ABAP Select data from SAP table GRFN_S_CY_H4 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP GRFN_S_CY_H4 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 GRFN_S_CY_H4. 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 GRFN_S_CY_H4 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_GRFN_S_CY_H4 TYPE STANDARD TABLE OF GRFN_S_CY_H4,
      WA_GRFN_S_CY_H4 TYPE GRFN_S_CY_H4,
      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: <GRFN_S_CY_H4> TYPE GRFN_S_CY_H4.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_GRFN_S_CY_H4.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM GRFN_S_CY_H4
  INTO TABLE IT_GRFN_S_CY_H4.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM GRFN_S_CY_H4
*  INTO TABLE @DATA(IT_GRFN_S_CY_H42).
*--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_GRFN_S_CY_H4 INDEX 1 INTO DATA(WA_GRFN_S_CY_H42).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_GRFN_S_CY_H4 ASSIGNING <GRFN_S_CY_H4>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<GRFN_S_CY_H4>-OBJECT_KEY = 1.
<GRFN_S_CY_H4>-PARENT_KEY = 1.
<GRFN_S_CY_H4>-IS_EXPANDED = 1.
<GRFN_S_CY_H4>-IS_LEAF = 1.
<GRFN_S_CY_H4>-TREE_LEVEL = 1.

ENDLOOP.

LOOP AT IT_GRFN_S_CY_H4 INTO WA_GRFN_S_CY_H4.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_GRFN_S_CY_H4-NODE, sy-vline,
  WA_GRFN_S_CY_H4-NODE_T, sy-vline,
  WA_GRFN_S_CY_H4-NODETYPE, sy-vline,
  WA_GRFN_S_CY_H4-NODETYPE_T, sy-vline,
  WA_GRFN_S_CY_H4-NODETYPE_ICON, sy-vline,
  WA_GRFN_S_CY_H4-RE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_GRFN_S_CY_H4 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_GRFN_S_CY_H4 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_GRFN_S_CY_H4 INTO WA_GRFN_S_CY_H4.


*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_GRFN_S_CY_H4_STR, 
OBJECT_KEY TYPE STRING,
PARENT_KEY TYPE STRING,
IS_EXPANDED TYPE STRING,
IS_LEAF TYPE STRING,
TREE_LEVEL TYPE STRING,
NODE TYPE STRING,
NODE_T TYPE STRING,
NODETYPE TYPE STRING,
NODETYPE_T TYPE STRING,
NODETYPE_ICON TYPE STRING,
RE TYPE STRING,
RE_T TYPE STRING,
RE_D TYPE STRING,
OU TYPE STRING,
OU_T TYPE STRING,
OU_D TYPE STRING,
OU_IN_SCOPE TYPE STRING,
OU_IN_SCOPE_T TYPE STRING,
OU_COUNTRY TYPE STRING,
OU_COUNTRY_T TYPE STRING,
OU_REGION TYPE STRING,
OU_REGION_T TYPE STRING,
OU_RESP_USER TYPE STRING,
OU_RESP_USER_T TYPE STRING,
OU_VALID_FROM TYPE STRING,
OU_VALID_TO TYPE STRING,
OU_SIGNOFF TYPE STRING,
OU_SIGNOFF_ICON TYPE STRING,
OU_SIGNOFF_T TYPE STRING,
SO_COMMENT TYPE STRING,
SO_DATE TYPE STRING,
SO_ICON TYPE STRING,
SO_STATUS_T TYPE STRING,
SO_STATUS TYPE STRING,
SO_USER TYPE STRING,
SO_USER_T TYPE STRING,
RATING TYPE STRING,
RATING_ICON TYPE STRING,
RATING_T TYPE STRING,END OF T_EKKO_STR.
DATA: WA_GRFN_S_CY_H4_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_GRFN_S_CY_H4_STR-OBJECT_KEY sy-vline 
WA_GRFN_S_CY_H4_STR-PARENT_KEY sy-vline 
WA_GRFN_S_CY_H4_STR-IS_EXPANDED sy-vline 
WA_GRFN_S_CY_H4_STR-IS_LEAF sy-vline 
WA_GRFN_S_CY_H4_STR-TREE_LEVEL sy-vline 
WA_GRFN_S_CY_H4_STR-NODE sy-vline 
WA_GRFN_S_CY_H4_STR-NODE_T sy-vline 
WA_GRFN_S_CY_H4_STR-NODETYPE sy-vline 
WA_GRFN_S_CY_H4_STR-NODETYPE_T sy-vline 
WA_GRFN_S_CY_H4_STR-NODETYPE_ICON sy-vline 
WA_GRFN_S_CY_H4_STR-RE sy-vline 
WA_GRFN_S_CY_H4_STR-RE_T sy-vline 
WA_GRFN_S_CY_H4_STR-RE_D sy-vline 
WA_GRFN_S_CY_H4_STR-OU sy-vline 
WA_GRFN_S_CY_H4_STR-OU_T sy-vline 
WA_GRFN_S_CY_H4_STR-OU_D sy-vline 
WA_GRFN_S_CY_H4_STR-OU_IN_SCOPE sy-vline 
WA_GRFN_S_CY_H4_STR-OU_IN_SCOPE_T sy-vline 
WA_GRFN_S_CY_H4_STR-OU_COUNTRY sy-vline 
WA_GRFN_S_CY_H4_STR-OU_COUNTRY_T sy-vline 
WA_GRFN_S_CY_H4_STR-OU_REGION sy-vline 
WA_GRFN_S_CY_H4_STR-OU_REGION_T sy-vline 
WA_GRFN_S_CY_H4_STR-OU_RESP_USER sy-vline 
WA_GRFN_S_CY_H4_STR-OU_RESP_USER_T sy-vline 
WA_GRFN_S_CY_H4_STR-OU_VALID_FROM sy-vline 
WA_GRFN_S_CY_H4_STR-OU_VALID_TO sy-vline 
WA_GRFN_S_CY_H4_STR-OU_SIGNOFF sy-vline 
WA_GRFN_S_CY_H4_STR-OU_SIGNOFF_ICON sy-vline 
WA_GRFN_S_CY_H4_STR-OU_SIGNOFF_T sy-vline 
WA_GRFN_S_CY_H4_STR-SO_COMMENT sy-vline 
WA_GRFN_S_CY_H4_STR-SO_DATE sy-vline 
WA_GRFN_S_CY_H4_STR-SO_ICON sy-vline 
WA_GRFN_S_CY_H4_STR-SO_STATUS_T sy-vline 
WA_GRFN_S_CY_H4_STR-SO_STATUS sy-vline 
WA_GRFN_S_CY_H4_STR-SO_USER sy-vline 
WA_GRFN_S_CY_H4_STR-SO_USER_T sy-vline 
WA_GRFN_S_CY_H4_STR-RATING sy-vline 
WA_GRFN_S_CY_H4_STR-RATING_ICON sy-vline 
WA_GRFN_S_CY_H4_STR-RATING_T sy-vline      INTO ld_text SEPARATED BY SPACE.

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