ABAP Select data from SAP table SDM_AMOUNTS into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM SDM_AMOUNTS
*  INTO TABLE @DATA(IT_SDM_AMOUNTS2).
*--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_SDM_AMOUNTS INDEX 1 INTO DATA(WA_SDM_AMOUNTS2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<SDM_AMOUNTS>-MRPELEMENTCATEGORY = 1.
<SDM_AMOUNTS>-MRPELEMENT = 1.
<SDM_AMOUNTS>-MRPELEMENTITEM = 1.
<SDM_AMOUNTS>-MRPELEMENTITEMSCHEDULELINE = 1.
<SDM_AMOUNTS>-MRPPLANT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_SDM_AMOUNTS-MATERIAL, sy-vline,
  WA_SDM_AMOUNTS-SCHEDULELINEQTY, sy-vline,
  WA_SDM_AMOUNTS-MRPELEMENTITEMUNIT, sy-vline,
  WA_SDM_AMOUNTS-AMOUNTINCOMPANYCODECURR, sy-vline,
  WA_SDM_AMOUNTS-COMPANYCURRENCY, sy-vline,
  WA_SDM_AMOUNTS-AMOUNTINDOCUMENTCURR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_SDM_AMOUNTS 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_SDM_AMOUNTS 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_SDM_AMOUNTS INTO WA_SDM_AMOUNTS.


*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_SDM_AMOUNTS-MATERIAL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_SDM_AMOUNTS-MATERIAL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field MRPELEMENTITEMUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_SDM_AMOUNTS-MRPELEMENTITEMUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_SDM_AMOUNTS-MRPELEMENTITEMUNIT.
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_SDM_AMOUNTS_STR, 
MRPELEMENTCATEGORY TYPE STRING,
MRPELEMENT TYPE STRING,
MRPELEMENTITEM TYPE STRING,
MRPELEMENTITEMSCHEDULELINE TYPE STRING,
MRPPLANT TYPE STRING,
MATERIAL TYPE STRING,
SCHEDULELINEQTY TYPE STRING,
MRPELEMENTITEMUNIT TYPE STRING,
AMOUNTINCOMPANYCODECURR TYPE STRING,
COMPANYCURRENCY TYPE STRING,
AMOUNTINDOCUMENTCURR TYPE STRING,
DOCUMENTCURRENCY TYPE STRING,
COMPANYCURRENCYPRECISION TYPE STRING,
AMOUNTINCOMPANYCODECURR_E TYPE STRING,
AMOUNTINDOCUMENTCURR_E TYPE STRING,END OF T_EKKO_STR.
DATA: WA_SDM_AMOUNTS_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_SDM_AMOUNTS_STR-MRPELEMENTCATEGORY sy-vline 
WA_SDM_AMOUNTS_STR-MRPELEMENT sy-vline 
WA_SDM_AMOUNTS_STR-MRPELEMENTITEM sy-vline 
WA_SDM_AMOUNTS_STR-MRPELEMENTITEMSCHEDULELINE sy-vline 
WA_SDM_AMOUNTS_STR-MRPPLANT sy-vline 
WA_SDM_AMOUNTS_STR-MATERIAL sy-vline 
WA_SDM_AMOUNTS_STR-SCHEDULELINEQTY sy-vline 
WA_SDM_AMOUNTS_STR-MRPELEMENTITEMUNIT sy-vline 
WA_SDM_AMOUNTS_STR-AMOUNTINCOMPANYCODECURR sy-vline 
WA_SDM_AMOUNTS_STR-COMPANYCURRENCY sy-vline 
WA_SDM_AMOUNTS_STR-AMOUNTINDOCUMENTCURR sy-vline 
WA_SDM_AMOUNTS_STR-DOCUMENTCURRENCY sy-vline 
WA_SDM_AMOUNTS_STR-COMPANYCURRENCYPRECISION sy-vline 
WA_SDM_AMOUNTS_STR-AMOUNTINCOMPANYCODECURR_E sy-vline 
WA_SDM_AMOUNTS_STR-AMOUNTINDOCUMENTCURR_E sy-vline      INTO ld_text SEPARATED BY SPACE.

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