ABAP Select data from SAP table WFAS_NONROT_WR into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM WFAS_NONROT_WR
*  INTO TABLE @DATA(IT_WFAS_NONROT_WR2).
*--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_WFAS_NONROT_WR INDEX 1 INTO DATA(WA_WFAS_NONROT_WR2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<WFAS_NONROT_WR>-ONE_WEEK_REST = 1.
<WFAS_NONROT_WR>-TWO_WEEK_REST = 1.
<WFAS_NONROT_WR>-SPECIAL_DAYP1 = 1.
<WFAS_NONROT_WR>-SPECIAL_DAYP_M1 = 1.
<WFAS_NONROT_WR>-SPECIAL_DAYP2 = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_WFAS_NONROT_WR-SPECIAL_DAYP_M2, sy-vline,
  WA_WFAS_NONROT_WR-SPECIAL_DAYP3, sy-vline,
  WA_WFAS_NONROT_WR-SPECIAL_DAYP_M3, sy-vline,
  WA_WFAS_NONROT_WR-SPECIAL_DAYP4, sy-vline,
  WA_WFAS_NONROT_WR-SPECIAL_DAYP_M4, sy-vline,
  WA_WFAS_NONROT_WR-SPECIAL_DAYP5, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_WFAS_NONROT_WR 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_WFAS_NONROT_WR 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_WFAS_NONROT_WR INTO WA_WFAS_NONROT_WR.


*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_WFAS_NONROT_WR_STR, 
ONE_WEEK_REST TYPE STRING,
TWO_WEEK_REST TYPE STRING,
SPECIAL_DAYP1 TYPE STRING,
SPECIAL_DAYP_M1 TYPE STRING,
SPECIAL_DAYP2 TYPE STRING,
SPECIAL_DAYP_M2 TYPE STRING,
SPECIAL_DAYP3 TYPE STRING,
SPECIAL_DAYP_M3 TYPE STRING,
SPECIAL_DAYP4 TYPE STRING,
SPECIAL_DAYP_M4 TYPE STRING,
SPECIAL_DAYP5 TYPE STRING,
SPECIAL_DAYP_M5 TYPE STRING,
SPECIAL_DAYP6 TYPE STRING,
SPECIAL_DAYP_M6 TYPE STRING,
PRULE1_VAL TYPE STRING,
PRULE1_WEEK TYPE STRING,
PRULE2_VAL TYPE STRING,
PRULE2_WEEK TYPE STRING,
PRULE3_VAL TYPE STRING,
PRULE3_WEEK TYPE STRING,
PRULE4_VAL TYPE STRING,
PRULE4_WEEK TYPE STRING,
PRULE5_VAL TYPE STRING,
PRULE5_WEEK TYPE STRING,
PRULE6_VAL TYPE STRING,
PRULE6_WEEK TYPE STRING,
PRULE7_VAL TYPE STRING,
PRULE7_WEEK TYPE STRING,
PRULE8_VAL TYPE STRING,
PRULE8_WEEK TYPE STRING,
PRULE9_VAL TYPE STRING,
PRULE9_WEEK TYPE STRING,
PRULE10_VAL TYPE STRING,
PRULE10_WEEK TYPE STRING,END OF T_EKKO_STR.
DATA: WA_WFAS_NONROT_WR_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_WFAS_NONROT_WR_STR-ONE_WEEK_REST sy-vline 
WA_WFAS_NONROT_WR_STR-TWO_WEEK_REST sy-vline 
WA_WFAS_NONROT_WR_STR-SPECIAL_DAYP1 sy-vline 
WA_WFAS_NONROT_WR_STR-SPECIAL_DAYP_M1 sy-vline 
WA_WFAS_NONROT_WR_STR-SPECIAL_DAYP2 sy-vline 
WA_WFAS_NONROT_WR_STR-SPECIAL_DAYP_M2 sy-vline 
WA_WFAS_NONROT_WR_STR-SPECIAL_DAYP3 sy-vline 
WA_WFAS_NONROT_WR_STR-SPECIAL_DAYP_M3 sy-vline 
WA_WFAS_NONROT_WR_STR-SPECIAL_DAYP4 sy-vline 
WA_WFAS_NONROT_WR_STR-SPECIAL_DAYP_M4 sy-vline 
WA_WFAS_NONROT_WR_STR-SPECIAL_DAYP5 sy-vline 
WA_WFAS_NONROT_WR_STR-SPECIAL_DAYP_M5 sy-vline 
WA_WFAS_NONROT_WR_STR-SPECIAL_DAYP6 sy-vline 
WA_WFAS_NONROT_WR_STR-SPECIAL_DAYP_M6 sy-vline 
WA_WFAS_NONROT_WR_STR-PRULE1_VAL sy-vline 
WA_WFAS_NONROT_WR_STR-PRULE1_WEEK sy-vline 
WA_WFAS_NONROT_WR_STR-PRULE2_VAL sy-vline 
WA_WFAS_NONROT_WR_STR-PRULE2_WEEK sy-vline 
WA_WFAS_NONROT_WR_STR-PRULE3_VAL sy-vline 
WA_WFAS_NONROT_WR_STR-PRULE3_WEEK sy-vline 
WA_WFAS_NONROT_WR_STR-PRULE4_VAL sy-vline 
WA_WFAS_NONROT_WR_STR-PRULE4_WEEK sy-vline 
WA_WFAS_NONROT_WR_STR-PRULE5_VAL sy-vline 
WA_WFAS_NONROT_WR_STR-PRULE5_WEEK sy-vline 
WA_WFAS_NONROT_WR_STR-PRULE6_VAL sy-vline 
WA_WFAS_NONROT_WR_STR-PRULE6_WEEK sy-vline 
WA_WFAS_NONROT_WR_STR-PRULE7_VAL sy-vline 
WA_WFAS_NONROT_WR_STR-PRULE7_WEEK sy-vline 
WA_WFAS_NONROT_WR_STR-PRULE8_VAL sy-vline 
WA_WFAS_NONROT_WR_STR-PRULE8_WEEK sy-vline 
WA_WFAS_NONROT_WR_STR-PRULE9_VAL sy-vline 
WA_WFAS_NONROT_WR_STR-PRULE9_WEEK sy-vline 
WA_WFAS_NONROT_WR_STR-PRULE10_VAL sy-vline 
WA_WFAS_NONROT_WR_STR-PRULE10_WEEK sy-vline      INTO ld_text SEPARATED BY SPACE.

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