ABAP Select data from SAP table PESFANEDL into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PESFANEDL
*  INTO TABLE @DATA(IT_PESFANEDL2).
*--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_PESFANEDL INDEX 1 INTO DATA(WA_PESFANEDL2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PESFANEDL>-CABECERA = 1.
<PESFANEDL>-TIPO = 1.
<PESFANEDL>-CLAVE = 1.
<PESFANEDL>-ELEMENTO = 1.
<PESFANEDL>-IMPORTE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PESFANEDL-SIGNO, sy-vline,
  WA_PESFANEDL-TIP2, sy-vline,
  WA_PESFANEDL-RESOLU, sy-vline,
  WA_PESFANEDL-INI_PER, sy-vline,
  WA_PESFANEDL-FIN_PER, sy-vline,
  WA_PESFANEDL-REFERENC, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PESFANEDL 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_PESFANEDL 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_PESFANEDL INTO WA_PESFANEDL.


*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_PESFANEDL_STR, 
CABECERA TYPE STRING,
TIPO TYPE STRING,
CLAVE TYPE STRING,
ELEMENTO TYPE STRING,
IMPORTE TYPE STRING,
SIGNO TYPE STRING,
TIP2 TYPE STRING,
RESOLU TYPE STRING,
INI_PER TYPE STRING,
FIN_PER TYPE STRING,
REFERENC TYPE STRING,
RESERVADO TYPE STRING,
CA31I TYPE STRING,
CA31S TYPE STRING,
CA32I TYPE STRING,
CA32S TYPE STRING,
CA50I TYPE STRING,
CA50S TYPE STRING,
CA57I TYPE STRING,
CA57S TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PESFANEDL_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_PESFANEDL_STR-CABECERA sy-vline 
WA_PESFANEDL_STR-TIPO sy-vline 
WA_PESFANEDL_STR-CLAVE sy-vline 
WA_PESFANEDL_STR-ELEMENTO sy-vline 
WA_PESFANEDL_STR-IMPORTE sy-vline 
WA_PESFANEDL_STR-SIGNO sy-vline 
WA_PESFANEDL_STR-TIP2 sy-vline 
WA_PESFANEDL_STR-RESOLU sy-vline 
WA_PESFANEDL_STR-INI_PER sy-vline 
WA_PESFANEDL_STR-FIN_PER sy-vline 
WA_PESFANEDL_STR-REFERENC sy-vline 
WA_PESFANEDL_STR-RESERVADO sy-vline 
WA_PESFANEDL_STR-CA31I sy-vline 
WA_PESFANEDL_STR-CA31S sy-vline 
WA_PESFANEDL_STR-CA32I sy-vline 
WA_PESFANEDL_STR-CA32S sy-vline 
WA_PESFANEDL_STR-CA50I sy-vline 
WA_PESFANEDL_STR-CA50S sy-vline 
WA_PESFANEDL_STR-CA57I sy-vline 
WA_PESFANEDL_STR-CA57S sy-vline      INTO ld_text SEPARATED BY SPACE.

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