ABAP Select data from SAP table BAPIACHE3X_MAX_DE into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP BAPIACHE3X_MAX_DE 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 BAPIACHE3X_MAX_DE. 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 BAPIACHE3X_MAX_DE 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_BAPIACHE3X_MAX_DE TYPE STANDARD TABLE OF BAPIACHE3X_MAX_DE,
      WA_BAPIACHE3X_MAX_DE TYPE BAPIACHE3X_MAX_DE,
      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: <BAPIACHE3X_MAX_DE> TYPE BAPIACHE3X_MAX_DE.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_BAPIACHE3X_MAX_DE.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM BAPIACHE3X_MAX_DE
  INTO TABLE IT_BAPIACHE3X_MAX_DE.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM BAPIACHE3X_MAX_DE
*  INTO TABLE @DATA(IT_BAPIACHE3X_MAX_DE2).
*--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_BAPIACHE3X_MAX_DE INDEX 1 INTO DATA(WA_BAPIACHE3X_MAX_DE2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_BAPIACHE3X_MAX_DE ASSIGNING <BAPIACHE3X_MAX_DE>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<BAPIACHE3X_MAX_DE>-AWTYP = 1.
<BAPIACHE3X_MAX_DE>-AWKEY = 1.
<BAPIACHE3X_MAX_DE>-AWSYS = 1.
<BAPIACHE3X_MAX_DE>-AWREF_REV = 1.
<BAPIACHE3X_MAX_DE>-AWORG_REV = 1.

ENDLOOP.

LOOP AT IT_BAPIACHE3X_MAX_DE INTO WA_BAPIACHE3X_MAX_DE.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_BAPIACHE3X_MAX_DE-USNAM, sy-vline,
  WA_BAPIACHE3X_MAX_DE-BKTXT, sy-vline,
  WA_BAPIACHE3X_MAX_DE-AWKEY_REV, sy-vline,
  WA_BAPIACHE3X_MAX_DE-BUKRS, sy-vline,
  WA_BAPIACHE3X_MAX_DE-BELNR, sy-vline,
  WA_BAPIACHE3X_MAX_DE-GJAHR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_BAPIACHE3X_MAX_DE 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_BAPIACHE3X_MAX_DE 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_BAPIACHE3X_MAX_DE INTO WA_BAPIACHE3X_MAX_DE.


*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 AWSYS
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_BAPIACHE3X_MAX_DE-AWSYS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BAPIACHE3X_MAX_DE-AWSYS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field AWREF_REV
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_BAPIACHE3X_MAX_DE-AWREF_REV
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BAPIACHE3X_MAX_DE-AWREF_REV.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field BELNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_BAPIACHE3X_MAX_DE-BELNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BAPIACHE3X_MAX_DE-BELNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field GJAHR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_BAPIACHE3X_MAX_DE-GJAHR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BAPIACHE3X_MAX_DE-GJAHR.
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_BAPIACHE3X_MAX_DE_STR, 
AWTYP TYPE STRING,
AWKEY TYPE STRING,
AWSYS TYPE STRING,
AWREF_REV TYPE STRING,
AWORG_REV TYPE STRING,
USNAM TYPE STRING,
BKTXT TYPE STRING,
AWKEY_REV TYPE STRING,
BUKRS TYPE STRING,
BELNR TYPE STRING,
GJAHR TYPE STRING,
BLDAT TYPE STRING,
BUDAT TYPE STRING,
WWERT TYPE STRING,
MONAT TYPE STRING,
BLART TYPE STRING,
XBLNR TYPE STRING,
COMPO_ACC TYPE STRING,
STGRD TYPE STRING,
BARCD TYPE STRING,END OF T_EKKO_STR.
DATA: WA_BAPIACHE3X_MAX_DE_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_BAPIACHE3X_MAX_DE_STR-AWTYP sy-vline 
WA_BAPIACHE3X_MAX_DE_STR-AWKEY sy-vline 
WA_BAPIACHE3X_MAX_DE_STR-AWSYS sy-vline 
WA_BAPIACHE3X_MAX_DE_STR-AWREF_REV sy-vline 
WA_BAPIACHE3X_MAX_DE_STR-AWORG_REV sy-vline 
WA_BAPIACHE3X_MAX_DE_STR-USNAM sy-vline 
WA_BAPIACHE3X_MAX_DE_STR-BKTXT sy-vline 
WA_BAPIACHE3X_MAX_DE_STR-AWKEY_REV sy-vline 
WA_BAPIACHE3X_MAX_DE_STR-BUKRS sy-vline 
WA_BAPIACHE3X_MAX_DE_STR-BELNR sy-vline 
WA_BAPIACHE3X_MAX_DE_STR-GJAHR sy-vline 
WA_BAPIACHE3X_MAX_DE_STR-BLDAT sy-vline 
WA_BAPIACHE3X_MAX_DE_STR-BUDAT sy-vline 
WA_BAPIACHE3X_MAX_DE_STR-WWERT sy-vline 
WA_BAPIACHE3X_MAX_DE_STR-MONAT sy-vline 
WA_BAPIACHE3X_MAX_DE_STR-BLART sy-vline 
WA_BAPIACHE3X_MAX_DE_STR-XBLNR sy-vline 
WA_BAPIACHE3X_MAX_DE_STR-COMPO_ACC sy-vline 
WA_BAPIACHE3X_MAX_DE_STR-STGRD sy-vline 
WA_BAPIACHE3X_MAX_DE_STR-BARCD sy-vline      INTO ld_text SEPARATED BY SPACE.

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