ABAP Select data from SAP table GRPCTRANS into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM GRPCTRANS
*  INTO TABLE @DATA(IT_GRPCTRANS2).
*--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_GRPCTRANS INDEX 1 INTO DATA(WA_GRPCTRANS2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<GRPCTRANS>-MANDT = 1.
<GRPCTRANS>-RULEID = 1.
<GRPCTRANS>-VERSION = 1.
<GRPCTRANS>-RULESETID = 1.
<GRPCTRANS>-RULEVAR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_GRPCTRANS-SCHEMANO, sy-vline,
  WA_GRPCTRANS-SCOUNTER, sy-vline,
  WA_GRPCTRANS-ANALYSISTYPE, sy-vline,
  WA_GRPCTRANS-ANALYSISIND, sy-vline,
  WA_GRPCTRANS-RANGE, sy-vline,
  WA_GRPCTRANS-ABSVAL_MW, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_GRPCTRANS 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_GRPCTRANS 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_GRPCTRANS INTO WA_GRPCTRANS.


*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_GRPCTRANS_STR, 
MANDT TYPE STRING,
RULEID TYPE STRING,
VERSION TYPE STRING,
RULESETID TYPE STRING,
RULEVAR TYPE STRING,
SCHEMANO TYPE STRING,
SCOUNTER TYPE STRING,
ANALYSISTYPE TYPE STRING,
ANALYSISIND TYPE STRING,
RANGE TYPE STRING,
ABSVAL_MW TYPE STRING,
ABSVAL_SDEF TYPE STRING,
ABSVAL_DEF TYPE STRING,
PERCNT_MW TYPE STRING,
PERCNT_SDEF TYPE STRING,
PERCNT_DEF TYPE STRING,
WAERS TYPE STRING,
MW_IND TYPE STRING,
SD_IND TYPE STRING,
DEF_IND TYPE STRING,
ABSVAL_MW_CNTL TYPE STRING,
ABSVAL_SDEF_CNTL TYPE STRING,
ABSVAL_DEF_CNTL TYPE STRING,
PERCNT_MW_CNTL TYPE STRING,
PERCNT_SDEF_CNTL TYPE STRING,
PERCNT_DEF_CNTL TYPE STRING,
EXIST_CHK_IND TYPE STRING,
BLANK_CHK_IND TYPE STRING,
NUM_OF_CHNG_IND TYPE STRING,
VALUE_CHK_IND TYPE STRING,
CCI TYPE STRING,
INCL_EXCL_IND TYPE STRING,
CREATEDON TYPE STRING,
CREATETIME TYPE STRING,
CREATEDBY TYPE STRING,
CHANGEDON TYPE STRING,
CHANGETIME TYPE STRING,
CHANGEDBY TYPE STRING,END OF T_EKKO_STR.
DATA: WA_GRPCTRANS_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_GRPCTRANS_STR-MANDT sy-vline 
WA_GRPCTRANS_STR-RULEID sy-vline 
WA_GRPCTRANS_STR-VERSION sy-vline 
WA_GRPCTRANS_STR-RULESETID sy-vline 
WA_GRPCTRANS_STR-RULEVAR sy-vline 
WA_GRPCTRANS_STR-SCHEMANO sy-vline 
WA_GRPCTRANS_STR-SCOUNTER sy-vline 
WA_GRPCTRANS_STR-ANALYSISTYPE sy-vline 
WA_GRPCTRANS_STR-ANALYSISIND sy-vline 
WA_GRPCTRANS_STR-RANGE sy-vline 
WA_GRPCTRANS_STR-ABSVAL_MW sy-vline 
WA_GRPCTRANS_STR-ABSVAL_SDEF sy-vline 
WA_GRPCTRANS_STR-ABSVAL_DEF sy-vline 
WA_GRPCTRANS_STR-PERCNT_MW sy-vline 
WA_GRPCTRANS_STR-PERCNT_SDEF sy-vline 
WA_GRPCTRANS_STR-PERCNT_DEF sy-vline 
WA_GRPCTRANS_STR-WAERS sy-vline 
WA_GRPCTRANS_STR-MW_IND sy-vline 
WA_GRPCTRANS_STR-SD_IND sy-vline 
WA_GRPCTRANS_STR-DEF_IND sy-vline 
WA_GRPCTRANS_STR-ABSVAL_MW_CNTL sy-vline 
WA_GRPCTRANS_STR-ABSVAL_SDEF_CNTL sy-vline 
WA_GRPCTRANS_STR-ABSVAL_DEF_CNTL sy-vline 
WA_GRPCTRANS_STR-PERCNT_MW_CNTL sy-vline 
WA_GRPCTRANS_STR-PERCNT_SDEF_CNTL sy-vline 
WA_GRPCTRANS_STR-PERCNT_DEF_CNTL sy-vline 
WA_GRPCTRANS_STR-EXIST_CHK_IND sy-vline 
WA_GRPCTRANS_STR-BLANK_CHK_IND sy-vline 
WA_GRPCTRANS_STR-NUM_OF_CHNG_IND sy-vline 
WA_GRPCTRANS_STR-VALUE_CHK_IND sy-vline 
WA_GRPCTRANS_STR-CCI sy-vline 
WA_GRPCTRANS_STR-INCL_EXCL_IND sy-vline 
WA_GRPCTRANS_STR-CREATEDON sy-vline 
WA_GRPCTRANS_STR-CREATETIME sy-vline 
WA_GRPCTRANS_STR-CREATEDBY sy-vline 
WA_GRPCTRANS_STR-CHANGEDON sy-vline 
WA_GRPCTRANS_STR-CHANGETIME sy-vline 
WA_GRPCTRANS_STR-CHANGEDBY sy-vline      INTO ld_text SEPARATED BY SPACE.

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