ABAP Select data from SAP table MB_SIT_PODATA into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM MB_SIT_PODATA
*  INTO TABLE @DATA(IT_MB_SIT_PODATA2).
*--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_MB_SIT_PODATA INDEX 1 INTO DATA(WA_MB_SIT_PODATA2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<MB_SIT_PODATA>-MANDT = 1.
<MB_SIT_PODATA>-EBELN = 1.
<MB_SIT_PODATA>-EBELP = 1.
<MB_SIT_PODATA>-WERKS = 1.
<MB_SIT_PODATA>-ELIKZ = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_MB_SIT_PODATA-BSTAE, sy-vline,
  WA_MB_SIT_PODATA-MEINS, sy-vline,
  WA_MB_SIT_PODATA-LMEIN, sy-vline,
  WA_MB_SIT_PODATA-UMREZ, sy-vline,
  WA_MB_SIT_PODATA-UMREN, sy-vline,
  WA_MB_SIT_PODATA-RETPO, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_MB_SIT_PODATA 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_MB_SIT_PODATA 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_MB_SIT_PODATA INTO WA_MB_SIT_PODATA.


*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 ALPHA, internal->external for field EBELN
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_MB_SIT_PODATA-EBELN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MB_SIT_PODATA-EBELN.
WRITE:/ 'New Value:', ld_input.

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

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

*Conversion exit ALPHA, internal->external for field LIFNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_MB_SIT_PODATA-LIFNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MB_SIT_PODATA-LIFNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field BELNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_MB_SIT_PODATA-BELNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MB_SIT_PODATA-BELNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field GJAHR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_MB_SIT_PODATA-GJAHR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MB_SIT_PODATA-GJAHR.
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_MB_SIT_PODATA_STR, 
MANDT TYPE STRING,
EBELN TYPE STRING,
EBELP TYPE STRING,
WERKS TYPE STRING,
ELIKZ TYPE STRING,
BSTAE TYPE STRING,
MEINS TYPE STRING,
LMEIN TYPE STRING,
UMREZ TYPE STRING,
UMREN TYPE STRING,
RETPO TYPE STRING,
KNTTP TYPE STRING,
LOEKZ TYPE STRING,
VGABE TYPE STRING,
SHKZG TYPE STRING,
ETENS TYPE STRING,
MENGE TYPE STRING,
WESBB TYPE STRING,
BAMNG TYPE STRING,
EKORG TYPE STRING,
BSTYP TYPE STRING,
LIFNR TYPE STRING,
EKGRP TYPE STRING,
SOBKZ TYPE STRING,
BELNR TYPE STRING,
GJAHR TYPE STRING,
BUZEI TYPE STRING,
/CWM/BAMNG TYPE STRING,
/CWM/WESBB TYPE STRING,
/CWM/TY2TQ TYPE STRING,END OF T_EKKO_STR.
DATA: WA_MB_SIT_PODATA_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_MB_SIT_PODATA_STR-MANDT sy-vline 
WA_MB_SIT_PODATA_STR-EBELN sy-vline 
WA_MB_SIT_PODATA_STR-EBELP sy-vline 
WA_MB_SIT_PODATA_STR-WERKS sy-vline 
WA_MB_SIT_PODATA_STR-ELIKZ sy-vline 
WA_MB_SIT_PODATA_STR-BSTAE sy-vline 
WA_MB_SIT_PODATA_STR-MEINS sy-vline 
WA_MB_SIT_PODATA_STR-LMEIN sy-vline 
WA_MB_SIT_PODATA_STR-UMREZ sy-vline 
WA_MB_SIT_PODATA_STR-UMREN sy-vline 
WA_MB_SIT_PODATA_STR-RETPO sy-vline 
WA_MB_SIT_PODATA_STR-KNTTP sy-vline 
WA_MB_SIT_PODATA_STR-LOEKZ sy-vline 
WA_MB_SIT_PODATA_STR-VGABE sy-vline 
WA_MB_SIT_PODATA_STR-SHKZG sy-vline 
WA_MB_SIT_PODATA_STR-ETENS sy-vline 
WA_MB_SIT_PODATA_STR-MENGE sy-vline 
WA_MB_SIT_PODATA_STR-WESBB sy-vline 
WA_MB_SIT_PODATA_STR-BAMNG sy-vline 
WA_MB_SIT_PODATA_STR-EKORG sy-vline 
WA_MB_SIT_PODATA_STR-BSTYP sy-vline 
WA_MB_SIT_PODATA_STR-LIFNR sy-vline 
WA_MB_SIT_PODATA_STR-EKGRP sy-vline 
WA_MB_SIT_PODATA_STR-SOBKZ sy-vline 
WA_MB_SIT_PODATA_STR-BELNR sy-vline 
WA_MB_SIT_PODATA_STR-GJAHR sy-vline 
WA_MB_SIT_PODATA_STR-BUZEI sy-vline 
WA_MB_SIT_PODATA_STR-/CWM/BAMNG sy-vline 
WA_MB_SIT_PODATA_STR-/CWM/WESBB sy-vline 
WA_MB_SIT_PODATA_STR-/CWM/TY2TQ sy-vline      INTO ld_text SEPARATED BY SPACE.

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