ABAP Select data from SAP table CCGLC_MPD into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CCGLC_MPD
*  INTO TABLE @DATA(IT_CCGLC_MPD2).
*--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_CCGLC_MPD INDEX 1 INTO DATA(WA_CCGLC_MPD2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CCGLC_MPD>-MANDT = 1.
<CCGLC_MPD>-SCENID = 1.
<CCGLC_MPD>-SUBPROG = 1.
<CCGLC_MPD>-SUBDYNNR = 1.
<CCGLC_MPD>-FBOKCODE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CCGLC_MPD-FBOPEN, sy-vline,
  WA_CCGLC_MPD-FBCLOSE, sy-vline,
  WA_CCGLC_MPD-FBDATAGET, sy-vline,
  WA_CCGLC_MPD-FBDATACHECK, sy-vline,
  WA_CCGLC_MPD-FBLABELDET, sy-vline,
  WA_CCGLC_MPD-REGTEXTICON, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CCGLC_MPD 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_CCGLC_MPD 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_CCGLC_MPD INTO WA_CCGLC_MPD.


*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.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_CCGLC_MPD_STR, 
MANDT TYPE STRING,
SCENID TYPE STRING,
SUBPROG TYPE STRING,
SUBDYNNR TYPE STRING,
FBOKCODE TYPE STRING,
FBOPEN TYPE STRING,
FBCLOSE TYPE STRING,
FBDATAGET TYPE STRING,
FBDATACHECK TYPE STRING,
FBLABELDET TYPE STRING,
REGTEXTICON TYPE STRING,
SORT TYPE STRING,
FBSTATEDET TYPE STRING,
FBSTATEGEN TYPE STRING,
STATECHECKMOD TYPE STRING,
SCENGRP TYPE STRING,
RVLID TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CCGLC_MPD_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_CCGLC_MPD_STR-MANDT sy-vline 
WA_CCGLC_MPD_STR-SCENID sy-vline 
WA_CCGLC_MPD_STR-SUBPROG sy-vline 
WA_CCGLC_MPD_STR-SUBDYNNR sy-vline 
WA_CCGLC_MPD_STR-FBOKCODE sy-vline 
WA_CCGLC_MPD_STR-FBOPEN sy-vline 
WA_CCGLC_MPD_STR-FBCLOSE sy-vline 
WA_CCGLC_MPD_STR-FBDATAGET sy-vline 
WA_CCGLC_MPD_STR-FBDATACHECK sy-vline 
WA_CCGLC_MPD_STR-FBLABELDET sy-vline 
WA_CCGLC_MPD_STR-REGTEXTICON sy-vline 
WA_CCGLC_MPD_STR-SORT sy-vline 
WA_CCGLC_MPD_STR-FBSTATEDET sy-vline 
WA_CCGLC_MPD_STR-FBSTATEGEN sy-vline 
WA_CCGLC_MPD_STR-STATECHECKMOD sy-vline 
WA_CCGLC_MPD_STR-SCENGRP sy-vline 
WA_CCGLC_MPD_STR-RVLID sy-vline      INTO ld_text SEPARATED BY SPACE.

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