ABAP Select data from SAP table VBMMPT into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM VBMMPT
*  INTO TABLE @DATA(IT_VBMMPT2).
*--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_VBMMPT INDEX 1 INTO DATA(WA_VBMMPT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<VBMMPT>-UPD_KNZ = 1.
<VBMMPT>-MANDT = 1.
<VBMMPT>-WARPL = 1.
<VBMMPT>-NUMMER = 1.
<VBMMPT>-OPERATOR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_VBMMPT-ZYKL1, sy-vline,
  WA_VBMMPT-ZEIEH, sy-vline,
  WA_VBMMPT-PAK_TEXT, sy-vline,
  WA_VBMMPT-LANGU, sy-vline,
  WA_VBMMPT-POINT, sy-vline,
  WA_VBMMPT-OFFSET, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_VBMMPT 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_VBMMPT 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_VBMMPT INTO WA_VBMMPT.


*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 WARPL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_VBMMPT-WARPL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VBMMPT-WARPL.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit ISOLA, internal->external for field LANGU
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_VBMMPT-LANGU
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VBMMPT-LANGU.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field POINT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_VBMMPT-POINT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VBMMPT-POINT.
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_VBMMPT_STR, 
UPD_KNZ TYPE STRING,
MANDT TYPE STRING,
WARPL TYPE STRING,
NUMMER TYPE STRING,
OPERATOR TYPE STRING,
ZYKL1 TYPE STRING,
ZEIEH TYPE STRING,
PAK_TEXT TYPE STRING,
LANGU TYPE STRING,
POINT TYPE STRING,
OFFSET TYPE STRING,
INAKTIV TYPE STRING,
NZAEH TYPE STRING,
ZAEHL TYPE STRING,
KTEXTYZK TYPE STRING,
CYCLESEQIND TYPE STRING,
SETREPEATIND TYPE STRING,
DBKNZ TYPE STRING,END OF T_EKKO_STR.
DATA: WA_VBMMPT_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_VBMMPT_STR-UPD_KNZ sy-vline 
WA_VBMMPT_STR-MANDT sy-vline 
WA_VBMMPT_STR-WARPL sy-vline 
WA_VBMMPT_STR-NUMMER sy-vline 
WA_VBMMPT_STR-OPERATOR sy-vline 
WA_VBMMPT_STR-ZYKL1 sy-vline 
WA_VBMMPT_STR-ZEIEH sy-vline 
WA_VBMMPT_STR-PAK_TEXT sy-vline 
WA_VBMMPT_STR-LANGU sy-vline 
WA_VBMMPT_STR-POINT sy-vline 
WA_VBMMPT_STR-OFFSET sy-vline 
WA_VBMMPT_STR-INAKTIV sy-vline 
WA_VBMMPT_STR-NZAEH sy-vline 
WA_VBMMPT_STR-ZAEHL sy-vline 
WA_VBMMPT_STR-KTEXTYZK sy-vline 
WA_VBMMPT_STR-CYCLESEQIND sy-vline 
WA_VBMMPT_STR-SETREPEATIND sy-vline 
WA_VBMMPT_STR-DBKNZ sy-vline      INTO ld_text SEPARATED BY SPACE.

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