ABAP Select data from SAP table DTAXGBH1 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP DTAXGBH1 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 DTAXGBH1. 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 DTAXGBH1 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_DTAXGBH1 TYPE STANDARD TABLE OF DTAXGBH1,
      WA_DTAXGBH1 TYPE DTAXGBH1,
      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: <DTAXGBH1> TYPE DTAXGBH1.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_DTAXGBH1.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM DTAXGBH1
  INTO TABLE IT_DTAXGBH1.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM DTAXGBH1
*  INTO TABLE @DATA(IT_DTAXGBH12).
*--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_DTAXGBH1 INDEX 1 INTO DATA(WA_DTAXGBH12).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_DTAXGBH1 ASSIGNING <DTAXGBH1>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<DTAXGBH1>-LABID = 1.
<DTAXGBH1>-LABNO = 1.
<DTAXGBH1>-FILLA = 1.
<DTAXGBH1>-USERN = 1.
<DTAXGBH1>-FILLS = 1.

ENDLOOP.

LOOP AT IT_DTAXGBH1 INTO WA_DTAXGBH1.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_DTAXGBH1-FILL1, sy-vline,
  WA_DTAXGBH1-FLNUM, sy-vline,
  WA_DTAXGBH1-USER2, sy-vline,
  WA_DTAXGBH1-VOLSN, sy-vline,
  WA_DTAXGBH1-FLSEC, sy-vline,
  WA_DTAXGBH1-FLSQN, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_DTAXGBH1 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_DTAXGBH1 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_DTAXGBH1 INTO WA_DTAXGBH1.


*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.
ENDFORM. 

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

TYPES: BEGIN OF T_DTAXGBH1_STR, 
LABID TYPE STRING,
LABNO TYPE STRING,
FILLA TYPE STRING,
USERN TYPE STRING,
FILLS TYPE STRING,
FILL1 TYPE STRING,
FLNUM TYPE STRING,
USER2 TYPE STRING,
VOLSN TYPE STRING,
FLSEC TYPE STRING,
FLSQN TYPE STRING,
GENNO TYPE STRING,
GENVN TYPE STRING,
CREDA TYPE STRING,
EXPDA TYPE STRING,
ACCID TYPE STRING,
BLCNT TYPE STRING,
SYSTC TYPE STRING,
FILL2 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_DTAXGBH1_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_DTAXGBH1_STR-LABID sy-vline 
WA_DTAXGBH1_STR-LABNO sy-vline 
WA_DTAXGBH1_STR-FILLA sy-vline 
WA_DTAXGBH1_STR-USERN sy-vline 
WA_DTAXGBH1_STR-FILLS sy-vline 
WA_DTAXGBH1_STR-FILL1 sy-vline 
WA_DTAXGBH1_STR-FLNUM sy-vline 
WA_DTAXGBH1_STR-USER2 sy-vline 
WA_DTAXGBH1_STR-VOLSN sy-vline 
WA_DTAXGBH1_STR-FLSEC sy-vline 
WA_DTAXGBH1_STR-FLSQN sy-vline 
WA_DTAXGBH1_STR-GENNO sy-vline 
WA_DTAXGBH1_STR-GENVN sy-vline 
WA_DTAXGBH1_STR-CREDA sy-vline 
WA_DTAXGBH1_STR-EXPDA sy-vline 
WA_DTAXGBH1_STR-ACCID sy-vline 
WA_DTAXGBH1_STR-BLCNT sy-vline 
WA_DTAXGBH1_STR-SYSTC sy-vline 
WA_DTAXGBH1_STR-FILL2 sy-vline      INTO ld_text SEPARATED BY SPACE.

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