ABAP Select data from SAP table MBILDTAB into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM MBILDTAB
*  INTO TABLE @DATA(IT_MBILDTAB2).
*--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_MBILDTAB INDEX 1 INTO DATA(WA_MBILDTAB2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<MBILDTAB>-AUSWG = 1.
<MBILDTAB>-PSTAT = 1.
<MBILDTAB>-RPSTA = 1.
<MBILDTAB>-GUIFU = 1.
<MBILDTAB>-DYTXT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_MBILDTAB-KZSEL, sy-vline,
  WA_MBILDTAB-KZAKT, sy-vline,
  WA_MBILDTAB-KZDIR, sy-vline,
  WA_MBILDTAB-KZBAR, sy-vline,
  WA_MBILDTAB-KZANZ, sy-vline,
  WA_MBILDTAB-KZPRO, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_MBILDTAB 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_MBILDTAB 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_MBILDTAB INTO WA_MBILDTAB.


*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_MBILDTAB_STR, 
AUSWG TYPE STRING,
PSTAT TYPE STRING,
RPSTA TYPE STRING,
GUIFU TYPE STRING,
DYTXT TYPE STRING,
KZSEL TYPE STRING,
KZAKT TYPE STRING,
KZDIR TYPE STRING,
KZBAR TYPE STRING,
KZANZ TYPE STRING,
KZPRO TYPE STRING,
IDXBD TYPE STRING,
GUIST TYPE STRING,
NOSTU TYPE STRING,END OF T_EKKO_STR.
DATA: WA_MBILDTAB_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_MBILDTAB_STR-AUSWG sy-vline 
WA_MBILDTAB_STR-PSTAT sy-vline 
WA_MBILDTAB_STR-RPSTA sy-vline 
WA_MBILDTAB_STR-GUIFU sy-vline 
WA_MBILDTAB_STR-DYTXT sy-vline 
WA_MBILDTAB_STR-KZSEL sy-vline 
WA_MBILDTAB_STR-KZAKT sy-vline 
WA_MBILDTAB_STR-KZDIR sy-vline 
WA_MBILDTAB_STR-KZBAR sy-vline 
WA_MBILDTAB_STR-KZANZ sy-vline 
WA_MBILDTAB_STR-KZPRO sy-vline 
WA_MBILDTAB_STR-IDXBD sy-vline 
WA_MBILDTAB_STR-GUIST sy-vline 
WA_MBILDTAB_STR-NOSTU sy-vline      INTO ld_text SEPARATED BY SPACE.

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