ABAP Select data from SAP table WFAFCS_ASL_VOL_SAVE into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM WFAFCS_ASL_VOL_SAVE
*  INTO TABLE @DATA(IT_WFAFCS_ASL_VOL_SAVE2).
*--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_WFAFCS_ASL_VOL_SAVE INDEX 1 INTO DATA(WA_WFAFCS_ASL_VOL_SAVE2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<WFAFCS_ASL_VOL_SAVE>-ORG_PLVAR = 1.
<WFAFCS_ASL_VOL_SAVE>-ORG_OTYPE = 1.
<WFAFCS_ASL_VOL_SAVE>-ORG_OBJID = 1.
<WFAFCS_ASL_VOL_SAVE>-DEPT_INDEX = 1.
<WFAFCS_ASL_VOL_SAVE>-WRKAREA_CODE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_WFAFCS_ASL_VOL_SAVE-ADJUST_TYPE, sy-vline,
  WA_WFAFCS_ASL_VOL_SAVE-START_DATE, sy-vline,
  WA_WFAFCS_ASL_VOL_SAVE-END_DATE, sy-vline,
  WA_WFAFCS_ASL_VOL_SAVE-ADJUST_1, sy-vline,
  WA_WFAFCS_ASL_VOL_SAVE-ADJUST_TYPE, sy-vline,
  WA_WFAFCS_ASL_VOL_SAVE-VALUE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_WFAFCS_ASL_VOL_SAVE 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_WFAFCS_ASL_VOL_SAVE 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_WFAFCS_ASL_VOL_SAVE INTO WA_WFAFCS_ASL_VOL_SAVE.


*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_WFAFCS_ASL_VOL_SAVE_STR, 
ORG_PLVAR TYPE STRING,
ORG_OTYPE TYPE STRING,
ORG_OBJID TYPE STRING,
DEPT_INDEX TYPE STRING,
WRKAREA_CODE TYPE STRING,
ADJUST_TYPE TYPE STRING,
START_DATE TYPE STRING,
END_DATE TYPE STRING,
ADJUST_1 TYPE STRING,
ADJUST_TYPE TYPE STRING,
VALUE TYPE STRING,
MISSING TYPE STRING,
NON_MISSING TYPE STRING,
ADJUST_2 TYPE STRING,
ADJUST_TYPE TYPE STRING,
VALUE TYPE STRING,
MISSING TYPE STRING,
NON_MISSING TYPE STRING,
ADJUST_3 TYPE STRING,
ADJUST_TYPE TYPE STRING,
VALUE TYPE STRING,
MISSING TYPE STRING,
NON_MISSING TYPE STRING,
ADJUST_4 TYPE STRING,
ADJUST_TYPE TYPE STRING,
VALUE TYPE STRING,
MISSING TYPE STRING,
NON_MISSING TYPE STRING,
ADJUST_5 TYPE STRING,
ADJUST_TYPE TYPE STRING,
VALUE TYPE STRING,
MISSING TYPE STRING,
NON_MISSING TYPE STRING,
ADJUST_6 TYPE STRING,
ADJUST_TYPE TYPE STRING,
VALUE TYPE STRING,
MISSING TYPE STRING,
NON_MISSING TYPE STRING,
ADJUST_7 TYPE STRING,
ADJUST_TYPE TYPE STRING,
VALUE TYPE STRING,
MISSING TYPE STRING,
NON_MISSING TYPE STRING,
ADJUST_W TYPE STRING,
ADJUST_TYPE TYPE STRING,
VALUE TYPE STRING,
MISSING TYPE STRING,
NON_MISSING TYPE STRING,END OF T_EKKO_STR.
DATA: WA_WFAFCS_ASL_VOL_SAVE_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_WFAFCS_ASL_VOL_SAVE_STR-ORG_PLVAR sy-vline 
WA_WFAFCS_ASL_VOL_SAVE_STR-ORG_OTYPE sy-vline 
WA_WFAFCS_ASL_VOL_SAVE_STR-ORG_OBJID sy-vline 
WA_WFAFCS_ASL_VOL_SAVE_STR-DEPT_INDEX sy-vline 
WA_WFAFCS_ASL_VOL_SAVE_STR-WRKAREA_CODE sy-vline 
WA_WFAFCS_ASL_VOL_SAVE_STR-ADJUST_TYPE sy-vline 
WA_WFAFCS_ASL_VOL_SAVE_STR-START_DATE sy-vline 
WA_WFAFCS_ASL_VOL_SAVE_STR-END_DATE sy-vline 
WA_WFAFCS_ASL_VOL_SAVE_STR-ADJUST_1 sy-vline 
WA_WFAFCS_ASL_VOL_SAVE_STR-ADJUST_TYPE sy-vline 
WA_WFAFCS_ASL_VOL_SAVE_STR-VALUE sy-vline 
WA_WFAFCS_ASL_VOL_SAVE_STR-MISSING sy-vline 
WA_WFAFCS_ASL_VOL_SAVE_STR-NON_MISSING sy-vline 
WA_WFAFCS_ASL_VOL_SAVE_STR-ADJUST_2 sy-vline 
WA_WFAFCS_ASL_VOL_SAVE_STR-ADJUST_TYPE sy-vline 
WA_WFAFCS_ASL_VOL_SAVE_STR-VALUE sy-vline 
WA_WFAFCS_ASL_VOL_SAVE_STR-MISSING sy-vline 
WA_WFAFCS_ASL_VOL_SAVE_STR-NON_MISSING sy-vline 
WA_WFAFCS_ASL_VOL_SAVE_STR-ADJUST_3 sy-vline 
WA_WFAFCS_ASL_VOL_SAVE_STR-ADJUST_TYPE sy-vline 
WA_WFAFCS_ASL_VOL_SAVE_STR-VALUE sy-vline 
WA_WFAFCS_ASL_VOL_SAVE_STR-MISSING sy-vline 
WA_WFAFCS_ASL_VOL_SAVE_STR-NON_MISSING sy-vline 
WA_WFAFCS_ASL_VOL_SAVE_STR-ADJUST_4 sy-vline 
WA_WFAFCS_ASL_VOL_SAVE_STR-ADJUST_TYPE sy-vline 
WA_WFAFCS_ASL_VOL_SAVE_STR-VALUE sy-vline 
WA_WFAFCS_ASL_VOL_SAVE_STR-MISSING sy-vline 
WA_WFAFCS_ASL_VOL_SAVE_STR-NON_MISSING sy-vline 
WA_WFAFCS_ASL_VOL_SAVE_STR-ADJUST_5 sy-vline 
WA_WFAFCS_ASL_VOL_SAVE_STR-ADJUST_TYPE sy-vline 
WA_WFAFCS_ASL_VOL_SAVE_STR-VALUE sy-vline 
WA_WFAFCS_ASL_VOL_SAVE_STR-MISSING sy-vline 
WA_WFAFCS_ASL_VOL_SAVE_STR-NON_MISSING sy-vline 
WA_WFAFCS_ASL_VOL_SAVE_STR-ADJUST_6 sy-vline 
WA_WFAFCS_ASL_VOL_SAVE_STR-ADJUST_TYPE sy-vline 
WA_WFAFCS_ASL_VOL_SAVE_STR-VALUE sy-vline 
WA_WFAFCS_ASL_VOL_SAVE_STR-MISSING sy-vline 
WA_WFAFCS_ASL_VOL_SAVE_STR-NON_MISSING sy-vline 
WA_WFAFCS_ASL_VOL_SAVE_STR-ADJUST_7 sy-vline 
WA_WFAFCS_ASL_VOL_SAVE_STR-ADJUST_TYPE sy-vline 
WA_WFAFCS_ASL_VOL_SAVE_STR-VALUE sy-vline 
WA_WFAFCS_ASL_VOL_SAVE_STR-MISSING sy-vline 
WA_WFAFCS_ASL_VOL_SAVE_STR-NON_MISSING sy-vline 
WA_WFAFCS_ASL_VOL_SAVE_STR-ADJUST_W sy-vline 
WA_WFAFCS_ASL_VOL_SAVE_STR-ADJUST_TYPE sy-vline 
WA_WFAFCS_ASL_VOL_SAVE_STR-VALUE sy-vline 
WA_WFAFCS_ASL_VOL_SAVE_STR-MISSING sy-vline 
WA_WFAFCS_ASL_VOL_SAVE_STR-NON_MISSING sy-vline      INTO ld_text SEPARATED BY SPACE.

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