ABAP Select data from SAP table HCMT_BSP_PA_KR_R0542_LIN_A into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP HCMT_BSP_PA_KR_R0542_LIN_A 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 HCMT_BSP_PA_KR_R0542_LIN_A. 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 HCMT_BSP_PA_KR_R0542_LIN_A 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_HCMT_BSP_PA_KR_R0542_LIN_A TYPE STANDARD TABLE OF HCMT_BSP_PA_KR_R0542_LIN_A,
      WA_HCMT_BSP_PA_KR_R0542_LIN_A TYPE HCMT_BSP_PA_KR_R0542_LIN_A,
      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: <HCMT_BSP_PA_KR_R0542_LIN_A> TYPE HCMT_BSP_PA_KR_R0542_LIN_A.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_HCMT_BSP_PA_KR_R0542_LIN_A.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM HCMT_BSP_PA_KR_R0542_LIN_A
  INTO TABLE IT_HCMT_BSP_PA_KR_R0542_LIN_A.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM HCMT_BSP_PA_KR_R0542_LIN_A
*  INTO TABLE @DATA(IT_HCMT_BSP_PA_KR_R0542_LIN_A2).
*--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_HCMT_BSP_PA_KR_R0542_LIN_A INDEX 1 INTO DATA(WA_HCMT_BSP_PA_KR_R0542_LIN_A2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_HCMT_BSP_PA_KR_R0542_LIN_A ASSIGNING <HCMT_BSP_PA_KR_R0542_LIN_A>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<HCMT_BSP_PA_KR_R0542_LIN_A>-OBJECT_KEY = 1.
<HCMT_BSP_PA_KR_R0542_LIN_A>-BUSIN = 1.
<HCMT_BSP_PA_KR_R0542_LIN_A>-COMPN = 1.
<HCMT_BSP_PA_KR_R0542_LIN_A>-SALAR = 1.
<HCMT_BSP_PA_KR_R0542_LIN_A>-BONUS = 1.

ENDLOOP.

LOOP AT IT_HCMT_BSP_PA_KR_R0542_LIN_A INTO WA_HCMT_BSP_PA_KR_R0542_LIN_A.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_HCMT_BSP_PA_KR_R0542_LIN_A-INTAX, sy-vline,
  WA_HCMT_BSP_PA_KR_R0542_LIN_A-RETAX, sy-vline,
  WA_HCMT_BSP_PA_KR_R0542_LIN_A-OUTEE, sy-vline,
  WA_HCMT_BSP_PA_KR_R0542_LIN_A-OVRTM, sy-vline,
  WA_HCMT_BSP_PA_KR_R0542_LIN_A-OTHER, sy-vline,
  WA_HCMT_BSP_PA_KR_R0542_LIN_A-MEDIS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_HCMT_BSP_PA_KR_R0542_LIN_A 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_HCMT_BSP_PA_KR_R0542_LIN_A 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_HCMT_BSP_PA_KR_R0542_LIN_A INTO WA_HCMT_BSP_PA_KR_R0542_LIN_A.


*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_HCMT_BSP_PA_KR_R0542_LIN_A_STR, 
OBJECT_KEY TYPE STRING,
BUSIN TYPE STRING,
COMPN TYPE STRING,
SALAR TYPE STRING,
BONUS TYPE STRING,
INTAX TYPE STRING,
RETAX TYPE STRING,
OUTEE TYPE STRING,
OVRTM TYPE STRING,
OTHER TYPE STRING,
MEDIS TYPE STRING,
NPPRE TYPE STRING,
EIMIS TYPE STRING,
FLDEG TYPE STRING,
FRITX TYPE STRING,
FREXM TYPE STRING,
ACBON TYPE STRING,
SPTAX TYPE STRING,
WAED1 TYPE STRING,
WAED2 TYPE STRING,
WAED3 TYPE STRING,
WAED4 TYPE STRING,
WAED5 TYPE STRING,
WAED6 TYPE STRING,
WAED7 TYPE STRING,
WAED8 TYPE STRING,
WAED9 TYPE STRING,
WAEDA TYPE STRING,
WAEDB TYPE STRING,
WAEDC TYPE STRING,
WAEDD TYPE STRING,
WAEDE TYPE STRING,
WAEDF TYPE STRING,END OF T_EKKO_STR.
DATA: WA_HCMT_BSP_PA_KR_R0542_LIN_A_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_HCMT_BSP_PA_KR_R0542_LIN_A_STR-OBJECT_KEY sy-vline 
WA_HCMT_BSP_PA_KR_R0542_LIN_A_STR-BUSIN sy-vline 
WA_HCMT_BSP_PA_KR_R0542_LIN_A_STR-COMPN sy-vline 
WA_HCMT_BSP_PA_KR_R0542_LIN_A_STR-SALAR sy-vline 
WA_HCMT_BSP_PA_KR_R0542_LIN_A_STR-BONUS sy-vline 
WA_HCMT_BSP_PA_KR_R0542_LIN_A_STR-INTAX sy-vline 
WA_HCMT_BSP_PA_KR_R0542_LIN_A_STR-RETAX sy-vline 
WA_HCMT_BSP_PA_KR_R0542_LIN_A_STR-OUTEE sy-vline 
WA_HCMT_BSP_PA_KR_R0542_LIN_A_STR-OVRTM sy-vline 
WA_HCMT_BSP_PA_KR_R0542_LIN_A_STR-OTHER sy-vline 
WA_HCMT_BSP_PA_KR_R0542_LIN_A_STR-MEDIS sy-vline 
WA_HCMT_BSP_PA_KR_R0542_LIN_A_STR-NPPRE sy-vline 
WA_HCMT_BSP_PA_KR_R0542_LIN_A_STR-EIMIS sy-vline 
WA_HCMT_BSP_PA_KR_R0542_LIN_A_STR-FLDEG sy-vline 
WA_HCMT_BSP_PA_KR_R0542_LIN_A_STR-FRITX sy-vline 
WA_HCMT_BSP_PA_KR_R0542_LIN_A_STR-FREXM sy-vline 
WA_HCMT_BSP_PA_KR_R0542_LIN_A_STR-ACBON sy-vline 
WA_HCMT_BSP_PA_KR_R0542_LIN_A_STR-SPTAX sy-vline 
WA_HCMT_BSP_PA_KR_R0542_LIN_A_STR-WAED1 sy-vline 
WA_HCMT_BSP_PA_KR_R0542_LIN_A_STR-WAED2 sy-vline 
WA_HCMT_BSP_PA_KR_R0542_LIN_A_STR-WAED3 sy-vline 
WA_HCMT_BSP_PA_KR_R0542_LIN_A_STR-WAED4 sy-vline 
WA_HCMT_BSP_PA_KR_R0542_LIN_A_STR-WAED5 sy-vline 
WA_HCMT_BSP_PA_KR_R0542_LIN_A_STR-WAED6 sy-vline 
WA_HCMT_BSP_PA_KR_R0542_LIN_A_STR-WAED7 sy-vline 
WA_HCMT_BSP_PA_KR_R0542_LIN_A_STR-WAED8 sy-vline 
WA_HCMT_BSP_PA_KR_R0542_LIN_A_STR-WAED9 sy-vline 
WA_HCMT_BSP_PA_KR_R0542_LIN_A_STR-WAEDA sy-vline 
WA_HCMT_BSP_PA_KR_R0542_LIN_A_STR-WAEDB sy-vline 
WA_HCMT_BSP_PA_KR_R0542_LIN_A_STR-WAEDC sy-vline 
WA_HCMT_BSP_PA_KR_R0542_LIN_A_STR-WAEDD sy-vline 
WA_HCMT_BSP_PA_KR_R0542_LIN_A_STR-WAEDE sy-vline 
WA_HCMT_BSP_PA_KR_R0542_LIN_A_STR-WAEDF sy-vline      INTO ld_text SEPARATED BY SPACE.

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