ABAP Select data from SAP table HCMFAB_S_ATS_MASS_APPR into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM HCMFAB_S_ATS_MASS_APPR
*  INTO TABLE @DATA(IT_HCMFAB_S_ATS_MASS_APPR2).
*--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_HCMFAB_S_ATS_MASS_APPR INDEX 1 INTO DATA(WA_HCMFAB_S_ATS_MASS_APPR2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<HCMFAB_S_ATS_MASS_APPR>-COUNTER = 1.
<HCMFAB_S_ATS_MASS_APPR>-EMPLOYEEID = 1.
<HCMFAB_S_ATS_MASS_APPR>-EMPLOYEENAME = 1.
<HCMFAB_S_ATS_MASS_APPR>-EMPLOYEEROLE = 1.
<HCMFAB_S_ATS_MASS_APPR>-TOTAL = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_HCMFAB_S_ATS_MASS_APPR-ASSIGNMENTID, sy-vline,
  WA_HCMFAB_S_ATS_MASS_APPR-ASSIGNMENTTEXT, sy-vline,
  WA_HCMFAB_S_ATS_MASS_APPR-CATSHOURS, sy-vline,
  WA_HCMFAB_S_ATS_MASS_APPR-CATSAMOUNT, sy-vline,
  WA_HCMFAB_S_ATS_MASS_APPR-CATSQUANTITY, sy-vline,
  WA_HCMFAB_S_ATS_MASS_APPR-MEINH, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_HCMFAB_S_ATS_MASS_APPR 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_HCMFAB_S_ATS_MASS_APPR 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_HCMFAB_S_ATS_MASS_APPR INTO WA_HCMFAB_S_ATS_MASS_APPR.


*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.

*Conversion exit CUNIT, internal->external for field MEINH
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_HCMFAB_S_ATS_MASS_APPR-MEINH
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_HCMFAB_S_ATS_MASS_APPR-MEINH.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field UNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_HCMFAB_S_ATS_MASS_APPR-UNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_HCMFAB_S_ATS_MASS_APPR-UNIT.
WRITE:/ 'New Value:', ld_input.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_HCMFAB_S_ATS_MASS_APPR_STR, 
COUNTER TYPE STRING,
EMPLOYEEID TYPE STRING,
EMPLOYEENAME TYPE STRING,
EMPLOYEEROLE TYPE STRING,
TOTAL TYPE STRING,
ASSIGNMENTID TYPE STRING,
ASSIGNMENTTEXT TYPE STRING,
CATSHOURS TYPE STRING,
CATSAMOUNT TYPE STRING,
CATSQUANTITY TYPE STRING,
MEINH TYPE STRING,
WAERS TYPE STRING,
UNIT TYPE STRING,
STATUS TYPE STRING,
REASON TYPE STRING,
LAEDA TYPE STRING,
LAETM TYPE STRING,
WORKITEMID TYPE STRING,
DUMMY TYPE STRING,END OF T_EKKO_STR.
DATA: WA_HCMFAB_S_ATS_MASS_APPR_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_HCMFAB_S_ATS_MASS_APPR_STR-COUNTER sy-vline 
WA_HCMFAB_S_ATS_MASS_APPR_STR-EMPLOYEEID sy-vline 
WA_HCMFAB_S_ATS_MASS_APPR_STR-EMPLOYEENAME sy-vline 
WA_HCMFAB_S_ATS_MASS_APPR_STR-EMPLOYEEROLE sy-vline 
WA_HCMFAB_S_ATS_MASS_APPR_STR-TOTAL sy-vline 
WA_HCMFAB_S_ATS_MASS_APPR_STR-ASSIGNMENTID sy-vline 
WA_HCMFAB_S_ATS_MASS_APPR_STR-ASSIGNMENTTEXT sy-vline 
WA_HCMFAB_S_ATS_MASS_APPR_STR-CATSHOURS sy-vline 
WA_HCMFAB_S_ATS_MASS_APPR_STR-CATSAMOUNT sy-vline 
WA_HCMFAB_S_ATS_MASS_APPR_STR-CATSQUANTITY sy-vline 
WA_HCMFAB_S_ATS_MASS_APPR_STR-MEINH sy-vline 
WA_HCMFAB_S_ATS_MASS_APPR_STR-WAERS sy-vline 
WA_HCMFAB_S_ATS_MASS_APPR_STR-UNIT sy-vline 
WA_HCMFAB_S_ATS_MASS_APPR_STR-STATUS sy-vline 
WA_HCMFAB_S_ATS_MASS_APPR_STR-REASON sy-vline 
WA_HCMFAB_S_ATS_MASS_APPR_STR-LAEDA sy-vline 
WA_HCMFAB_S_ATS_MASS_APPR_STR-LAETM sy-vline 
WA_HCMFAB_S_ATS_MASS_APPR_STR-WORKITEMID sy-vline 
WA_HCMFAB_S_ATS_MASS_APPR_STR-DUMMY sy-vline      INTO ld_text SEPARATED BY SPACE.

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