ABAP Select data from SAP table UMK_MB100 into internal table

Get Example source ABAP code based on a different SAP table
  Get ABAP code

Below is a number of ABAP code snippets to demonstrate how to select data from SAP UMK_MB100 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 UMK_MB100. 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 UMK_MB100 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_UMK_MB100 TYPE STANDARD TABLE OF UMK_MB100,
      WA_UMK_MB100 TYPE UMK_MB100,
      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: <UMK_MB100> TYPE UMK_MB100.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_UMK_MB100.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM UMK_MB100
  INTO TABLE IT_UMK_MB100.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM UMK_MB100
*  INTO TABLE @DATA(IT_UMK_MB1002).
*--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_UMK_MB100 INDEX 1 INTO DATA(WA_UMK_MB1002).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_UMK_MB100 ASSIGNING <UMK_MB100>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<UMK_MB100>-MEAS = 1.
<UMK_MB100>-OBJVERS = 1.
<UMK_MB100>-OBJSTAT = 1.
<UMK_MB100>-CONTREL = 1.
<UMK_MB100>-CONTTIMESTMP = 1.

ENDLOOP.

LOOP AT IT_UMK_MB100 INTO WA_UMK_MB100.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_UMK_MB100-OWNER, sy-vline,
  WA_UMK_MB100-BWAPPL, sy-vline,
  WA_UMK_MB100-ACTIVFL, sy-vline,
  WA_UMK_MB100-TSTPNM, sy-vline,
  WA_UMK_MB100-TIMESTMP, sy-vline,
  WA_UMK_MB100-BDSDOCID, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_UMK_MB100 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_UMK_MB100 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_UMK_MB100 INTO WA_UMK_MB100.


*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_UMK_MB100_STR, 
MEAS TYPE STRING,
OBJVERS TYPE STRING,
OBJSTAT TYPE STRING,
CONTREL TYPE STRING,
CONTTIMESTMP TYPE STRING,
OWNER TYPE STRING,
BWAPPL TYPE STRING,
ACTIVFL TYPE STRING,
TSTPNM TYPE STRING,
TIMESTMP TYPE STRING,
BDSDOCID TYPE STRING,
MOWNER TYPE STRING,
VALTYPE TYPE STRING,
UNIT TYPE STRING,
INDFLG TYPE STRING,
DIRECTION TYPE STRING,
DECIMALS TYPE STRING,
POSCAT TYPE STRING,
SIGN_REV TYPE STRING,
KF_TYPE TYPE STRING,
MEASSCALE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_UMK_MB100_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_UMK_MB100_STR-MEAS sy-vline 
WA_UMK_MB100_STR-OBJVERS sy-vline 
WA_UMK_MB100_STR-OBJSTAT sy-vline 
WA_UMK_MB100_STR-CONTREL sy-vline 
WA_UMK_MB100_STR-CONTTIMESTMP sy-vline 
WA_UMK_MB100_STR-OWNER sy-vline 
WA_UMK_MB100_STR-BWAPPL sy-vline 
WA_UMK_MB100_STR-ACTIVFL sy-vline 
WA_UMK_MB100_STR-TSTPNM sy-vline 
WA_UMK_MB100_STR-TIMESTMP sy-vline 
WA_UMK_MB100_STR-BDSDOCID sy-vline 
WA_UMK_MB100_STR-MOWNER sy-vline 
WA_UMK_MB100_STR-VALTYPE sy-vline 
WA_UMK_MB100_STR-UNIT sy-vline 
WA_UMK_MB100_STR-INDFLG sy-vline 
WA_UMK_MB100_STR-DIRECTION sy-vline 
WA_UMK_MB100_STR-DECIMALS sy-vline 
WA_UMK_MB100_STR-POSCAT sy-vline 
WA_UMK_MB100_STR-SIGN_REV sy-vline 
WA_UMK_MB100_STR-KF_TYPE sy-vline 
WA_UMK_MB100_STR-MEASSCALE sy-vline      INTO ld_text SEPARATED BY SPACE.

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