ABAP Select data from SAP table FCLMGLGROUPEPL into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FCLMGLGROUPEPL
*  INTO TABLE @DATA(IT_FCLMGLGROUPEPL2).
*--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_FCLMGLGROUPEPL INDEX 1 INTO DATA(WA_FCLMGLGROUPEPL2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FCLMGLGROUPEPL>-MANDT = 1.
<FCLMGLGROUPEPL>-SUMGROUPPING = 1.
<FCLMGLGROUPEPL>-LINETYPE = 1.
<FCLMGLGROUPEPL>-SELECTION = 1.
<FCLMGLGROUPEPL>-GLFROM = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FCLMGLGROUPEPL-GLTO, sy-vline,
  WA_FCLMGLGROUPEPL-PLANNINGLEVEL, sy-vline,
  WA_FCLMGLGROUPEPL-PLFROM, sy-vline,
  WA_FCLMGLGROUPEPL-PLTO, sy-vline,
  WA_FCLMGLGROUPEPL-BUKRS, sy-vline,
  WA_FCLMGLGROUPEPL-KTOPL, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FCLMGLGROUPEPL 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_FCLMGLGROUPEPL 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_FCLMGLGROUPEPL INTO WA_FCLMGLGROUPEPL.


*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 CKONT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FCLMGLGROUPEPL-CKONT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FCLMGLGROUPEPL-CKONT.
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_FCLMGLGROUPEPL_STR, 
MANDT TYPE STRING,
SUMGROUPPING TYPE STRING,
LINETYPE TYPE STRING,
SELECTION TYPE STRING,
GLFROM TYPE STRING,
GLTO TYPE STRING,
PLANNINGLEVEL TYPE STRING,
PLFROM TYPE STRING,
PLTO TYPE STRING,
BUKRS TYPE STRING,
KTOPL TYPE STRING,
EXCLUDE TYPE STRING,
SUMTERM TYPE STRING,
CKONT TYPE STRING,
CBUKR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FCLMGLGROUPEPL_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_FCLMGLGROUPEPL_STR-MANDT sy-vline 
WA_FCLMGLGROUPEPL_STR-SUMGROUPPING sy-vline 
WA_FCLMGLGROUPEPL_STR-LINETYPE sy-vline 
WA_FCLMGLGROUPEPL_STR-SELECTION sy-vline 
WA_FCLMGLGROUPEPL_STR-GLFROM sy-vline 
WA_FCLMGLGROUPEPL_STR-GLTO sy-vline 
WA_FCLMGLGROUPEPL_STR-PLANNINGLEVEL sy-vline 
WA_FCLMGLGROUPEPL_STR-PLFROM sy-vline 
WA_FCLMGLGROUPEPL_STR-PLTO sy-vline 
WA_FCLMGLGROUPEPL_STR-BUKRS sy-vline 
WA_FCLMGLGROUPEPL_STR-KTOPL sy-vline 
WA_FCLMGLGROUPEPL_STR-EXCLUDE sy-vline 
WA_FCLMGLGROUPEPL_STR-SUMTERM sy-vline 
WA_FCLMGLGROUPEPL_STR-CKONT sy-vline 
WA_FCLMGLGROUPEPL_STR-CBUKR sy-vline      INTO ld_text SEPARATED BY SPACE.

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