ABAP Select data from SAP table GRFN_S_CY_H1A 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_H1A 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_H1A. 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_H1A 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_H1A TYPE STANDARD TABLE OF GRFN_S_CY_H1A,
      WA_GRFN_S_CY_H1A TYPE GRFN_S_CY_H1A,
      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_H1A> TYPE GRFN_S_CY_H1A.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_GRFN_S_CY_H1A.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM GRFN_S_CY_H1A
  INTO TABLE IT_GRFN_S_CY_H1A.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM GRFN_S_CY_H1A
*  INTO TABLE @DATA(IT_GRFN_S_CY_H1A2).
*--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_H1A INDEX 1 INTO DATA(WA_GRFN_S_CY_H1A2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_GRFN_S_CY_H1A ASSIGNING <GRFN_S_CY_H1A>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<GRFN_S_CY_H1A>-OBJECT_KEY = 1.
<GRFN_S_CY_H1A>-PARENT_KEY = 1.
<GRFN_S_CY_H1A>-IS_EXPANDED = 1.
<GRFN_S_CY_H1A>-IS_LEAF = 1.
<GRFN_S_CY_H1A>-TREE_LEVEL = 1.

ENDLOOP.

LOOP AT IT_GRFN_S_CY_H1A INTO WA_GRFN_S_CY_H1A.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_GRFN_S_CY_H1A-NODE, sy-vline,
  WA_GRFN_S_CY_H1A-NODE_T, sy-vline,
  WA_GRFN_S_CY_H1A-NODETYPE, sy-vline,
  WA_GRFN_S_CY_H1A-NODETYPE_T, sy-vline,
  WA_GRFN_S_CY_H1A-NODETYPE_ICON, sy-vline,
  WA_GRFN_S_CY_H1A-RESP_USER, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_GRFN_S_CY_H1A 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_H1A 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_H1A INTO WA_GRFN_S_CY_H1A.


*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_H1A_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,
RESP_USER TYPE STRING,
RESP_USER_T 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,
PR TYPE STRING,
PR_T TYPE STRING,
PR_D TYPE STRING,
SP TYPE STRING,
SP_T TYPE STRING,
SP_D TYPE STRING,
SP_IN_SCOPE TYPE STRING,
SP_IN_SCOPE_T TYPE STRING,
SP_TRTYPE_O TYPE STRING,
SP_TRTYPE_O_T TYPE STRING,
CN_RS TYPE STRING,
CN_RS_T TYPE STRING,
CN TYPE STRING,
CN_T TYPE STRING,
CN_D TYPE STRING,
CN_CATEGORY TYPE STRING,
CN_CATEGORY_T TYPE STRING,
CN_SIG TYPE STRING,
CN_SIG_T TYPE STRING,
CN_EVIDENCE TYPE STRING,
CN_EVIDENCE_T TYPE STRING,
CN_CNTR_RISK TYPE STRING,
CN_CNTR_RISK_T TYPE STRING,
CN_CNGROUP TYPE STRING,
CN_CNGROUP_T TYPE STRING,
CN_SUBGROUP TYPE STRING,
CN_SUBGROUP_T TYPE STRING,
CN_PURP TYPE STRING,
CN_PURP_T TYPE STRING,
CN_AUTOM TYPE STRING,
CN_AUTOM_T TYPE STRING,
CN_NATURE TYPE STRING,
CN_NATURE_T TYPE STRING,
CN_FREQ TYPE STRING,
CN_FREQ_T TYPE STRING,END OF T_EKKO_STR.
DATA: WA_GRFN_S_CY_H1A_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_H1A_STR-OBJECT_KEY sy-vline 
WA_GRFN_S_CY_H1A_STR-PARENT_KEY sy-vline 
WA_GRFN_S_CY_H1A_STR-IS_EXPANDED sy-vline 
WA_GRFN_S_CY_H1A_STR-IS_LEAF sy-vline 
WA_GRFN_S_CY_H1A_STR-TREE_LEVEL sy-vline 
WA_GRFN_S_CY_H1A_STR-NODE sy-vline 
WA_GRFN_S_CY_H1A_STR-NODE_T sy-vline 
WA_GRFN_S_CY_H1A_STR-NODETYPE sy-vline 
WA_GRFN_S_CY_H1A_STR-NODETYPE_T sy-vline 
WA_GRFN_S_CY_H1A_STR-NODETYPE_ICON sy-vline 
WA_GRFN_S_CY_H1A_STR-RESP_USER sy-vline 
WA_GRFN_S_CY_H1A_STR-RESP_USER_T sy-vline 
WA_GRFN_S_CY_H1A_STR-RE sy-vline 
WA_GRFN_S_CY_H1A_STR-RE_T sy-vline 
WA_GRFN_S_CY_H1A_STR-RE_D sy-vline 
WA_GRFN_S_CY_H1A_STR-OU sy-vline 
WA_GRFN_S_CY_H1A_STR-OU_T sy-vline 
WA_GRFN_S_CY_H1A_STR-OU_D sy-vline 
WA_GRFN_S_CY_H1A_STR-OU_IN_SCOPE sy-vline 
WA_GRFN_S_CY_H1A_STR-OU_IN_SCOPE_T sy-vline 
WA_GRFN_S_CY_H1A_STR-OU_COUNTRY sy-vline 
WA_GRFN_S_CY_H1A_STR-OU_COUNTRY_T sy-vline 
WA_GRFN_S_CY_H1A_STR-OU_REGION sy-vline 
WA_GRFN_S_CY_H1A_STR-OU_REGION_T sy-vline 
WA_GRFN_S_CY_H1A_STR-PR sy-vline 
WA_GRFN_S_CY_H1A_STR-PR_T sy-vline 
WA_GRFN_S_CY_H1A_STR-PR_D sy-vline 
WA_GRFN_S_CY_H1A_STR-SP sy-vline 
WA_GRFN_S_CY_H1A_STR-SP_T sy-vline 
WA_GRFN_S_CY_H1A_STR-SP_D sy-vline 
WA_GRFN_S_CY_H1A_STR-SP_IN_SCOPE sy-vline 
WA_GRFN_S_CY_H1A_STR-SP_IN_SCOPE_T sy-vline 
WA_GRFN_S_CY_H1A_STR-SP_TRTYPE_O sy-vline 
WA_GRFN_S_CY_H1A_STR-SP_TRTYPE_O_T sy-vline 
WA_GRFN_S_CY_H1A_STR-CN_RS sy-vline 
WA_GRFN_S_CY_H1A_STR-CN_RS_T sy-vline 
WA_GRFN_S_CY_H1A_STR-CN sy-vline 
WA_GRFN_S_CY_H1A_STR-CN_T sy-vline 
WA_GRFN_S_CY_H1A_STR-CN_D sy-vline 
WA_GRFN_S_CY_H1A_STR-CN_CATEGORY sy-vline 
WA_GRFN_S_CY_H1A_STR-CN_CATEGORY_T sy-vline 
WA_GRFN_S_CY_H1A_STR-CN_SIG sy-vline 
WA_GRFN_S_CY_H1A_STR-CN_SIG_T sy-vline 
WA_GRFN_S_CY_H1A_STR-CN_EVIDENCE sy-vline 
WA_GRFN_S_CY_H1A_STR-CN_EVIDENCE_T sy-vline 
WA_GRFN_S_CY_H1A_STR-CN_CNTR_RISK sy-vline 
WA_GRFN_S_CY_H1A_STR-CN_CNTR_RISK_T sy-vline 
WA_GRFN_S_CY_H1A_STR-CN_CNGROUP sy-vline 
WA_GRFN_S_CY_H1A_STR-CN_CNGROUP_T sy-vline 
WA_GRFN_S_CY_H1A_STR-CN_SUBGROUP sy-vline 
WA_GRFN_S_CY_H1A_STR-CN_SUBGROUP_T sy-vline 
WA_GRFN_S_CY_H1A_STR-CN_PURP sy-vline 
WA_GRFN_S_CY_H1A_STR-CN_PURP_T sy-vline 
WA_GRFN_S_CY_H1A_STR-CN_AUTOM sy-vline 
WA_GRFN_S_CY_H1A_STR-CN_AUTOM_T sy-vline 
WA_GRFN_S_CY_H1A_STR-CN_NATURE sy-vline 
WA_GRFN_S_CY_H1A_STR-CN_NATURE_T sy-vline 
WA_GRFN_S_CY_H1A_STR-CN_FREQ sy-vline 
WA_GRFN_S_CY_H1A_STR-CN_FREQ_T sy-vline      INTO ld_text SEPARATED BY SPACE.

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