ABAP Select data from SAP table MMIM_V_T149 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP MMIM_V_T149 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 MMIM_V_T149. 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 MMIM_V_T149 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_MMIM_V_T149 TYPE STANDARD TABLE OF MMIM_V_T149,
      WA_MMIM_V_T149 TYPE MMIM_V_T149,
      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: <MMIM_V_T149> TYPE MMIM_V_T149.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_MMIM_V_T149.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM MMIM_V_T149
  INTO TABLE IT_MMIM_V_T149.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM MMIM_V_T149
*  INTO TABLE @DATA(IT_MMIM_V_T1492).
*--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_MMIM_V_T149 INDEX 1 INTO DATA(WA_MMIM_V_T1492).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_MMIM_V_T149 ASSIGNING <MMIM_V_T149>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<MMIM_V_T149>-MANDT = 1.
<MMIM_V_T149>-BWKEY = 1.
<MMIM_V_T149>-BWTTY = 1.
<MMIM_V_T149>-BTBEZ = 1.
<MMIM_V_T149>-VBWAF = 1.

ENDLOOP.

LOOP AT IT_MMIM_V_T149 INTO WA_MMIM_V_T149.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_MMIM_V_T149-KZVBF, sy-vline,
  WA_MMIM_V_T149-VBWAE, sy-vline,
  WA_MMIM_V_T149-KZVBE, sy-vline,
  WA_MMIM_V_T149-KZBAA, sy-vline,
  WA_MMIM_V_T149-VBWAA, sy-vline,
  WA_MMIM_V_T149-KZVBA, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_MMIM_V_T149 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_MMIM_V_T149 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_MMIM_V_T149 INTO WA_MMIM_V_T149.


*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_MMIM_V_T149_STR, 
MANDT TYPE STRING,
BWKEY TYPE STRING,
BWTTY TYPE STRING,
BTBEZ TYPE STRING,
VBWAF TYPE STRING,
KZVBF TYPE STRING,
VBWAE TYPE STRING,
KZVBE TYPE STRING,
KZBAA TYPE STRING,
VBWAA TYPE STRING,
KZVBA TYPE STRING,END OF T_EKKO_STR.
DATA: WA_MMIM_V_T149_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_MMIM_V_T149_STR-MANDT sy-vline 
WA_MMIM_V_T149_STR-BWKEY sy-vline 
WA_MMIM_V_T149_STR-BWTTY sy-vline 
WA_MMIM_V_T149_STR-BTBEZ sy-vline 
WA_MMIM_V_T149_STR-VBWAF sy-vline 
WA_MMIM_V_T149_STR-KZVBF sy-vline 
WA_MMIM_V_T149_STR-VBWAE sy-vline 
WA_MMIM_V_T149_STR-KZVBE sy-vline 
WA_MMIM_V_T149_STR-KZBAA sy-vline 
WA_MMIM_V_T149_STR-VBWAA sy-vline 
WA_MMIM_V_T149_STR-KZVBA sy-vline      INTO ld_text SEPARATED BY SPACE.

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