ABAP Select data from SAP table CCMBCHLANLCMPTN into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CCMBCHLANLCMPTN
*  INTO TABLE @DATA(IT_CCMBCHLANLCMPTN2).
*--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_CCMBCHLANLCMPTN INDEX 1 INTO DATA(WA_CCMBCHLANLCMPTN2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CCMBCHLANLCMPTN>-MANDT = 1.
<CCMBCHLANLCMPTN>-CHMLCMPLNCINFOUUID = 1.
<CCMBCHLANLCMPTN>-CHMLCOMPOSITIONUUID = 1.
<CCMBCHLANLCMPTN>-CHMLCOMPUUID = 1.
<CCMBCHLANLCMPTN>-SUBSTANCEUUID = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CCMBCHLANLCMPTN-SUBSTANCENAME, sy-vline,
  WA_CCMBCHLANLCMPTN-CASNUMBER, sy-vline,
  WA_CCMBCHLANLCMPTN-CHMLCOMPQTY, sy-vline,
  WA_CCMBCHLANLCMPTN-CHMLCOMPQTYUNIT, sy-vline,
  WA_CCMBCHLANLCMPTN-CMBNDCHMLCOMPCONCNRANGETEXT, sy-vline,
  WA_CCMBCHLANLCMPTN-CHMLCOMPOSITIONSTATUSNAME, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CCMBCHLANLCMPTN 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_CCMBCHLANLCMPTN 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_CCMBCHLANLCMPTN INTO WA_CCMBCHLANLCMPTN.


*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 CUNIT, internal->external for field CHMLCOMPQTYUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_CCMBCHLANLCMPTN-CHMLCOMPQTYUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CCMBCHLANLCMPTN-CHMLCOMPQTYUNIT.
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_CCMBCHLANLCMPTN_STR, 
MANDT TYPE STRING,
CHMLCMPLNCINFOUUID TYPE STRING,
CHMLCOMPOSITIONUUID TYPE STRING,
CHMLCOMPUUID TYPE STRING,
SUBSTANCEUUID TYPE STRING,
SUBSTANCENAME TYPE STRING,
CASNUMBER TYPE STRING,
CHMLCOMPQTY TYPE STRING,
CHMLCOMPQTYUNIT TYPE STRING,
CMBNDCHMLCOMPCONCNRANGETEXT TYPE STRING,
CHMLCOMPOSITIONSTATUSNAME TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CCMBCHLANLCMPTN_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_CCMBCHLANLCMPTN_STR-MANDT sy-vline 
WA_CCMBCHLANLCMPTN_STR-CHMLCMPLNCINFOUUID sy-vline 
WA_CCMBCHLANLCMPTN_STR-CHMLCOMPOSITIONUUID sy-vline 
WA_CCMBCHLANLCMPTN_STR-CHMLCOMPUUID sy-vline 
WA_CCMBCHLANLCMPTN_STR-SUBSTANCEUUID sy-vline 
WA_CCMBCHLANLCMPTN_STR-SUBSTANCENAME sy-vline 
WA_CCMBCHLANLCMPTN_STR-CASNUMBER sy-vline 
WA_CCMBCHLANLCMPTN_STR-CHMLCOMPQTY sy-vline 
WA_CCMBCHLANLCMPTN_STR-CHMLCOMPQTYUNIT sy-vline 
WA_CCMBCHLANLCMPTN_STR-CMBNDCHMLCOMPCONCNRANGETEXT sy-vline 
WA_CCMBCHLANLCMPTN_STR-CHMLCOMPOSITIONSTATUSNAME sy-vline      INTO ld_text SEPARATED BY SPACE.

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