ABAP Select data from SAP table PAE_HAEPSOS0_ALV into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP PAE_HAEPSOS0_ALV 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 PAE_HAEPSOS0_ALV. 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 PAE_HAEPSOS0_ALV 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_PAE_HAEPSOS0_ALV TYPE STANDARD TABLE OF PAE_HAEPSOS0_ALV,
      WA_PAE_HAEPSOS0_ALV TYPE PAE_HAEPSOS0_ALV,
      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: <PAE_HAEPSOS0_ALV> TYPE PAE_HAEPSOS0_ALV.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_PAE_HAEPSOS0_ALV.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM PAE_HAEPSOS0_ALV
  INTO TABLE IT_PAE_HAEPSOS0_ALV.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PAE_HAEPSOS0_ALV
*  INTO TABLE @DATA(IT_PAE_HAEPSOS0_ALV2).
*--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_PAE_HAEPSOS0_ALV INDEX 1 INTO DATA(WA_PAE_HAEPSOS0_ALV2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_PAE_HAEPSOS0_ALV ASSIGNING <PAE_HAEPSOS0_ALV>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PAE_HAEPSOS0_ALV>-PERNR = 1.
<PAE_HAEPSOS0_ALV>-FNAME = 1.
<PAE_HAEPSOS0_ALV>-GNDER = 1.
<PAE_HAEPSOS0_ALV>-FATXT = 1.
<PAE_HAEPSOS0_ALV>-GPSER = 1.

ENDLOOP.

LOOP AT IT_PAE_HAEPSOS0_ALV INTO WA_PAE_HAEPSOS0_ALV.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PAE_HAEPSOS0_ALV-AEPPM, sy-vline,
  WA_PAE_HAEPSOS0_ALV-SINUM, sy-vline,
  WA_PAE_HAEPSOS0_ALV-BUKRS, sy-vline,
  WA_PAE_HAEPSOS0_ALV-POBOX, sy-vline,
  WA_PAE_HAEPSOS0_ALV-TELNO, sy-vline,
  WA_PAE_HAEPSOS0_ALV-FAXNO, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PAE_HAEPSOS0_ALV 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_PAE_HAEPSOS0_ALV 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_PAE_HAEPSOS0_ALV INTO WA_PAE_HAEPSOS0_ALV.


*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 GBDAT
CALL FUNCTION 'CONVERSION_EXIT_PDATE_OUTPUT'
  EXPORTING
    input =                      WA_PAE_HAEPSOS0_ALV-GBDAT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PAE_HAEPSOS0_ALV-GBDAT.
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_PAE_HAEPSOS0_ALV_STR, 
PERNR TYPE STRING,
FNAME TYPE STRING,
GNDER TYPE STRING,
FATXT TYPE STRING,
GPSER TYPE STRING,
AEPPM TYPE STRING,
SINUM TYPE STRING,
BUKRS TYPE STRING,
POBOX TYPE STRING,
TELNO TYPE STRING,
FAXNO TYPE STRING,
NATIO TYPE STRING,
GBDAT TYPE STRING,
ECITY TYPE STRING,
STEXT TYPE STRING,
ATEXT TYPE STRING,
AECTX TYPE STRING,
PZCHY TYPE STRING,
PZCHN TYPE STRING,
ARBGB TYPE STRING,
PORAN TYPE STRING,
SLABS TYPE STRING,
INSTI TYPE STRING,
AUSBI TYPE STRING,
ADRES TYPE STRING,
TELNR TYPE STRING,
FAXPM TYPE STRING,
GESCH TYPE STRING,
BIRCT TYPE STRING,
NATRN TYPE STRING,
FAMST TYPE STRING,
SPONO TYPE STRING,
FENMO TYPE STRING,
FMNMO TYPE STRING,
ACDDG TYPE STRING,
EMPLR TYPE STRING,
SPECL TYPE STRING,
SADXT TYPE STRING,
SPEXT TYPE STRING,
AETXT TYPE STRING,
ABKRS TYPE STRING,
WDATE TYPE STRING,
SDATE TYPE STRING,
PDATE TYPE STRING,
TDATE TYPE STRING,
NATDT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PAE_HAEPSOS0_ALV_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_PAE_HAEPSOS0_ALV_STR-PERNR sy-vline 
WA_PAE_HAEPSOS0_ALV_STR-FNAME sy-vline 
WA_PAE_HAEPSOS0_ALV_STR-GNDER sy-vline 
WA_PAE_HAEPSOS0_ALV_STR-FATXT sy-vline 
WA_PAE_HAEPSOS0_ALV_STR-GPSER sy-vline 
WA_PAE_HAEPSOS0_ALV_STR-AEPPM sy-vline 
WA_PAE_HAEPSOS0_ALV_STR-SINUM sy-vline 
WA_PAE_HAEPSOS0_ALV_STR-BUKRS sy-vline 
WA_PAE_HAEPSOS0_ALV_STR-POBOX sy-vline 
WA_PAE_HAEPSOS0_ALV_STR-TELNO sy-vline 
WA_PAE_HAEPSOS0_ALV_STR-FAXNO sy-vline 
WA_PAE_HAEPSOS0_ALV_STR-NATIO sy-vline 
WA_PAE_HAEPSOS0_ALV_STR-GBDAT sy-vline 
WA_PAE_HAEPSOS0_ALV_STR-ECITY sy-vline 
WA_PAE_HAEPSOS0_ALV_STR-STEXT sy-vline 
WA_PAE_HAEPSOS0_ALV_STR-ATEXT sy-vline 
WA_PAE_HAEPSOS0_ALV_STR-AECTX sy-vline 
WA_PAE_HAEPSOS0_ALV_STR-PZCHY sy-vline 
WA_PAE_HAEPSOS0_ALV_STR-PZCHN sy-vline 
WA_PAE_HAEPSOS0_ALV_STR-ARBGB sy-vline 
WA_PAE_HAEPSOS0_ALV_STR-PORAN sy-vline 
WA_PAE_HAEPSOS0_ALV_STR-SLABS sy-vline 
WA_PAE_HAEPSOS0_ALV_STR-INSTI sy-vline 
WA_PAE_HAEPSOS0_ALV_STR-AUSBI sy-vline 
WA_PAE_HAEPSOS0_ALV_STR-ADRES sy-vline 
WA_PAE_HAEPSOS0_ALV_STR-TELNR sy-vline 
WA_PAE_HAEPSOS0_ALV_STR-FAXPM sy-vline 
WA_PAE_HAEPSOS0_ALV_STR-GESCH sy-vline 
WA_PAE_HAEPSOS0_ALV_STR-BIRCT sy-vline 
WA_PAE_HAEPSOS0_ALV_STR-NATRN sy-vline 
WA_PAE_HAEPSOS0_ALV_STR-FAMST sy-vline 
WA_PAE_HAEPSOS0_ALV_STR-SPONO sy-vline 
WA_PAE_HAEPSOS0_ALV_STR-FENMO sy-vline 
WA_PAE_HAEPSOS0_ALV_STR-FMNMO sy-vline 
WA_PAE_HAEPSOS0_ALV_STR-ACDDG sy-vline 
WA_PAE_HAEPSOS0_ALV_STR-EMPLR sy-vline 
WA_PAE_HAEPSOS0_ALV_STR-SPECL sy-vline 
WA_PAE_HAEPSOS0_ALV_STR-SADXT sy-vline 
WA_PAE_HAEPSOS0_ALV_STR-SPEXT sy-vline 
WA_PAE_HAEPSOS0_ALV_STR-AETXT sy-vline 
WA_PAE_HAEPSOS0_ALV_STR-ABKRS sy-vline 
WA_PAE_HAEPSOS0_ALV_STR-WDATE sy-vline 
WA_PAE_HAEPSOS0_ALV_STR-SDATE sy-vline 
WA_PAE_HAEPSOS0_ALV_STR-PDATE sy-vline 
WA_PAE_HAEPSOS0_ALV_STR-TDATE sy-vline 
WA_PAE_HAEPSOS0_ALV_STR-NATDT sy-vline      INTO ld_text SEPARATED BY SPACE.

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