ABAP Select data from SAP table HRPLOG_MARKTAB into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM HRPLOG_MARKTAB
*  INTO TABLE @DATA(IT_HRPLOG_MARKTAB2).
*--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_HRPLOG_MARKTAB INDEX 1 INTO DATA(WA_HRPLOG_MARKTAB2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<HRPLOG_MARKTAB>-LLEVEL = 1.
<HRPLOG_MARKTAB>-DISPLAY = 1.
<HRPLOG_MARKTAB>-DISPLAY_TAB = 1.
<HRPLOG_MARKTAB>-LEXPAND = 1.
<HRPLOG_MARKTAB>-LCOMPRESS = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_HRPLOG_MARKTAB-ID, sy-vline,
  WA_HRPLOG_MARKTAB-TYPE, sy-vline,
  WA_HRPLOG_MARKTAB-NAME, sy-vline,
  WA_HRPLOG_MARKTAB-TLEVEL, sy-vline,
  WA_HRPLOG_MARKTAB-LINK, sy-vline,
  WA_HRPLOG_MARKTAB-COMPRESS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_HRPLOG_MARKTAB 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_HRPLOG_MARKTAB 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_HRPLOG_MARKTAB INTO WA_HRPLOG_MARKTAB.


*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_HRPLOG_MARKTAB_STR, 
LLEVEL TYPE STRING,
DISPLAY TYPE STRING,
DISPLAY_TAB TYPE STRING,
LEXPAND TYPE STRING,
LCOMPRESS TYPE STRING,
ID TYPE STRING,
TYPE TYPE STRING,
NAME TYPE STRING,
TLEVEL TYPE STRING,
LINK TYPE STRING,
COMPRESS TYPE STRING,
LEAF TYPE STRING,
TLOCK TYPE STRING,
PARENT TYPE STRING,
CHILD TYPE STRING,
NEXT TYPE STRING,
NLENGTH TYPE STRING,
COLOR TYPE STRING,
INTENSIV TYPE STRING,
TEXT TYPE STRING,
TLENGTH TYPE STRING,
TCOLOR TYPE STRING,
TINTENSIV TYPE STRING,
TEXT1 TYPE STRING,
TLENGTH1 TYPE STRING,
TCOLOR1 TYPE STRING,
TINTENSIV1 TYPE STRING,
TEXT2 TYPE STRING,
TLENGTH2 TYPE STRING,
TCOLOR2 TYPE STRING,
TINTENSIV2 TYPE STRING,
TEXT3 TYPE STRING,
TLENGTH3 TYPE STRING,
TCOLOR3 TYPE STRING,
TINTENSIV3 TYPE STRING,
TEXT4 TYPE STRING,
TLENGTH4 TYPE STRING,
TCOLOR4 TYPE STRING,
TINTENSIV4 TYPE STRING,
TEXT5 TYPE STRING,
TLENGTH5 TYPE STRING,
TCOLOR5 TYPE STRING,
TINTENSIV5 TYPE STRING,
TEXT6 TYPE STRING,
TLENGTH6 TYPE STRING,
TCOLOR6 TYPE STRING,
TINTENSIV6 TYPE STRING,
TEXT7 TYPE STRING,
TEXT8 TYPE STRING,
TEXT9 TYPE STRING,
EMPTY_LINES TYPE STRING,END OF T_EKKO_STR.
DATA: WA_HRPLOG_MARKTAB_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_HRPLOG_MARKTAB_STR-LLEVEL sy-vline 
WA_HRPLOG_MARKTAB_STR-DISPLAY sy-vline 
WA_HRPLOG_MARKTAB_STR-DISPLAY_TAB sy-vline 
WA_HRPLOG_MARKTAB_STR-LEXPAND sy-vline 
WA_HRPLOG_MARKTAB_STR-LCOMPRESS sy-vline 
WA_HRPLOG_MARKTAB_STR-ID sy-vline 
WA_HRPLOG_MARKTAB_STR-TYPE sy-vline 
WA_HRPLOG_MARKTAB_STR-NAME sy-vline 
WA_HRPLOG_MARKTAB_STR-TLEVEL sy-vline 
WA_HRPLOG_MARKTAB_STR-LINK sy-vline 
WA_HRPLOG_MARKTAB_STR-COMPRESS sy-vline 
WA_HRPLOG_MARKTAB_STR-LEAF sy-vline 
WA_HRPLOG_MARKTAB_STR-TLOCK sy-vline 
WA_HRPLOG_MARKTAB_STR-PARENT sy-vline 
WA_HRPLOG_MARKTAB_STR-CHILD sy-vline 
WA_HRPLOG_MARKTAB_STR-NEXT sy-vline 
WA_HRPLOG_MARKTAB_STR-NLENGTH sy-vline 
WA_HRPLOG_MARKTAB_STR-COLOR sy-vline 
WA_HRPLOG_MARKTAB_STR-INTENSIV sy-vline 
WA_HRPLOG_MARKTAB_STR-TEXT sy-vline 
WA_HRPLOG_MARKTAB_STR-TLENGTH sy-vline 
WA_HRPLOG_MARKTAB_STR-TCOLOR sy-vline 
WA_HRPLOG_MARKTAB_STR-TINTENSIV sy-vline 
WA_HRPLOG_MARKTAB_STR-TEXT1 sy-vline 
WA_HRPLOG_MARKTAB_STR-TLENGTH1 sy-vline 
WA_HRPLOG_MARKTAB_STR-TCOLOR1 sy-vline 
WA_HRPLOG_MARKTAB_STR-TINTENSIV1 sy-vline 
WA_HRPLOG_MARKTAB_STR-TEXT2 sy-vline 
WA_HRPLOG_MARKTAB_STR-TLENGTH2 sy-vline 
WA_HRPLOG_MARKTAB_STR-TCOLOR2 sy-vline 
WA_HRPLOG_MARKTAB_STR-TINTENSIV2 sy-vline 
WA_HRPLOG_MARKTAB_STR-TEXT3 sy-vline 
WA_HRPLOG_MARKTAB_STR-TLENGTH3 sy-vline 
WA_HRPLOG_MARKTAB_STR-TCOLOR3 sy-vline 
WA_HRPLOG_MARKTAB_STR-TINTENSIV3 sy-vline 
WA_HRPLOG_MARKTAB_STR-TEXT4 sy-vline 
WA_HRPLOG_MARKTAB_STR-TLENGTH4 sy-vline 
WA_HRPLOG_MARKTAB_STR-TCOLOR4 sy-vline 
WA_HRPLOG_MARKTAB_STR-TINTENSIV4 sy-vline 
WA_HRPLOG_MARKTAB_STR-TEXT5 sy-vline 
WA_HRPLOG_MARKTAB_STR-TLENGTH5 sy-vline 
WA_HRPLOG_MARKTAB_STR-TCOLOR5 sy-vline 
WA_HRPLOG_MARKTAB_STR-TINTENSIV5 sy-vline 
WA_HRPLOG_MARKTAB_STR-TEXT6 sy-vline 
WA_HRPLOG_MARKTAB_STR-TLENGTH6 sy-vline 
WA_HRPLOG_MARKTAB_STR-TCOLOR6 sy-vline 
WA_HRPLOG_MARKTAB_STR-TINTENSIV6 sy-vline 
WA_HRPLOG_MARKTAB_STR-TEXT7 sy-vline 
WA_HRPLOG_MARKTAB_STR-TEXT8 sy-vline 
WA_HRPLOG_MARKTAB_STR-TEXT9 sy-vline 
WA_HRPLOG_MARKTAB_STR-EMPTY_LINES sy-vline      INTO ld_text SEPARATED BY SPACE.

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