ABAP Select data from SAP table BAPIAPLPER into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM BAPIAPLPER
*  INTO TABLE @DATA(IT_BAPIAPLPER2).
*--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_BAPIAPLPER INDEX 1 INTO DATA(WA_BAPIAPLPER2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<BAPIAPLPER>-FOA_KEY = 1.
<BAPIAPLPER>-F_NAME = 1.
<BAPIAPLPER>-L_NAME = 1.
<BAPIAPLPER>-BIRTHNAME = 1.
<BAPIAPLPER>-KNOWN_AS = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_BAPIAPLPER-SSN, sy-vline,
  WA_BAPIAPLPER-B_DATE, sy-vline,
  WA_BAPIAPLPER-TITLE, sy-vline,
  WA_BAPIAPLPER-2ND_TITLE, sy-vline,
  WA_BAPIAPLPER-ARI_TITLE, sy-vline,
  WA_BAPIAPLPER-AFFIX, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_BAPIAPLPER 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_BAPIAPLPER 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_BAPIAPLPER INTO WA_BAPIAPLPER.


*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 PDATE, internal->external for field B_DATE
CALL FUNCTION 'CONVERSION_EXIT_PDATE_OUTPUT'
  EXPORTING
    input =                      WA_BAPIAPLPER-B_DATE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BAPIAPLPER-B_DATE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ISOLA, internal->external for field LANGU
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_BAPIAPLPER-LANGU
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BAPIAPLPER-LANGU.
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_BAPIAPLPER_STR, 
FOA_KEY TYPE STRING,
F_NAME TYPE STRING,
L_NAME TYPE STRING,
BIRTHNAME TYPE STRING,
KNOWN_AS TYPE STRING,
SSN TYPE STRING,
B_DATE TYPE STRING,
TITLE TYPE STRING,
2ND_TITLE TYPE STRING,
ARI_TITLE TYPE STRING,
AFFIX TYPE STRING,
PREFIX_2 TYPE STRING,
GENDER TYPE STRING,
BIRTHPLACE TYPE STRING,
MAR_STAT TYPE STRING,
INITIALS TYPE STRING,
NATION TYPE STRING,
LANGU TYPE STRING,
ANZKD TYPE STRING,
LAST_NAME2 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_BAPIAPLPER_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_BAPIAPLPER_STR-FOA_KEY sy-vline 
WA_BAPIAPLPER_STR-F_NAME sy-vline 
WA_BAPIAPLPER_STR-L_NAME sy-vline 
WA_BAPIAPLPER_STR-BIRTHNAME sy-vline 
WA_BAPIAPLPER_STR-KNOWN_AS sy-vline 
WA_BAPIAPLPER_STR-SSN sy-vline 
WA_BAPIAPLPER_STR-B_DATE sy-vline 
WA_BAPIAPLPER_STR-TITLE sy-vline 
WA_BAPIAPLPER_STR-2ND_TITLE sy-vline 
WA_BAPIAPLPER_STR-ARI_TITLE sy-vline 
WA_BAPIAPLPER_STR-AFFIX sy-vline 
WA_BAPIAPLPER_STR-PREFIX_2 sy-vline 
WA_BAPIAPLPER_STR-GENDER sy-vline 
WA_BAPIAPLPER_STR-BIRTHPLACE sy-vline 
WA_BAPIAPLPER_STR-MAR_STAT sy-vline 
WA_BAPIAPLPER_STR-INITIALS sy-vline 
WA_BAPIAPLPER_STR-NATION sy-vline 
WA_BAPIAPLPER_STR-LANGU sy-vline 
WA_BAPIAPLPER_STR-ANZKD sy-vline 
WA_BAPIAPLPER_STR-LAST_NAME2 sy-vline      INTO ld_text SEPARATED BY SPACE.

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