ABAP Select data from SAP table T74FE into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP T74FE 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 T74FE. 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 T74FE 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_T74FE TYPE STANDARD TABLE OF T74FE,
      WA_T74FE TYPE T74FE,
      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: <T74FE> TYPE T74FE.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_T74FE.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM T74FE
  INTO TABLE IT_T74FE.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM T74FE
*  INTO TABLE @DATA(IT_T74FE2).
*--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_T74FE INDEX 1 INTO DATA(WA_T74FE2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_T74FE ASSIGNING <T74FE>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<T74FE>-MANDT = 1.
<T74FE>-BAREA = 1.
<T74FE>-BPLAN = 1.
<T74FE>-ERCON = 1.
<T74FE>-PERIO = 1.

ENDLOOP.

LOOP AT IT_T74FE INTO WA_T74FE.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_T74FE-ERCIN, sy-vline,
  WA_T74FE-SALIN, sy-vline,
  WA_T74FE-AGEIN, sy-vline,
  WA_T74FE-LOSIN, sy-vline,
  WA_T74FE-CRGRP, sy-vline,
  WA_T74FE-SALMO, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_T74FE 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_T74FE 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_T74FE INTO WA_T74FE.


*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_T74FE_STR, 
MANDT TYPE STRING,
BAREA TYPE STRING,
BPLAN TYPE STRING,
ERCON TYPE STRING,
PERIO TYPE STRING,
ERCIN TYPE STRING,
SALIN TYPE STRING,
AGEIN TYPE STRING,
LOSIN TYPE STRING,
CRGRP TYPE STRING,
SALMO TYPE STRING,
SALDY TYPE STRING,
AGEMO TYPE STRING,
AGEDY TYPE STRING,
SRVMO TYPE STRING,
SRVDY TYPE STRING,
DATTY TYPE STRING,
ENDTY TYPE STRING,
BSALM TYPE STRING,
BSALD TYPE STRING,
WAINU TYPE STRING,
WAIUN TYPE STRING,
CODAY TYPE STRING,
COINT TYPE STRING,
WDTTY TYPE STRING,
PERUL TYPE STRING,END OF T_EKKO_STR.
DATA: WA_T74FE_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_T74FE_STR-MANDT sy-vline 
WA_T74FE_STR-BAREA sy-vline 
WA_T74FE_STR-BPLAN sy-vline 
WA_T74FE_STR-ERCON sy-vline 
WA_T74FE_STR-PERIO sy-vline 
WA_T74FE_STR-ERCIN sy-vline 
WA_T74FE_STR-SALIN sy-vline 
WA_T74FE_STR-AGEIN sy-vline 
WA_T74FE_STR-LOSIN sy-vline 
WA_T74FE_STR-CRGRP sy-vline 
WA_T74FE_STR-SALMO sy-vline 
WA_T74FE_STR-SALDY sy-vline 
WA_T74FE_STR-AGEMO sy-vline 
WA_T74FE_STR-AGEDY sy-vline 
WA_T74FE_STR-SRVMO sy-vline 
WA_T74FE_STR-SRVDY sy-vline 
WA_T74FE_STR-DATTY sy-vline 
WA_T74FE_STR-ENDTY sy-vline 
WA_T74FE_STR-BSALM sy-vline 
WA_T74FE_STR-BSALD sy-vline 
WA_T74FE_STR-WAINU sy-vline 
WA_T74FE_STR-WAIUN sy-vline 
WA_T74FE_STR-CODAY sy-vline 
WA_T74FE_STR-COINT sy-vline 
WA_T74FE_STR-WDTTY sy-vline 
WA_T74FE_STR-PERUL sy-vline      INTO ld_text SEPARATED BY SPACE.

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