ABAP Select data from SAP table GRPCRTA_S_HEADER_DISPLAY into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM GRPCRTA_S_HEADER_DISPLAY
*  INTO TABLE @DATA(IT_GRPCRTA_S_HEADER_DISPLAY2).
*--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_GRPCRTA_S_HEADER_DISPLAY INDEX 1 INTO DATA(WA_GRPCRTA_S_HEADER_DISPLAY2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<GRPCRTA_S_HEADER_DISPLAY>-PROCESSID = 1.
<GRPCRTA_S_HEADER_DISPLAY>-SUBPROCESSID = 1.
<GRPCRTA_S_HEADER_DISPLAY>-SCRIPTCATG = 1.
<GRPCRTA_S_HEADER_DISPLAY>-CTL_TYPE_ID = 1.
<GRPCRTA_S_HEADER_DISPLAY>-ASSERTION_ID = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_GRPCRTA_S_HEADER_DISPLAY-RULEID, sy-vline,
  WA_GRPCRTA_S_HEADER_DISPLAY-RULE_STEP, sy-vline,
  WA_GRPCRTA_S_HEADER_DISPLAY-SCHEMANO, sy-vline,
  WA_GRPCRTA_S_HEADER_DISPLAY-WAERS, sy-vline,
  WA_GRPCRTA_S_HEADER_DISPLAY-RANGE, sy-vline,
  WA_GRPCRTA_S_HEADER_DISPLAY-VERSION, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_GRPCRTA_S_HEADER_DISPLAY 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_GRPCRTA_S_HEADER_DISPLAY 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_GRPCRTA_S_HEADER_DISPLAY INTO WA_GRPCRTA_S_HEADER_DISPLAY.


*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_GRPCRTA_S_HEADER_DISPLAY_STR, 
PROCESSID TYPE STRING,
SUBPROCESSID TYPE STRING,
SCRIPTCATG TYPE STRING,
CTL_TYPE_ID TYPE STRING,
ASSERTION_ID TYPE STRING,
RULEID TYPE STRING,
RULE_STEP TYPE STRING,
SCHEMANO TYPE STRING,
WAERS TYPE STRING,
RANGE TYPE STRING,
VERSION TYPE STRING,
RULEVAR TYPE STRING,
CHECK_FLD TYPE STRING,
CHECK_VAL TYPE STRING,
GROUPING_NO TYPE STRING,
DEPENDENCY_NO TYPE STRING,
CCI TYPE STRING,
INEX TYPE STRING,
TOTAL_DEF TYPE STRING,
STATUS TYPE STRING,
PERIOD TYPE STRING,
RUNBY TYPE STRING,
TIME TYPE STRING,
GV_GRP TYPE STRING,
LOCATION TYPE STRING,
TOTAL_RECORD TYPE STRING,
COUNTER TYPE STRING,
OPTION TYPE STRING,
LOW TYPE STRING,
HIGH TYPE STRING,
RULE_VALUES TYPE STRING,
RISK TYPE STRING,
REPORTID TYPE STRING,
CONTROL_NAME TYPE STRING,
CONTROL_ID TYPE STRING,END OF T_EKKO_STR.
DATA: WA_GRPCRTA_S_HEADER_DISPLAY_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_GRPCRTA_S_HEADER_DISPLAY_STR-PROCESSID sy-vline 
WA_GRPCRTA_S_HEADER_DISPLAY_STR-SUBPROCESSID sy-vline 
WA_GRPCRTA_S_HEADER_DISPLAY_STR-SCRIPTCATG sy-vline 
WA_GRPCRTA_S_HEADER_DISPLAY_STR-CTL_TYPE_ID sy-vline 
WA_GRPCRTA_S_HEADER_DISPLAY_STR-ASSERTION_ID sy-vline 
WA_GRPCRTA_S_HEADER_DISPLAY_STR-RULEID sy-vline 
WA_GRPCRTA_S_HEADER_DISPLAY_STR-RULE_STEP sy-vline 
WA_GRPCRTA_S_HEADER_DISPLAY_STR-SCHEMANO sy-vline 
WA_GRPCRTA_S_HEADER_DISPLAY_STR-WAERS sy-vline 
WA_GRPCRTA_S_HEADER_DISPLAY_STR-RANGE sy-vline 
WA_GRPCRTA_S_HEADER_DISPLAY_STR-VERSION sy-vline 
WA_GRPCRTA_S_HEADER_DISPLAY_STR-RULEVAR sy-vline 
WA_GRPCRTA_S_HEADER_DISPLAY_STR-CHECK_FLD sy-vline 
WA_GRPCRTA_S_HEADER_DISPLAY_STR-CHECK_VAL sy-vline 
WA_GRPCRTA_S_HEADER_DISPLAY_STR-GROUPING_NO sy-vline 
WA_GRPCRTA_S_HEADER_DISPLAY_STR-DEPENDENCY_NO sy-vline 
WA_GRPCRTA_S_HEADER_DISPLAY_STR-CCI sy-vline 
WA_GRPCRTA_S_HEADER_DISPLAY_STR-INEX sy-vline 
WA_GRPCRTA_S_HEADER_DISPLAY_STR-TOTAL_DEF sy-vline 
WA_GRPCRTA_S_HEADER_DISPLAY_STR-STATUS sy-vline 
WA_GRPCRTA_S_HEADER_DISPLAY_STR-PERIOD sy-vline 
WA_GRPCRTA_S_HEADER_DISPLAY_STR-RUNBY sy-vline 
WA_GRPCRTA_S_HEADER_DISPLAY_STR-TIME sy-vline 
WA_GRPCRTA_S_HEADER_DISPLAY_STR-GV_GRP sy-vline 
WA_GRPCRTA_S_HEADER_DISPLAY_STR-LOCATION sy-vline 
WA_GRPCRTA_S_HEADER_DISPLAY_STR-TOTAL_RECORD sy-vline 
WA_GRPCRTA_S_HEADER_DISPLAY_STR-COUNTER sy-vline 
WA_GRPCRTA_S_HEADER_DISPLAY_STR-OPTION sy-vline 
WA_GRPCRTA_S_HEADER_DISPLAY_STR-LOW sy-vline 
WA_GRPCRTA_S_HEADER_DISPLAY_STR-HIGH sy-vline 
WA_GRPCRTA_S_HEADER_DISPLAY_STR-RULE_VALUES sy-vline 
WA_GRPCRTA_S_HEADER_DISPLAY_STR-RISK sy-vline 
WA_GRPCRTA_S_HEADER_DISPLAY_STR-REPORTID sy-vline 
WA_GRPCRTA_S_HEADER_DISPLAY_STR-CONTROL_NAME sy-vline 
WA_GRPCRTA_S_HEADER_DISPLAY_STR-CONTROL_ID sy-vline      INTO ld_text SEPARATED BY SPACE.

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