ABAP Select data from SAP table CMALFUNCCODES into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CMALFUNCCODES
*  INTO TABLE @DATA(IT_CMALFUNCCODES2).
*--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_CMALFUNCCODES INDEX 1 INTO DATA(WA_CMALFUNCCODES2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CMALFUNCCODES>-MANDT = 1.
<CMALFUNCCODES>-INSPECTIONCATALOG = 1.
<CMALFUNCCODES>-INSPECTIONCODEGROUP = 1.
<CMALFUNCCODES>-INSPECTIONCODE = 1.
<CMALFUNCCODES>-CODEISINACTIVE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CMALFUNCCODES-INSPECTIONCODETEXT, sy-vline,
  WA_CMALFUNCCODES-MAINTENANCENOTIFICATION, sy-vline,
  WA_CMALFUNCCODES-CATALOGTYPE, sy-vline,
  WA_CMALFUNCCODES-NOTIFICATIONTYPE, sy-vline,
  WA_CMALFUNCCODES-CATALOGPROFILE, sy-vline,
ENDLOOP.
   
*Add any further fields from structure WA_CMALFUNCCODES 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_CMALFUNCCODES 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_CMALFUNCCODES INTO WA_CMALFUNCCODES.


*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 ALPHA, internal->external for field MAINTENANCENOTIFICATION
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CMALFUNCCODES-MAINTENANCENOTIFICATION
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CMALFUNCCODES-MAINTENANCENOTIFICATION.
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_CMALFUNCCODES_STR, 
MANDT TYPE STRING,
INSPECTIONCATALOG TYPE STRING,
INSPECTIONCODEGROUP TYPE STRING,
INSPECTIONCODE TYPE STRING,
CODEISINACTIVE TYPE STRING,
INSPECTIONCODETEXT TYPE STRING,
MAINTENANCENOTIFICATION TYPE STRING,
CATALOGTYPE TYPE STRING,
NOTIFICATIONTYPE TYPE STRING,
CATALOGPROFILE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CMALFUNCCODES_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_CMALFUNCCODES_STR-MANDT sy-vline 
WA_CMALFUNCCODES_STR-INSPECTIONCATALOG sy-vline 
WA_CMALFUNCCODES_STR-INSPECTIONCODEGROUP sy-vline 
WA_CMALFUNCCODES_STR-INSPECTIONCODE sy-vline 
WA_CMALFUNCCODES_STR-CODEISINACTIVE sy-vline 
WA_CMALFUNCCODES_STR-INSPECTIONCODETEXT sy-vline 
WA_CMALFUNCCODES_STR-MAINTENANCENOTIFICATION sy-vline 
WA_CMALFUNCCODES_STR-CATALOGTYPE sy-vline 
WA_CMALFUNCCODES_STR-NOTIFICATIONTYPE sy-vline 
WA_CMALFUNCCODES_STR-CATALOGPROFILE sy-vline      INTO ld_text SEPARATED BY SPACE.

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