ABAP Select data from SAP table /SAPAPO/FUN_STEP into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP /SAPAPO/FUN_STEP 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 /SAPAPO/FUN_STEP. 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 /SAPAPO/FUN_STEP 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_/SAPAPO/FUN_STEP TYPE STANDARD TABLE OF /SAPAPO/FUN_STEP,
      WA_/SAPAPO/FUN_STEP TYPE /SAPAPO/FUN_STEP,
      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: </SAPAPO/FUN_STEP> TYPE /SAPAPO/FUN_STEP.

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

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM /SAPAPO/FUN_STEP
  INTO TABLE IT_/SAPAPO/FUN_STEP.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /SAPAPO/FUN_STEP
*  INTO TABLE @DATA(IT_/SAPAPO/FUN_STEP2).
*--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_/SAPAPO/FUN_STEP INDEX 1 INTO DATA(WA_/SAPAPO/FUN_STEP2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_/SAPAPO/FUN_STEP ASSIGNING </SAPAPO/FUN_STEP>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
</SAPAPO/FUN_STEP>-MANDT = 1.
</SAPAPO/FUN_STEP>-PLANLAYOUT = 1.
</SAPAPO/FUN_STEP>-PLANVIEW = 1.
</SAPAPO/FUN_STEP>-MAKRO = 1.
</SAPAPO/FUN_STEP>-STEP = 1.

ENDLOOP.

LOOP AT IT_/SAPAPO/FUN_STEP INTO WA_/SAPAPO/FUN_STEP.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/SAPAPO/FUN_STEP-TREEPOSITION, sy-vline,
  WA_/SAPAPO/FUN_STEP-FUNSTRING, sy-vline,
  WA_/SAPAPO/FUN_STEP-STRINGTYPE, sy-vline,
  WA_/SAPAPO/FUN_STEP-INDEX_FROM, sy-vline,
  WA_/SAPAPO/FUN_STEP-INDEX_TO, sy-vline,
  WA_/SAPAPO/FUN_STEP-DIRECTION, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/SAPAPO/FUN_STEP 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_/SAPAPO/FUN_STEP 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_/SAPAPO/FUN_STEP INTO WA_/SAPAPO/FUN_STEP.


*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_/SAPAPO/FUN_STEP_STR, 
MANDT TYPE STRING,
PLANLAYOUT TYPE STRING,
PLANVIEW TYPE STRING,
MAKRO TYPE STRING,
STEP TYPE STRING,
TREEPOSITION TYPE STRING,
FUNSTRING TYPE STRING,
STRINGTYPE TYPE STRING,
INDEX_FROM TYPE STRING,
INDEX_TO TYPE STRING,
DIRECTION TYPE STRING,
FORM_ID TYPE STRING,
CALC_AREA TYPE STRING,
MISSING_VALUES TYPE STRING,
FLG_INACTIVE TYPE STRING,
DATE_FROM TYPE STRING,
DATE_TO TYPE STRING,
FLG_DATE_RANGE TYPE STRING,
FLG_AUTO_ADJ_L TYPE STRING,
FLG_AUTO_ADJ_R TYPE STRING,
DEBUG TYPE STRING,
COL_ADJ_TYPE_L TYPE STRING,
COL_ADJ_TYPE_R TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/SAPAPO/FUN_STEP_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_/SAPAPO/FUN_STEP_STR-MANDT sy-vline 
WA_/SAPAPO/FUN_STEP_STR-PLANLAYOUT sy-vline 
WA_/SAPAPO/FUN_STEP_STR-PLANVIEW sy-vline 
WA_/SAPAPO/FUN_STEP_STR-MAKRO sy-vline 
WA_/SAPAPO/FUN_STEP_STR-STEP sy-vline 
WA_/SAPAPO/FUN_STEP_STR-TREEPOSITION sy-vline 
WA_/SAPAPO/FUN_STEP_STR-FUNSTRING sy-vline 
WA_/SAPAPO/FUN_STEP_STR-STRINGTYPE sy-vline 
WA_/SAPAPO/FUN_STEP_STR-INDEX_FROM sy-vline 
WA_/SAPAPO/FUN_STEP_STR-INDEX_TO sy-vline 
WA_/SAPAPO/FUN_STEP_STR-DIRECTION sy-vline 
WA_/SAPAPO/FUN_STEP_STR-FORM_ID sy-vline 
WA_/SAPAPO/FUN_STEP_STR-CALC_AREA sy-vline 
WA_/SAPAPO/FUN_STEP_STR-MISSING_VALUES sy-vline 
WA_/SAPAPO/FUN_STEP_STR-FLG_INACTIVE sy-vline 
WA_/SAPAPO/FUN_STEP_STR-DATE_FROM sy-vline 
WA_/SAPAPO/FUN_STEP_STR-DATE_TO sy-vline 
WA_/SAPAPO/FUN_STEP_STR-FLG_DATE_RANGE sy-vline 
WA_/SAPAPO/FUN_STEP_STR-FLG_AUTO_ADJ_L sy-vline 
WA_/SAPAPO/FUN_STEP_STR-FLG_AUTO_ADJ_R sy-vline 
WA_/SAPAPO/FUN_STEP_STR-DEBUG sy-vline 
WA_/SAPAPO/FUN_STEP_STR-COL_ADJ_TYPE_L sy-vline 
WA_/SAPAPO/FUN_STEP_STR-COL_ADJ_TYPE_R sy-vline      INTO ld_text SEPARATED BY SPACE.

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