ABAP Select data from SAP table GRMG_ABAP_APPLICATION_TEST into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM GRMG_ABAP_APPLICATION_TEST
*  INTO TABLE @DATA(IT_GRMG_ABAP_APPLICATION_TEST2).
*--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_GRMG_ABAP_APPLICATION_TEST INDEX 1 INTO DATA(WA_GRMG_ABAP_APPLICATION_TEST2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<GRMG_ABAP_APPLICATION_TEST>-SCEN_NAME = 1.
<GRMG_ABAP_APPLICATION_TEST>-SCEN_VERSION = 1.
<GRMG_ABAP_APPLICATION_TEST>-SCEN_INST = 1.
<GRMG_ABAP_APPLICATION_TEST>-COMP_NAME = 1.
<GRMG_ABAP_APPLICATION_TEST>-COMP_VERSION = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_GRMG_ABAP_APPLICATION_TEST-COMP_TYPE, sy-vline,
  WA_GRMG_ABAP_APPLICATION_TEST-FUNCMOD, sy-vline,
  WA_GRMG_ABAP_APPLICATION_TEST-GRMG_CONF, sy-vline,
  WA_GRMG_ABAP_APPLICATION_TEST-DEST, sy-vline,
  WA_GRMG_ABAP_APPLICATION_TEST-PARNAME1, sy-vline,
  WA_GRMG_ABAP_APPLICATION_TEST-PARVALUE1, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_GRMG_ABAP_APPLICATION_TEST 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_GRMG_ABAP_APPLICATION_TEST 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_GRMG_ABAP_APPLICATION_TEST INTO WA_GRMG_ABAP_APPLICATION_TEST.


*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_GRMG_ABAP_APPLICATION_TEST_STR, 
SCEN_NAME TYPE STRING,
SCEN_VERSION TYPE STRING,
SCEN_INST TYPE STRING,
COMP_NAME TYPE STRING,
COMP_VERSION TYPE STRING,
COMP_TYPE TYPE STRING,
FUNCMOD TYPE STRING,
GRMG_CONF TYPE STRING,
DEST TYPE STRING,
PARNAME1 TYPE STRING,
PARVALUE1 TYPE STRING,
PARNAME2 TYPE STRING,
PARVALUE2 TYPE STRING,
PARNAME3 TYPE STRING,
PARVALUE3 TYPE STRING,
PARNAME4 TYPE STRING,
PARVALUE4 TYPE STRING,
PARNAME5 TYPE STRING,
PARVALUE5 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_GRMG_ABAP_APPLICATION_TEST_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_GRMG_ABAP_APPLICATION_TEST_STR-SCEN_NAME sy-vline 
WA_GRMG_ABAP_APPLICATION_TEST_STR-SCEN_VERSION sy-vline 
WA_GRMG_ABAP_APPLICATION_TEST_STR-SCEN_INST sy-vline 
WA_GRMG_ABAP_APPLICATION_TEST_STR-COMP_NAME sy-vline 
WA_GRMG_ABAP_APPLICATION_TEST_STR-COMP_VERSION sy-vline 
WA_GRMG_ABAP_APPLICATION_TEST_STR-COMP_TYPE sy-vline 
WA_GRMG_ABAP_APPLICATION_TEST_STR-FUNCMOD sy-vline 
WA_GRMG_ABAP_APPLICATION_TEST_STR-GRMG_CONF sy-vline 
WA_GRMG_ABAP_APPLICATION_TEST_STR-DEST sy-vline 
WA_GRMG_ABAP_APPLICATION_TEST_STR-PARNAME1 sy-vline 
WA_GRMG_ABAP_APPLICATION_TEST_STR-PARVALUE1 sy-vline 
WA_GRMG_ABAP_APPLICATION_TEST_STR-PARNAME2 sy-vline 
WA_GRMG_ABAP_APPLICATION_TEST_STR-PARVALUE2 sy-vline 
WA_GRMG_ABAP_APPLICATION_TEST_STR-PARNAME3 sy-vline 
WA_GRMG_ABAP_APPLICATION_TEST_STR-PARVALUE3 sy-vline 
WA_GRMG_ABAP_APPLICATION_TEST_STR-PARNAME4 sy-vline 
WA_GRMG_ABAP_APPLICATION_TEST_STR-PARVALUE4 sy-vline 
WA_GRMG_ABAP_APPLICATION_TEST_STR-PARNAME5 sy-vline 
WA_GRMG_ABAP_APPLICATION_TEST_STR-PARVALUE5 sy-vline      INTO ld_text SEPARATED BY SPACE.

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