ABAP Select data from SAP table IAPPRCHMSC 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 IAPPRCHMSC 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 IAPPRCHMSC. 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 IAPPRCHMSC 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_IAPPRCHMSC TYPE STANDARD TABLE OF IAPPRCHMSC,
      WA_IAPPRCHMSC TYPE IAPPRCHMSC,
      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: <IAPPRCHMSC> TYPE IAPPRCHMSC.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM IAPPRCHMSC
*  INTO TABLE @DATA(IT_IAPPRCHMSC2).
*--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_IAPPRCHMSC INDEX 1 INTO DATA(WA_IAPPRCHMSC2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<IAPPRCHMSC>-MANDT = 1.
<IAPPRCHMSC>-CHEMICALUUID = 1.
<IAPPRCHMSC>-EHSLOCATIONUUID = 1.
<IAPPRCHMSC>-METHODOFUSE = 1.
<IAPPRCHMSC>-MATERIAL = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_IAPPRCHMSC-LISTEDSUBSTANCEUUID, sy-vline,
  WA_IAPPRCHMSC-ECDANGERCATEGORY, sy-vline,
  WA_IAPPRCHMSC-GHSHAZARDCLASSCATEGORY, sy-vline,
  WA_IAPPRCHMSC-CHEMICALAPPROVALUUID, sy-vline,
  WA_IAPPRCHMSC-OVERALLCHEMICALAPPROVALSTATUS, sy-vline,
  WA_IAPPRCHMSC-CHEMICALTYPE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_IAPPRCHMSC 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_IAPPRCHMSC 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_IAPPRCHMSC INTO WA_IAPPRCHMSC.


*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 DFVAL, internal->external for field CHEMICALTYPE
CALL FUNCTION 'CONVERSION_EXIT_DFVAL_OUTPUT'
  EXPORTING
    input =                      WA_IAPPRCHMSC-CHEMICALTYPE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IAPPRCHMSC-CHEMICALTYPE.
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_IAPPRCHMSC_STR, 
MANDT TYPE STRING,
CHEMICALUUID TYPE STRING,
EHSLOCATIONUUID TYPE STRING,
METHODOFUSE TYPE STRING,
MATERIAL TYPE STRING,
LISTEDSUBSTANCEUUID TYPE STRING,
ECDANGERCATEGORY TYPE STRING,
GHSHAZARDCLASSCATEGORY TYPE STRING,
CHEMICALAPPROVALUUID TYPE STRING,
OVERALLCHEMICALAPPROVALSTATUS TYPE STRING,
CHEMICALTYPE TYPE STRING,
CHEMICALREVISIONUUID TYPE STRING,
CHEMICALHZDSINGREDIENTLIST TYPE STRING,
ECDANGERCATEGORYNAMELIST TYPE STRING,
ECRISKPHRASENAMELIST TYPE STRING,
GHSHAZARDCLASSCATEGORYNAMES TYPE STRING,
GHSHAZARDSTATEMENTNAMES TYPE STRING,
NAMEOFCHEMICAL TYPE STRING,
EHSLOCATIONNAME TYPE STRING,
METHODOFUSENAME TYPE STRING,END OF T_EKKO_STR.
DATA: WA_IAPPRCHMSC_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_IAPPRCHMSC_STR-MANDT sy-vline 
WA_IAPPRCHMSC_STR-CHEMICALUUID sy-vline 
WA_IAPPRCHMSC_STR-EHSLOCATIONUUID sy-vline 
WA_IAPPRCHMSC_STR-METHODOFUSE sy-vline 
WA_IAPPRCHMSC_STR-MATERIAL sy-vline 
WA_IAPPRCHMSC_STR-LISTEDSUBSTANCEUUID sy-vline 
WA_IAPPRCHMSC_STR-ECDANGERCATEGORY sy-vline 
WA_IAPPRCHMSC_STR-GHSHAZARDCLASSCATEGORY sy-vline 
WA_IAPPRCHMSC_STR-CHEMICALAPPROVALUUID sy-vline 
WA_IAPPRCHMSC_STR-OVERALLCHEMICALAPPROVALSTATUS sy-vline 
WA_IAPPRCHMSC_STR-CHEMICALTYPE sy-vline 
WA_IAPPRCHMSC_STR-CHEMICALREVISIONUUID sy-vline 
WA_IAPPRCHMSC_STR-CHEMICALHZDSINGREDIENTLIST sy-vline 
WA_IAPPRCHMSC_STR-ECDANGERCATEGORYNAMELIST sy-vline 
WA_IAPPRCHMSC_STR-ECRISKPHRASENAMELIST sy-vline 
WA_IAPPRCHMSC_STR-GHSHAZARDCLASSCATEGORYNAMES sy-vline 
WA_IAPPRCHMSC_STR-GHSHAZARDSTATEMENTNAMES sy-vline 
WA_IAPPRCHMSC_STR-NAMEOFCHEMICAL sy-vline 
WA_IAPPRCHMSC_STR-EHSLOCATIONNAME sy-vline 
WA_IAPPRCHMSC_STR-METHODOFUSENAME sy-vline      INTO ld_text SEPARATED BY SPACE.

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