ABAP Select data from SAP table T74FF into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP T74FF 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 T74FF. 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 T74FF 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_T74FF TYPE STANDARD TABLE OF T74FF,
      WA_T74FF TYPE T74FF,
      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: <T74FF> TYPE T74FF.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_T74FF.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM T74FF
  INTO TABLE IT_T74FF.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM T74FF
*  INTO TABLE @DATA(IT_T74FF2).
*--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_T74FF INDEX 1 INTO DATA(WA_T74FF2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_T74FF ASSIGNING <T74FF>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<T74FF>-MANDT = 1.
<T74FF>-BAREA = 1.
<T74FF>-BPLAN = 1.
<T74FF>-ERCON = 1.
<T74FF>-SALGR = 1.

ENDLOOP.

LOOP AT IT_T74FF INTO WA_T74FF.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_T74FF-AGEGR, sy-vline,
  WA_T74FF-LOSGR, sy-vline,
  WA_T74FF-ERCGR, sy-vline,
  WA_T74FF-SEQNO, sy-vline,
  WA_T74FF-ENDDA, sy-vline,
  WA_T74FF-BEGDA, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_T74FF 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_T74FF 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_T74FF INTO WA_T74FF.


*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_T74FF_STR, 
MANDT TYPE STRING,
BAREA TYPE STRING,
BPLAN TYPE STRING,
ERCON TYPE STRING,
SALGR TYPE STRING,
AGEGR TYPE STRING,
LOSGR TYPE STRING,
ERCGR TYPE STRING,
SEQNO TYPE STRING,
ENDDA TYPE STRING,
BEGDA TYPE STRING,
CNIND TYPE STRING,
CNAMT TYPE STRING,
CNAPU TYPE STRING,
CNPCT TYPE STRING,
CNBIN TYPE STRING,
LMIND TYPE STRING,
LMAMT TYPE STRING,
LMAPU TYPE STRING,
LMPCT TYPE STRING,
LMBIN TYPE STRING,
ERCRL TYPE STRING,
ERCRN TYPE STRING,
EECTX TYPE STRING,
CNPPC TYPE STRING,
LMPPC TYPE STRING,END OF T_EKKO_STR.
DATA: WA_T74FF_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_T74FF_STR-MANDT sy-vline 
WA_T74FF_STR-BAREA sy-vline 
WA_T74FF_STR-BPLAN sy-vline 
WA_T74FF_STR-ERCON sy-vline 
WA_T74FF_STR-SALGR sy-vline 
WA_T74FF_STR-AGEGR sy-vline 
WA_T74FF_STR-LOSGR sy-vline 
WA_T74FF_STR-ERCGR sy-vline 
WA_T74FF_STR-SEQNO sy-vline 
WA_T74FF_STR-ENDDA sy-vline 
WA_T74FF_STR-BEGDA sy-vline 
WA_T74FF_STR-CNIND sy-vline 
WA_T74FF_STR-CNAMT sy-vline 
WA_T74FF_STR-CNAPU sy-vline 
WA_T74FF_STR-CNPCT sy-vline 
WA_T74FF_STR-CNBIN sy-vline 
WA_T74FF_STR-LMIND sy-vline 
WA_T74FF_STR-LMAMT sy-vline 
WA_T74FF_STR-LMAPU sy-vline 
WA_T74FF_STR-LMPCT sy-vline 
WA_T74FF_STR-LMBIN sy-vline 
WA_T74FF_STR-ERCRL sy-vline 
WA_T74FF_STR-ERCRN sy-vline 
WA_T74FF_STR-EECTX sy-vline 
WA_T74FF_STR-CNPPC sy-vline 
WA_T74FF_STR-LMPPC sy-vline      INTO ld_text SEPARATED BY SPACE.

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