ABAP Select data from SAP table PUNPAD_EGEXP into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PUNPAD_EGEXP
*  INTO TABLE @DATA(IT_PUNPAD_EGEXP2).
*--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_PUNPAD_EGEXP INDEX 1 INTO DATA(WA_PUNPAD_EGEXP2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PUNPAD_EGEXP>-EXLNR = 1.
<PUNPAD_EGEXP>-EXCOS = 1.
<PUNPAD_EGEXP>-EXART = 1.
<PUNPAD_EGEXP>-MWSKZ = 1.
<PUNPAD_EGEXP>-EXAMT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PUNPAD_EGEXP-EXAMT_E, sy-vline,
  WA_PUNPAD_EGEXP-EXDAT, sy-vline,
  WA_PUNPAD_EGEXP-EXEXT, sy-vline,
  WA_PUNPAD_EGEXP-WAERS, sy-vline,
  WA_PUNPAD_EGEXP-KURSB, sy-vline,
  WA_PUNPAD_EGEXP-FFACT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PUNPAD_EGEXP 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_PUNPAD_EGEXP 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_PUNPAD_EGEXP INTO WA_PUNPAD_EGEXP.


*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 EXCRT, internal->external for field KURSB
CALL FUNCTION 'CONVERSION_EXIT_EXCRT_OUTPUT'
  EXPORTING
    input =                      WA_PUNPAD_EGEXP-KURSB
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PUNPAD_EGEXP-KURSB.
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_PUNPAD_EGEXP_STR, 
EXLNR TYPE STRING,
EXCOS TYPE STRING,
EXART TYPE STRING,
MWSKZ TYPE STRING,
EXAMT TYPE STRING,
EXAMT_E TYPE STRING,
EXDAT TYPE STRING,
EXEXT TYPE STRING,
WAERS TYPE STRING,
KURSB TYPE STRING,
FFACT TYPE STRING,
TFACT TYPE STRING,
PAPER_RECEIPT TYPE STRING,
RECEIPT_VALIDATE TYPE STRING,
PAYCURR TYPE STRING,
FLAG TYPE STRING,
PFLAG TYPE STRING,
ADVFLAG TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PUNPAD_EGEXP_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_PUNPAD_EGEXP_STR-EXLNR sy-vline 
WA_PUNPAD_EGEXP_STR-EXCOS sy-vline 
WA_PUNPAD_EGEXP_STR-EXART sy-vline 
WA_PUNPAD_EGEXP_STR-MWSKZ sy-vline 
WA_PUNPAD_EGEXP_STR-EXAMT sy-vline 
WA_PUNPAD_EGEXP_STR-EXAMT_E sy-vline 
WA_PUNPAD_EGEXP_STR-EXDAT sy-vline 
WA_PUNPAD_EGEXP_STR-EXEXT sy-vline 
WA_PUNPAD_EGEXP_STR-WAERS sy-vline 
WA_PUNPAD_EGEXP_STR-KURSB sy-vline 
WA_PUNPAD_EGEXP_STR-FFACT sy-vline 
WA_PUNPAD_EGEXP_STR-TFACT sy-vline 
WA_PUNPAD_EGEXP_STR-PAPER_RECEIPT sy-vline 
WA_PUNPAD_EGEXP_STR-RECEIPT_VALIDATE sy-vline 
WA_PUNPAD_EGEXP_STR-PAYCURR sy-vline 
WA_PUNPAD_EGEXP_STR-FLAG sy-vline 
WA_PUNPAD_EGEXP_STR-PFLAG sy-vline 
WA_PUNPAD_EGEXP_STR-ADVFLAG sy-vline      INTO ld_text SEPARATED BY SPACE.

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