ABAP Select data from SAP table GMGR_DI into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM GMGR_DI
*  INTO TABLE @DATA(IT_GMGR_DI2).
*--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_GMGR_DI INDEX 1 INTO DATA(WA_GMGR_DI2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<GMGR_DI>-GRANT_DESC = 1.
<GMGR_DI>-GRANT_SHORT_DESC = 1.
<GMGR_DI>-AWARD_TYPE = 1.
<GMGR_DI>-AWARD_START = 1.
<GMGR_DI>-AWARD_END = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_GMGR_DI-FINAL_BILL_DATE, sy-vline,
  WA_GMGR_DI-LETTER_OF_CREDIT, sy-vline,
  WA_GMGR_DI-BLOCKING_IND, sy-vline,
  WA_GMGR_DI-SPLIT_OF_YEARS, sy-vline,
  WA_GMGR_DI-GRANT_FY_VARIANT, sy-vline,
  WA_GMGR_DI-GRANT_CURRENCY, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_GMGR_DI 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_GMGR_DI 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_GMGR_DI INTO WA_GMGR_DI.


*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_GMGR_DI_STR, 
GRANT_DESC TYPE STRING,
GRANT_SHORT_DESC TYPE STRING,
AWARD_TYPE TYPE STRING,
AWARD_START TYPE STRING,
AWARD_END TYPE STRING,
FINAL_BILL_DATE TYPE STRING,
LETTER_OF_CREDIT TYPE STRING,
BLOCKING_IND TYPE STRING,
SPLIT_OF_YEARS TYPE STRING,
GRANT_FY_VARIANT TYPE STRING,
GRANT_CURRENCY TYPE STRING,
GRANT_TOTAL TYPE STRING,
EXCHANGE_RATE TYPE STRING,
EXCHANGE_DATE TYPE STRING,
FROM_FACTOR TYPE STRING,
TO_FACTOR TYPE STRING,
CFDA TYPE STRING,
FUNDING_ORIGIN TYPE STRING,
SALESORG TYPE STRING,
DISTR_CHAN TYPE STRING,
DIVISION TYPE STRING,
BILLING_RULE TYPE STRING,
INSTALLMENT_AMT TYPE STRING,
MILESTONE_TOTAL TYPE STRING,
IDC_RULE TYPE STRING,
IDC_CAP TYPE STRING,
IDC_ACCUMULATED TYPE STRING,
CS_RULE TYPE STRING,
LIFECYCLE_STATUS TYPE STRING,
USER_STATUS TYPE STRING,
AUTHGR TYPE STRING,
XDELE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_GMGR_DI_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_GMGR_DI_STR-GRANT_DESC sy-vline 
WA_GMGR_DI_STR-GRANT_SHORT_DESC sy-vline 
WA_GMGR_DI_STR-AWARD_TYPE sy-vline 
WA_GMGR_DI_STR-AWARD_START sy-vline 
WA_GMGR_DI_STR-AWARD_END sy-vline 
WA_GMGR_DI_STR-FINAL_BILL_DATE sy-vline 
WA_GMGR_DI_STR-LETTER_OF_CREDIT sy-vline 
WA_GMGR_DI_STR-BLOCKING_IND sy-vline 
WA_GMGR_DI_STR-SPLIT_OF_YEARS sy-vline 
WA_GMGR_DI_STR-GRANT_FY_VARIANT sy-vline 
WA_GMGR_DI_STR-GRANT_CURRENCY sy-vline 
WA_GMGR_DI_STR-GRANT_TOTAL sy-vline 
WA_GMGR_DI_STR-EXCHANGE_RATE sy-vline 
WA_GMGR_DI_STR-EXCHANGE_DATE sy-vline 
WA_GMGR_DI_STR-FROM_FACTOR sy-vline 
WA_GMGR_DI_STR-TO_FACTOR sy-vline 
WA_GMGR_DI_STR-CFDA sy-vline 
WA_GMGR_DI_STR-FUNDING_ORIGIN sy-vline 
WA_GMGR_DI_STR-SALESORG sy-vline 
WA_GMGR_DI_STR-DISTR_CHAN sy-vline 
WA_GMGR_DI_STR-DIVISION sy-vline 
WA_GMGR_DI_STR-BILLING_RULE sy-vline 
WA_GMGR_DI_STR-INSTALLMENT_AMT sy-vline 
WA_GMGR_DI_STR-MILESTONE_TOTAL sy-vline 
WA_GMGR_DI_STR-IDC_RULE sy-vline 
WA_GMGR_DI_STR-IDC_CAP sy-vline 
WA_GMGR_DI_STR-IDC_ACCUMULATED sy-vline 
WA_GMGR_DI_STR-CS_RULE sy-vline 
WA_GMGR_DI_STR-LIFECYCLE_STATUS sy-vline 
WA_GMGR_DI_STR-USER_STATUS sy-vline 
WA_GMGR_DI_STR-AUTHGR sy-vline 
WA_GMGR_DI_STR-XDELE sy-vline      INTO ld_text SEPARATED BY SPACE.

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