ABAP Select data from SAP table MMDA_IM_S_EXTRACT into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM MMDA_IM_S_EXTRACT
*  INTO TABLE @DATA(IT_MMDA_IM_S_EXTRACT2).
*--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_MMDA_IM_S_EXTRACT INDEX 1 INTO DATA(WA_MMDA_IM_S_EXTRACT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<MMDA_IM_S_EXTRACT>-CALDAY = 1.
<MMDA_IM_S_EXTRACT>-MATERIAL = 1.
<MMDA_IM_S_EXTRACT>-PLANT = 1.
<MMDA_IM_S_EXTRACT>-STOR_LOC = 1.
<MMDA_IM_S_EXTRACT>-BATCH = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_MMDA_IM_S_EXTRACT-STOCKTYPE, sy-vline,
  WA_MMDA_IM_S_EXTRACT-STOCKCAT, sy-vline,
  WA_MMDA_IM_S_EXTRACT-GN_VENDOR, sy-vline,
  WA_MMDA_IM_S_EXTRACT-RECVS_VAL, sy-vline,
  WA_MMDA_IM_S_EXTRACT-ISSVS_VAL, sy-vline,
  WA_MMDA_IM_S_EXTRACT-ISSBLOSTCK, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_MMDA_IM_S_EXTRACT 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_MMDA_IM_S_EXTRACT 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_MMDA_IM_S_EXTRACT INTO WA_MMDA_IM_S_EXTRACT.


*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 MATN1, internal->external for field MATERIAL
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_MMDA_IM_S_EXTRACT-MATERIAL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MMDA_IM_S_EXTRACT-MATERIAL.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit CUNIT, internal->external for field BASE_UOM
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_MMDA_IM_S_EXTRACT-BASE_UOM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MMDA_IM_S_EXTRACT-BASE_UOM.
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_MMDA_IM_S_EXTRACT_STR, 
CALDAY TYPE STRING,
MATERIAL TYPE STRING,
PLANT TYPE STRING,
STOR_LOC TYPE STRING,
BATCH TYPE STRING,
STOCKTYPE TYPE STRING,
STOCKCAT TYPE STRING,
GN_VENDOR TYPE STRING,
RECVS_VAL TYPE STRING,
ISSVS_VAL TYPE STRING,
ISSBLOSTCK TYPE STRING,
ISSCNSSTCK TYPE STRING,
ISSQMSTCK TYPE STRING,
ISSTRANSST TYPE STRING,
RECBLOSTCK TYPE STRING,
RECCNSSTCK TYPE STRING,
RECQMSTCK TYPE STRING,
RECTRANSST TYPE STRING,
ISSSCRP TYPE STRING,
ISSVALSCRP TYPE STRING,
RECTOTSTCK TYPE STRING,
ISSTOTSTCK TYPE STRING,
ISSVALSTCK TYPE STRING,
RECVALSTCK TYPE STRING,
VENCONCON TYPE STRING,
LOC_CURRENCY TYPE STRING,
BASE_UOM TYPE STRING,
CPUDT TYPE STRING,
CPUTM TYPE STRING,END OF T_EKKO_STR.
DATA: WA_MMDA_IM_S_EXTRACT_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_MMDA_IM_S_EXTRACT_STR-CALDAY sy-vline 
WA_MMDA_IM_S_EXTRACT_STR-MATERIAL sy-vline 
WA_MMDA_IM_S_EXTRACT_STR-PLANT sy-vline 
WA_MMDA_IM_S_EXTRACT_STR-STOR_LOC sy-vline 
WA_MMDA_IM_S_EXTRACT_STR-BATCH sy-vline 
WA_MMDA_IM_S_EXTRACT_STR-STOCKTYPE sy-vline 
WA_MMDA_IM_S_EXTRACT_STR-STOCKCAT sy-vline 
WA_MMDA_IM_S_EXTRACT_STR-GN_VENDOR sy-vline 
WA_MMDA_IM_S_EXTRACT_STR-RECVS_VAL sy-vline 
WA_MMDA_IM_S_EXTRACT_STR-ISSVS_VAL sy-vline 
WA_MMDA_IM_S_EXTRACT_STR-ISSBLOSTCK sy-vline 
WA_MMDA_IM_S_EXTRACT_STR-ISSCNSSTCK sy-vline 
WA_MMDA_IM_S_EXTRACT_STR-ISSQMSTCK sy-vline 
WA_MMDA_IM_S_EXTRACT_STR-ISSTRANSST sy-vline 
WA_MMDA_IM_S_EXTRACT_STR-RECBLOSTCK sy-vline 
WA_MMDA_IM_S_EXTRACT_STR-RECCNSSTCK sy-vline 
WA_MMDA_IM_S_EXTRACT_STR-RECQMSTCK sy-vline 
WA_MMDA_IM_S_EXTRACT_STR-RECTRANSST sy-vline 
WA_MMDA_IM_S_EXTRACT_STR-ISSSCRP sy-vline 
WA_MMDA_IM_S_EXTRACT_STR-ISSVALSCRP sy-vline 
WA_MMDA_IM_S_EXTRACT_STR-RECTOTSTCK sy-vline 
WA_MMDA_IM_S_EXTRACT_STR-ISSTOTSTCK sy-vline 
WA_MMDA_IM_S_EXTRACT_STR-ISSVALSTCK sy-vline 
WA_MMDA_IM_S_EXTRACT_STR-RECVALSTCK sy-vline 
WA_MMDA_IM_S_EXTRACT_STR-VENCONCON sy-vline 
WA_MMDA_IM_S_EXTRACT_STR-LOC_CURRENCY sy-vline 
WA_MMDA_IM_S_EXTRACT_STR-BASE_UOM sy-vline 
WA_MMDA_IM_S_EXTRACT_STR-CPUDT sy-vline 
WA_MMDA_IM_S_EXTRACT_STR-CPUTM sy-vline      INTO ld_text SEPARATED BY SPACE.

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