ABAP Select data from SAP table SGT_MADKA_REP into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM SGT_MADKA_REP
*  INTO TABLE @DATA(IT_SGT_MADKA_REP2).
*--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_SGT_MADKA_REP INDEX 1 INTO DATA(WA_SGT_MADKA_REP2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<SGT_MADKA_REP>-MATNR = 1.
<SGT_MADKA_REP>-MAKTX = 1.
<SGT_MADKA_REP>-ATWRT1 = 1.
<SGT_MADKA_REP>-ATWRT2 = 1.
<SGT_MADKA_REP>-ATWRT3 = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_SGT_MADKA_REP-ATWRT4, sy-vline,
  WA_SGT_MADKA_REP-ATWRT5, sy-vline,
  WA_SGT_MADKA_REP-ATWRT6, sy-vline,
  WA_SGT_MADKA_REP-ATWRT7, sy-vline,
  WA_SGT_MADKA_REP-ATWRT8, sy-vline,
  WA_SGT_MADKA_REP-ATWRT9, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_SGT_MADKA_REP 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_SGT_MADKA_REP 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_SGT_MADKA_REP INTO WA_SGT_MADKA_REP.


*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 MATN1, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_SGT_MADKA_REP-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_SGT_MADKA_REP-MATNR.
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_SGT_MADKA_REP_STR, 
MATNR TYPE STRING,
MAKTX TYPE STRING,
ATWRT1 TYPE STRING,
ATWRT2 TYPE STRING,
ATWRT3 TYPE STRING,
ATWRT4 TYPE STRING,
ATWRT5 TYPE STRING,
ATWRT6 TYPE STRING,
ATWRT7 TYPE STRING,
ATWRT8 TYPE STRING,
ATWRT9 TYPE STRING,
ATWRT10 TYPE STRING,
SGT_SCAT TYPE STRING,
SGT_KALGP TYPE STRING,
VPRSV TYPE STRING,
VMVER TYPE STRING,
VMSTP TYPE STRING,
WRF_CHARSTC1_TXT TYPE STRING,
WRF_CHARSTC2_TXT TYPE STRING,
WRF_CHARSTC3_TXT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_SGT_MADKA_REP_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_SGT_MADKA_REP_STR-MATNR sy-vline 
WA_SGT_MADKA_REP_STR-MAKTX sy-vline 
WA_SGT_MADKA_REP_STR-ATWRT1 sy-vline 
WA_SGT_MADKA_REP_STR-ATWRT2 sy-vline 
WA_SGT_MADKA_REP_STR-ATWRT3 sy-vline 
WA_SGT_MADKA_REP_STR-ATWRT4 sy-vline 
WA_SGT_MADKA_REP_STR-ATWRT5 sy-vline 
WA_SGT_MADKA_REP_STR-ATWRT6 sy-vline 
WA_SGT_MADKA_REP_STR-ATWRT7 sy-vline 
WA_SGT_MADKA_REP_STR-ATWRT8 sy-vline 
WA_SGT_MADKA_REP_STR-ATWRT9 sy-vline 
WA_SGT_MADKA_REP_STR-ATWRT10 sy-vline 
WA_SGT_MADKA_REP_STR-SGT_SCAT sy-vline 
WA_SGT_MADKA_REP_STR-SGT_KALGP sy-vline 
WA_SGT_MADKA_REP_STR-VPRSV sy-vline 
WA_SGT_MADKA_REP_STR-VMVER sy-vline 
WA_SGT_MADKA_REP_STR-VMSTP sy-vline 
WA_SGT_MADKA_REP_STR-WRF_CHARSTC1_TXT sy-vline 
WA_SGT_MADKA_REP_STR-WRF_CHARSTC2_TXT sy-vline 
WA_SGT_MADKA_REP_STR-WRF_CHARSTC3_TXT sy-vline      INTO ld_text SEPARATED BY SPACE.

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