,
SENTX TYPE STRING,
WERKS TYPE STRING,
BTRTL TYPE STRING,
ADRES TYPE STRING,
ADRTX TYPE STRING,
VARTX TYPE STRING,
TESTD TYPE STRING,
SEND2 TYPE STRING,
SENT2 TYPE STRING,
PBREAK TYPE STRING,
STATUS TYPE STRING,
SUBST TYPE STRING,
SEQNO TYPE STRING,
GDATE TYPE STRING,
GTIME TYPE STRING,
UNAME TYPE STRING,
BMSID TYPE STRING,
HISFL TYPE STRING,END OF T_EKKO_STR.
DATA: WA_HRB2A_S_DATASET_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_HRB2A_S_DATASET_STR-MANDT sy-vline 
WA_HRB2A_S_DATASET_STR-MOLGA sy-vline 
WA_HRB2A_S_DATASET_STR-GLBID sy-vline 
WA_HRB2A_S_DATASET_STR-SAGRP sy-vline 
WA_HRB2A_S_DATASET_STR-DOCTY sy-vline 
WA_HRB2A_S_DATASET_STR-B2AID sy-vline 
WA_HRB2A_S_DATASET_STR-SENDR sy-vline 
WA_HRB2A_S_DATASET_STR-SENTX sy-vline 
WA_HRB2A_S_DATASET_STR-WERKS sy-vline 
WA_HRB2A_S_DATASET_STR-BTRTL sy-vline 
WA_HRB2A_S_DATASET_STR-ADRES sy-vline 
WA_HRB2A_S_DATASET_STR-ADRTX sy-vline 
WA_HRB2A_S_DATASET_STR-VARTX sy-vline 
WA_HRB2A_S_DATASET_STR-TESTD sy-vline 
WA_HRB2A_S_DATASET_STR-SEND2 sy-vline 
WA_HRB2A_S_DATASET_STR-SENT2 sy-vline 
WA_HRB2A_S_DATASET_STR-PBREAK sy-vline 
WA_HRB2A_S_DATASET_STR-STATUS sy-vline 
WA_HRB2A_S_DATASET_STR-SUBST sy-vline 
WA_HRB2A_S_DATASET_STR-SEQNO sy-vline 
WA_HRB2A_S_DATASET_STR-GDATE sy-vline 
WA_HRB2A_S_DATASET_STR-GTIME sy-vline 
WA_HRB2A_S_DATASET_STR-UNAME sy-vline 
WA_HRB2A_S_DATASET_STR-BMSID sy-vline 
WA_HRB2A_S_DATASET_STR-HISFL sy-vline      INTO ld_text SEPARATED BY SPACE.

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