ABAP Select data from SAP table V50GSMAB into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP V50GSMAB 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 V50GSMAB. 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 V50GSMAB 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_V50GSMAB TYPE STANDARD TABLE OF V50GSMAB,
      WA_V50GSMAB TYPE V50GSMAB,
      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: <V50GSMAB> TYPE V50GSMAB.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_V50GSMAB.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM V50GSMAB
  INTO TABLE IT_V50GSMAB.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM V50GSMAB
*  INTO TABLE @DATA(IT_V50GSMAB2).
*--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_V50GSMAB INDEX 1 INTO DATA(WA_V50GSMAB2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_V50GSMAB ASSIGNING <V50GSMAB>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<V50GSMAB>-LFDNR = 1.
<V50GSMAB>-MKMAL = 1.
<V50GSMAB>-AUSPR = 1.
<V50GSMAB>-MORED = 1.
<V50GSMAB>-SEGMT = 1.

ENDLOOP.

LOOP AT IT_V50GSMAB INTO WA_V50GSMAB.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_V50GSMAB-MEART, sy-vline,
  WA_V50GSMAB-UVLEV, sy-vline,
  WA_V50GSMAB-UVMEI, sy-vline,
  WA_V50GSMAB-UVMEW, sy-vline,
  WA_V50GSMAB-RECMO, sy-vline,
  WA_V50GSMAB-METYP, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_V50GSMAB 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_V50GSMAB 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_V50GSMAB INTO WA_V50GSMAB.


*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 SUM_EIGENMAEH
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_V50GSMAB-SUM_EIGENMAEH
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_V50GSMAB-SUM_EIGENMAEH.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field DATUMJAHR_2400
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_V50GSMAB-DATUMJAHR_2400
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_V50GSMAB-DATUMJAHR_2400.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field RYEAR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_V50GSMAB-RYEAR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_V50GSMAB-RYEAR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field EIGENMAEH_DEC6
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_V50GSMAB-EIGENMAEH_DEC6
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_V50GSMAB-EIGENMAEH_DEC6.
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_V50GSMAB_STR, 
LFDNR TYPE STRING,
MKMAL TYPE STRING,
AUSPR TYPE STRING,
MORED TYPE STRING,
SEGMT TYPE STRING,
MEART TYPE STRING,
UVLEV TYPE STRING,
UVMEI TYPE STRING,
UVMEW TYPE STRING,
RECMO TYPE STRING,
METYP TYPE STRING,
INCPL TYPE STRING,
TECDE TYPE STRING,
MTEXT TYPE STRING,
MTXT2 TYPE STRING,
UVSTA TYPE STRING,
ACSTA TYPE STRING,
KONTA TYPE STRING,
FIADR TYPE STRING,
RLFDN TYPE STRING,
VARI1 TYPE STRING,
VARI2 TYPE STRING,
VARI3 TYPE STRING,
VARI4 TYPE STRING,
VARI5 TYPE STRING,
VARI6 TYPE STRING,
VARI7 TYPE STRING,
VARI8 TYPE STRING,
MEDI1 TYPE STRING,
MEDI2 TYPE STRING,
MEDI3 TYPE STRING,
MEDI4 TYPE STRING,
MEDI5 TYPE STRING,
MEDI6 TYPE STRING,
MEDI7 TYPE STRING,
MEDI8 TYPE STRING,
MEDTX TYPE STRING,
METTX TYPE STRING,
SUM_RECHNWEAK TYPE STRING,
SUM_RECHNWEEH TYPE STRING,
SUM_GRENZWEAK TYPE STRING,
SUM_GRENZWEEH TYPE STRING,
SUM_EIGENMAAK TYPE STRING,
SUM_EIGENMAEH TYPE STRING,
RECMO_ES TYPE STRING,
STAUV TYPE STRING,
ANZAL TYPE STRING,
DATUMJAHR_2400 TYPE STRING,
KENNR TYPE STRING,
NRMAT TYPE STRING,
RMONT TYPE STRING,
RYEAR TYPE STRING,
EIGENMAAK_DEC6 TYPE STRING,
EIGENMAEH_DEC6 TYPE STRING,
FILEN TYPE STRING,
MESNP TYPE STRING,
RECMO_LU TYPE STRING,
RECMO_BE TYPE STRING,
RECMO_NL TYPE STRING,
REFNR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_V50GSMAB_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_V50GSMAB_STR-LFDNR sy-vline 
WA_V50GSMAB_STR-MKMAL sy-vline 
WA_V50GSMAB_STR-AUSPR sy-vline 
WA_V50GSMAB_STR-MORED sy-vline 
WA_V50GSMAB_STR-SEGMT sy-vline 
WA_V50GSMAB_STR-MEART sy-vline 
WA_V50GSMAB_STR-UVLEV sy-vline 
WA_V50GSMAB_STR-UVMEI sy-vline 
WA_V50GSMAB_STR-UVMEW sy-vline 
WA_V50GSMAB_STR-RECMO sy-vline 
WA_V50GSMAB_STR-METYP sy-vline 
WA_V50GSMAB_STR-INCPL sy-vline 
WA_V50GSMAB_STR-TECDE sy-vline 
WA_V50GSMAB_STR-MTEXT sy-vline 
WA_V50GSMAB_STR-MTXT2 sy-vline 
WA_V50GSMAB_STR-UVSTA sy-vline 
WA_V50GSMAB_STR-ACSTA sy-vline 
WA_V50GSMAB_STR-KONTA sy-vline 
WA_V50GSMAB_STR-FIADR sy-vline 
WA_V50GSMAB_STR-RLFDN sy-vline 
WA_V50GSMAB_STR-VARI1 sy-vline 
WA_V50GSMAB_STR-VARI2 sy-vline 
WA_V50GSMAB_STR-VARI3 sy-vline 
WA_V50GSMAB_STR-VARI4 sy-vline 
WA_V50GSMAB_STR-VARI5 sy-vline 
WA_V50GSMAB_STR-VARI6 sy-vline 
WA_V50GSMAB_STR-VARI7 sy-vline 
WA_V50GSMAB_STR-VARI8 sy-vline 
WA_V50GSMAB_STR-MEDI1 sy-vline 
WA_V50GSMAB_STR-MEDI2 sy-vline 
WA_V50GSMAB_STR-MEDI3 sy-vline 
WA_V50GSMAB_STR-MEDI4 sy-vline 
WA_V50GSMAB_STR-MEDI5 sy-vline 
WA_V50GSMAB_STR-MEDI6 sy-vline 
WA_V50GSMAB_STR-MEDI7 sy-vline 
WA_V50GSMAB_STR-MEDI8 sy-vline 
WA_V50GSMAB_STR-MEDTX sy-vline 
WA_V50GSMAB_STR-METTX sy-vline 
WA_V50GSMAB_STR-SUM_RECHNWEAK sy-vline 
WA_V50GSMAB_STR-SUM_RECHNWEEH sy-vline 
WA_V50GSMAB_STR-SUM_GRENZWEAK sy-vline 
WA_V50GSMAB_STR-SUM_GRENZWEEH sy-vline 
WA_V50GSMAB_STR-SUM_EIGENMAAK sy-vline 
WA_V50GSMAB_STR-SUM_EIGENMAEH sy-vline 
WA_V50GSMAB_STR-RECMO_ES sy-vline 
WA_V50GSMAB_STR-STAUV sy-vline 
WA_V50GSMAB_STR-ANZAL sy-vline 
WA_V50GSMAB_STR-DATUMJAHR_2400 sy-vline 
WA_V50GSMAB_STR-KENNR sy-vline 
WA_V50GSMAB_STR-NRMAT sy-vline 
WA_V50GSMAB_STR-RMONT sy-vline 
WA_V50GSMAB_STR-RYEAR sy-vline 
WA_V50GSMAB_STR-EIGENMAAK_DEC6 sy-vline 
WA_V50GSMAB_STR-EIGENMAEH_DEC6 sy-vline 
WA_V50GSMAB_STR-FILEN sy-vline 
WA_V50GSMAB_STR-MESNP sy-vline 
WA_V50GSMAB_STR-RECMO_LU sy-vline 
WA_V50GSMAB_STR-RECMO_BE sy-vline 
WA_V50GSMAB_STR-RECMO_NL sy-vline 
WA_V50GSMAB_STR-REFNR sy-vline      INTO ld_text SEPARATED BY SPACE.

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