ABAP Select data from SAP table IGMBLGELMETRFLW into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM IGMBLGELMETRFLW
*  INTO TABLE @DATA(IT_IGMBLGELMETRFLW2).
*--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_IGMBLGELMETRFLW INDEX 1 INTO DATA(WA_IGMBLGELMETRFLW2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<IGMBLGELMETRFLW>-MANDT = 1.
<IGMBLGELMETRFLW>-GTEEMBILLGELMNTENTRITMFLOWUUID = 1.
<IGMBLGELMETRFLW>-GTEEMBILLGELMNTENTRITMUUID = 1.
<IGMBLGELMETRFLW>-GTEEMBILLINGELEMENTUUID = 1.
<IGMBLGELMETRFLW>-BILLINGDOCUMENT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_IGMBLGELMETRFLW-BILLINGDOCUMENTITEM, sy-vline,
  WA_IGMBLGELMETRFLW-BILLINGDOCUMENTTYPE, sy-vline,
  WA_IGMBLGELMETRFLW-SDDOCUMENTCATEGORY, sy-vline,
  WA_IGMBLGELMETRFLW-PRECEDINGDOCUMENT, sy-vline,
  WA_IGMBLGELMETRFLW-PRECEDINGDOCUMENTITEM, sy-vline,
  WA_IGMBLGELMETRFLW-PRECEDINGDOCUMENTTYPE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_IGMBLGELMETRFLW 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_IGMBLGELMETRFLW 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_IGMBLGELMETRFLW INTO WA_IGMBLGELMETRFLW.


*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 BILLINGDOCUMENT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_IGMBLGELMETRFLW-BILLINGDOCUMENT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IGMBLGELMETRFLW-BILLINGDOCUMENT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field PRECEDINGDOCUMENT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_IGMBLGELMETRFLW-PRECEDINGDOCUMENT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IGMBLGELMETRFLW-PRECEDINGDOCUMENT.
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_IGMBLGELMETRFLW_STR, 
MANDT TYPE STRING,
GTEEMBILLGELMNTENTRITMFLOWUUID TYPE STRING,
GTEEMBILLGELMNTENTRITMUUID TYPE STRING,
GTEEMBILLINGELEMENTUUID TYPE STRING,
BILLINGDOCUMENT TYPE STRING,
BILLINGDOCUMENTITEM TYPE STRING,
BILLINGDOCUMENTTYPE TYPE STRING,
SDDOCUMENTCATEGORY TYPE STRING,
PRECEDINGDOCUMENT TYPE STRING,
PRECEDINGDOCUMENTITEM TYPE STRING,
PRECEDINGDOCUMENTTYPE TYPE STRING,
BILLINGDATE TYPE STRING,
DOCUMENTBILLINGSTATUS TYPE STRING,
DOCUMENTCURRENCY TYPE STRING,
BILLGINPROCAMTINDOCCRCY TYPE STRING,
BILLEDREVENUEAMTINDOCCRCY TYPE STRING,
GTEEMBILLGELMNTFLWCRTEDBYUSER TYPE STRING,
GTEEMBILLGELMNTFLWCRTEDTETME TYPE STRING,
GTEEMBILLGELMNTFLWCHGDBYUSER TYPE STRING,
GTEEMBILLGELMNTFLWCHGDATDTETME TYPE STRING,END OF T_EKKO_STR.
DATA: WA_IGMBLGELMETRFLW_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_IGMBLGELMETRFLW_STR-MANDT sy-vline 
WA_IGMBLGELMETRFLW_STR-GTEEMBILLGELMNTENTRITMFLOWUUID sy-vline 
WA_IGMBLGELMETRFLW_STR-GTEEMBILLGELMNTENTRITMUUID sy-vline 
WA_IGMBLGELMETRFLW_STR-GTEEMBILLINGELEMENTUUID sy-vline 
WA_IGMBLGELMETRFLW_STR-BILLINGDOCUMENT sy-vline 
WA_IGMBLGELMETRFLW_STR-BILLINGDOCUMENTITEM sy-vline 
WA_IGMBLGELMETRFLW_STR-BILLINGDOCUMENTTYPE sy-vline 
WA_IGMBLGELMETRFLW_STR-SDDOCUMENTCATEGORY sy-vline 
WA_IGMBLGELMETRFLW_STR-PRECEDINGDOCUMENT sy-vline 
WA_IGMBLGELMETRFLW_STR-PRECEDINGDOCUMENTITEM sy-vline 
WA_IGMBLGELMETRFLW_STR-PRECEDINGDOCUMENTTYPE sy-vline 
WA_IGMBLGELMETRFLW_STR-BILLINGDATE sy-vline 
WA_IGMBLGELMETRFLW_STR-DOCUMENTBILLINGSTATUS sy-vline 
WA_IGMBLGELMETRFLW_STR-DOCUMENTCURRENCY sy-vline 
WA_IGMBLGELMETRFLW_STR-BILLGINPROCAMTINDOCCRCY sy-vline 
WA_IGMBLGELMETRFLW_STR-BILLEDREVENUEAMTINDOCCRCY sy-vline 
WA_IGMBLGELMETRFLW_STR-GTEEMBILLGELMNTFLWCRTEDBYUSER sy-vline 
WA_IGMBLGELMETRFLW_STR-GTEEMBILLGELMNTFLWCRTEDTETME sy-vline 
WA_IGMBLGELMETRFLW_STR-GTEEMBILLGELMNTFLWCHGDBYUSER sy-vline 
WA_IGMBLGELMETRFLW_STR-GTEEMBILLGELMNTFLWCHGDATDTETME sy-vline      INTO ld_text SEPARATED BY SPACE.

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