ABAP Select data from SAP table PAE_HAEPWDF0_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_HAEPWDF0_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_HAEPWDF0_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_HAEPWDF0_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_HAEPWDF0_ALV TYPE STANDARD TABLE OF PAE_HAEPWDF0_ALV,
      WA_PAE_HAEPWDF0_ALV TYPE PAE_HAEPWDF0_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_HAEPWDF0_ALV> TYPE PAE_HAEPWDF0_ALV.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_PAE_HAEPWDF0_ALV.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM PAE_HAEPWDF0_ALV
  INTO TABLE IT_PAE_HAEPWDF0_ALV.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PAE_HAEPWDF0_ALV
*  INTO TABLE @DATA(IT_PAE_HAEPWDF0_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_HAEPWDF0_ALV INDEX 1 INTO DATA(WA_PAE_HAEPWDF0_ALV2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_PAE_HAEPWDF0_ALV ASSIGNING <PAE_HAEPWDF0_ALV>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PAE_HAEPWDF0_ALV>-ABKRS = 1.
<PAE_HAEPWDF0_ALV>-PERNR = 1.
<PAE_HAEPWDF0_ALV>-FNAME = 1.
<PAE_HAEPWDF0_ALV>-SINUM = 1.
<PAE_HAEPWDF0_ALV>-WAGE1 = 1.

ENDLOOP.

LOOP AT IT_PAE_HAEPWDF0_ALV INTO WA_PAE_HAEPWDF0_ALV.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PAE_HAEPWDF0_ALV-AMNT1, sy-vline,
  WA_PAE_HAEPWDF0_ALV-WAGE2, sy-vline,
  WA_PAE_HAEPWDF0_ALV-AMNT2, sy-vline,
  WA_PAE_HAEPWDF0_ALV-WAGE3, sy-vline,
  WA_PAE_HAEPWDF0_ALV-AMNT3, sy-vline,
  WA_PAE_HAEPWDF0_ALV-WAGE4, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PAE_HAEPWDF0_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_HAEPWDF0_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_HAEPWDF0_ALV INTO WA_PAE_HAEPWDF0_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.
ENDFORM. 

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

TYPES: BEGIN OF T_PAE_HAEPWDF0_ALV_STR, 
ABKRS TYPE STRING,
PERNR TYPE STRING,
FNAME TYPE STRING,
SINUM TYPE STRING,
WAGE1 TYPE STRING,
AMNT1 TYPE STRING,
WAGE2 TYPE STRING,
AMNT2 TYPE STRING,
WAGE3 TYPE STRING,
AMNT3 TYPE STRING,
WAGE4 TYPE STRING,
AMNT4 TYPE STRING,
WAGE5 TYPE STRING,
AMNT5 TYPE STRING,
WAGE6 TYPE STRING,
AMNT6 TYPE STRING,
WAGE7 TYPE STRING,
AMNT7 TYPE STRING,
TOTAL TYPE STRING,
COMNM TYPE STRING,
COMNR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PAE_HAEPWDF0_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_HAEPWDF0_ALV_STR-ABKRS sy-vline 
WA_PAE_HAEPWDF0_ALV_STR-PERNR sy-vline 
WA_PAE_HAEPWDF0_ALV_STR-FNAME sy-vline 
WA_PAE_HAEPWDF0_ALV_STR-SINUM sy-vline 
WA_PAE_HAEPWDF0_ALV_STR-WAGE1 sy-vline 
WA_PAE_HAEPWDF0_ALV_STR-AMNT1 sy-vline 
WA_PAE_HAEPWDF0_ALV_STR-WAGE2 sy-vline 
WA_PAE_HAEPWDF0_ALV_STR-AMNT2 sy-vline 
WA_PAE_HAEPWDF0_ALV_STR-WAGE3 sy-vline 
WA_PAE_HAEPWDF0_ALV_STR-AMNT3 sy-vline 
WA_PAE_HAEPWDF0_ALV_STR-WAGE4 sy-vline 
WA_PAE_HAEPWDF0_ALV_STR-AMNT4 sy-vline 
WA_PAE_HAEPWDF0_ALV_STR-WAGE5 sy-vline 
WA_PAE_HAEPWDF0_ALV_STR-AMNT5 sy-vline 
WA_PAE_HAEPWDF0_ALV_STR-WAGE6 sy-vline 
WA_PAE_HAEPWDF0_ALV_STR-AMNT6 sy-vline 
WA_PAE_HAEPWDF0_ALV_STR-WAGE7 sy-vline 
WA_PAE_HAEPWDF0_ALV_STR-AMNT7 sy-vline 
WA_PAE_HAEPWDF0_ALV_STR-TOTAL sy-vline 
WA_PAE_HAEPWDF0_ALV_STR-COMNM sy-vline 
WA_PAE_HAEPWDF0_ALV_STR-COMNR sy-vline      INTO ld_text SEPARATED BY SPACE.

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