ABAP Select data from SAP table P39_CCAF into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP P39_CCAF 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 P39_CCAF. 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 P39_CCAF 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_P39_CCAF TYPE STANDARD TABLE OF P39_CCAF,
      WA_P39_CCAF TYPE P39_CCAF,
      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: <P39_CCAF> TYPE P39_CCAF.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_P39_CCAF.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM P39_CCAF
  INTO TABLE IT_P39_CCAF.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM P39_CCAF
*  INTO TABLE @DATA(IT_P39_CCAF2).
*--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_P39_CCAF INDEX 1 INTO DATA(WA_P39_CCAF2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_P39_CCAF ASSIGNING <P39_CCAF>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<P39_CCAF>-INSCD = 1.
<P39_CCAF>-INSTX = 1.
<P39_CCAF>-PERNR = 1.
<P39_CCAF>-RUTEE = 1.
<P39_CCAF>-VORNA = 1.

ENDLOOP.

LOOP AT IT_P39_CCAF INTO WA_P39_CCAF.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_P39_CCAF-NACHN, sy-vline,
  WA_P39_CCAF-NACH2, sy-vline,
  WA_P39_CCAF-GESCH, sy-vline,
  WA_P39_CCAF-CNAME, sy-vline,
  WA_P39_CCAF-NATIO, sy-vline,
  WA_P39_CCAF-RIAIS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_P39_CCAF 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_P39_CCAF 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_P39_CCAF INTO WA_P39_CCAF.


*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_P39_CCAF_STR, 
INSCD TYPE STRING,
INSTX TYPE STRING,
PERNR TYPE STRING,
RUTEE TYPE STRING,
VORNA TYPE STRING,
NACHN TYPE STRING,
NACH2 TYPE STRING,
GESCH TYPE STRING,
CNAME TYPE STRING,
NATIO TYPE STRING,
RIAIS TYPE STRING,
RINIS TYPE STRING,
CTCCF TYPE STRING,
DIAST TYPE STRING,
NRCFS TYPE STRING,
NRCFI TYPE STRING,
NRCFM TYPE STRING,
MTASF TYPE STRING,
TRAMO TYPE STRING,
CODMV TYPE STRING,
BEGDA TYPE STRING,
ENDDA TYPE STRING,
RUTEP TYPE STRING,
FLGIS TYPE STRING,
CRDSC TYPE STRING,
FAHOR TYPE STRING,
SGRCN TYPE STRING,
SLPRE TYPE STRING,
WAERS TYPE STRING,
NCSRT TYPE STRING,
NCIRT TYPE STRING,
NCMRT TYPE STRING,
MTART TYPE STRING,
NCSRE TYPE STRING,
NCIRE TYPE STRING,
NCMRE TYPE STRING,
MTARE TYPE STRING,
NCSRC TYPE STRING,
NCIRC TYPE STRING,
NCMRC TYPE STRING,
MTARC TYPE STRING,
NCSSL TYPE STRING,
NCISL TYPE STRING,
NCMSL TYPE STRING,
MTASL TYPE STRING,END OF T_EKKO_STR.
DATA: WA_P39_CCAF_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_P39_CCAF_STR-INSCD sy-vline 
WA_P39_CCAF_STR-INSTX sy-vline 
WA_P39_CCAF_STR-PERNR sy-vline 
WA_P39_CCAF_STR-RUTEE sy-vline 
WA_P39_CCAF_STR-VORNA sy-vline 
WA_P39_CCAF_STR-NACHN sy-vline 
WA_P39_CCAF_STR-NACH2 sy-vline 
WA_P39_CCAF_STR-GESCH sy-vline 
WA_P39_CCAF_STR-CNAME sy-vline 
WA_P39_CCAF_STR-NATIO sy-vline 
WA_P39_CCAF_STR-RIAIS sy-vline 
WA_P39_CCAF_STR-RINIS sy-vline 
WA_P39_CCAF_STR-CTCCF sy-vline 
WA_P39_CCAF_STR-DIAST sy-vline 
WA_P39_CCAF_STR-NRCFS sy-vline 
WA_P39_CCAF_STR-NRCFI sy-vline 
WA_P39_CCAF_STR-NRCFM sy-vline 
WA_P39_CCAF_STR-MTASF sy-vline 
WA_P39_CCAF_STR-TRAMO sy-vline 
WA_P39_CCAF_STR-CODMV sy-vline 
WA_P39_CCAF_STR-BEGDA sy-vline 
WA_P39_CCAF_STR-ENDDA sy-vline 
WA_P39_CCAF_STR-RUTEP sy-vline 
WA_P39_CCAF_STR-FLGIS sy-vline 
WA_P39_CCAF_STR-CRDSC sy-vline 
WA_P39_CCAF_STR-FAHOR sy-vline 
WA_P39_CCAF_STR-SGRCN sy-vline 
WA_P39_CCAF_STR-SLPRE sy-vline 
WA_P39_CCAF_STR-WAERS sy-vline 
WA_P39_CCAF_STR-NCSRT sy-vline 
WA_P39_CCAF_STR-NCIRT sy-vline 
WA_P39_CCAF_STR-NCMRT sy-vline 
WA_P39_CCAF_STR-MTART sy-vline 
WA_P39_CCAF_STR-NCSRE sy-vline 
WA_P39_CCAF_STR-NCIRE sy-vline 
WA_P39_CCAF_STR-NCMRE sy-vline 
WA_P39_CCAF_STR-MTARE sy-vline 
WA_P39_CCAF_STR-NCSRC sy-vline 
WA_P39_CCAF_STR-NCIRC sy-vline 
WA_P39_CCAF_STR-NCMRC sy-vline 
WA_P39_CCAF_STR-MTARC sy-vline 
WA_P39_CCAF_STR-NCSSL sy-vline 
WA_P39_CCAF_STR-NCISL sy-vline 
WA_P39_CCAF_STR-NCMSL sy-vline 
WA_P39_CCAF_STR-MTASL sy-vline      INTO ld_text SEPARATED BY SPACE.

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