ABAP Select data from SAP table CATFSOLD into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CATFSOLD
*  INTO TABLE @DATA(IT_CATFSOLD2).
*--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_CATFSOLD INDEX 1 INTO DATA(WA_CATFSOLD2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CATFSOLD>-ABLNR = 1.
<CATFSOLD>-TFNAM = 1.
<CATFSOLD>-SDATE = 1.
<CATFSOLD>-STIME = 1.
<CATFSOLD>-KONTK = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CATFSOLD-LFDNR, sy-vline,
  WA_CATFSOLD-VARNT, sy-vline,
  WA_CATFSOLD-ERRCD, sy-vline,
  WA_CATFSOLD-MSGID, sy-vline,
  WA_CATFSOLD-MSGNR, sy-vline,
  WA_CATFSOLD-MSGTX, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CATFSOLD 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_CATFSOLD 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_CATFSOLD INTO WA_CATFSOLD.


*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_CATFSOLD_STR, 
ABLNR TYPE STRING,
TFNAM TYPE STRING,
SDATE TYPE STRING,
STIME TYPE STRING,
KONTK TYPE STRING,
LFDNR TYPE STRING,
VARNT TYPE STRING,
ERRCD TYPE STRING,
MSGID TYPE STRING,
MSGNR TYPE STRING,
MSGTX TYPE STRING,
PEX01 TYPE STRING,
PEX02 TYPE STRING,
PEX03 TYPE STRING,
PEX04 TYPE STRING,
PEX05 TYPE STRING,
PAR01 TYPE STRING,
PAR02 TYPE STRING,
PAR03 TYPE STRING,
PAR04 TYPE STRING,
PAR05 TYPE STRING,
PAR06 TYPE STRING,
PAR07 TYPE STRING,
PAR08 TYPE STRING,
PAR09 TYPE STRING,
PAR10 TYPE STRING,
PAR11 TYPE STRING,
PAR12 TYPE STRING,
PAR13 TYPE STRING,
PAR14 TYPE STRING,
PAR15 TYPE STRING,
PAR16 TYPE STRING,
PAR17 TYPE STRING,
PAR18 TYPE STRING,
PAR19 TYPE STRING,
PAR20 TYPE STRING,
PAR21 TYPE STRING,
PAR22 TYPE STRING,
PAR23 TYPE STRING,
PAR24 TYPE STRING,
PAR25 TYPE STRING,
PAR26 TYPE STRING,
PAR27 TYPE STRING,
PAR28 TYPE STRING,
PAR29 TYPE STRING,
PAR30 TYPE STRING,
DATEI TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CATFSOLD_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_CATFSOLD_STR-ABLNR sy-vline 
WA_CATFSOLD_STR-TFNAM sy-vline 
WA_CATFSOLD_STR-SDATE sy-vline 
WA_CATFSOLD_STR-STIME sy-vline 
WA_CATFSOLD_STR-KONTK sy-vline 
WA_CATFSOLD_STR-LFDNR sy-vline 
WA_CATFSOLD_STR-VARNT sy-vline 
WA_CATFSOLD_STR-ERRCD sy-vline 
WA_CATFSOLD_STR-MSGID sy-vline 
WA_CATFSOLD_STR-MSGNR sy-vline 
WA_CATFSOLD_STR-MSGTX sy-vline 
WA_CATFSOLD_STR-PEX01 sy-vline 
WA_CATFSOLD_STR-PEX02 sy-vline 
WA_CATFSOLD_STR-PEX03 sy-vline 
WA_CATFSOLD_STR-PEX04 sy-vline 
WA_CATFSOLD_STR-PEX05 sy-vline 
WA_CATFSOLD_STR-PAR01 sy-vline 
WA_CATFSOLD_STR-PAR02 sy-vline 
WA_CATFSOLD_STR-PAR03 sy-vline 
WA_CATFSOLD_STR-PAR04 sy-vline 
WA_CATFSOLD_STR-PAR05 sy-vline 
WA_CATFSOLD_STR-PAR06 sy-vline 
WA_CATFSOLD_STR-PAR07 sy-vline 
WA_CATFSOLD_STR-PAR08 sy-vline 
WA_CATFSOLD_STR-PAR09 sy-vline 
WA_CATFSOLD_STR-PAR10 sy-vline 
WA_CATFSOLD_STR-PAR11 sy-vline 
WA_CATFSOLD_STR-PAR12 sy-vline 
WA_CATFSOLD_STR-PAR13 sy-vline 
WA_CATFSOLD_STR-PAR14 sy-vline 
WA_CATFSOLD_STR-PAR15 sy-vline 
WA_CATFSOLD_STR-PAR16 sy-vline 
WA_CATFSOLD_STR-PAR17 sy-vline 
WA_CATFSOLD_STR-PAR18 sy-vline 
WA_CATFSOLD_STR-PAR19 sy-vline 
WA_CATFSOLD_STR-PAR20 sy-vline 
WA_CATFSOLD_STR-PAR21 sy-vline 
WA_CATFSOLD_STR-PAR22 sy-vline 
WA_CATFSOLD_STR-PAR23 sy-vline 
WA_CATFSOLD_STR-PAR24 sy-vline 
WA_CATFSOLD_STR-PAR25 sy-vline 
WA_CATFSOLD_STR-PAR26 sy-vline 
WA_CATFSOLD_STR-PAR27 sy-vline 
WA_CATFSOLD_STR-PAR28 sy-vline 
WA_CATFSOLD_STR-PAR29 sy-vline 
WA_CATFSOLD_STR-PAR30 sy-vline 
WA_CATFSOLD_STR-DATEI sy-vline      INTO ld_text SEPARATED BY SPACE.

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