ABAP Select data from SAP table GRPC_S_RLSET_HIER into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM GRPC_S_RLSET_HIER
*  INTO TABLE @DATA(IT_GRPC_S_RLSET_HIER2).
*--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_GRPC_S_RLSET_HIER INDEX 1 INTO DATA(WA_GRPC_S_RLSET_HIER2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<GRPC_S_RLSET_HIER>-RULESTEP = 1.
<GRPC_S_RLSET_HIER>-RULEID = 1.
<GRPC_S_RLSET_HIER>-SCHEMANO = 1.
<GRPC_S_RLSET_HIER>-RULESETID = 1.
<GRPC_S_RLSET_HIER>-RULEVAR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_GRPC_S_RLSET_HIER-SCRIPT, sy-vline,
  WA_GRPC_S_RLSET_HIER-CONNECTOR, sy-vline,
  WA_GRPC_S_RLSET_HIER-SCRIPTCATEGORY, sy-vline,
  WA_GRPC_S_RLSET_HIER-SYSTEMTYPE, sy-vline,
  WA_GRPC_S_RLSET_HIER-VERSION, sy-vline,
  WA_GRPC_S_RLSET_HIER-SCOUNTER, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_GRPC_S_RLSET_HIER 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_GRPC_S_RLSET_HIER 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_GRPC_S_RLSET_HIER INTO WA_GRPC_S_RLSET_HIER.


*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.

*Conversion exit DTYPE, internal->external for field DATATYPE
CALL FUNCTION 'CONVERSION_EXIT_DTYPE_OUTPUT'
  EXPORTING
    input =                      WA_GRPC_S_RLSET_HIER-DATATYPE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_GRPC_S_RLSET_HIER-DATATYPE.
WRITE:/ 'New Value:', ld_input.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_GRPC_S_RLSET_HIER_STR, 
RULESTEP TYPE STRING,
RULEID TYPE STRING,
SCHEMANO TYPE STRING,
RULESETID TYPE STRING,
RULEVAR TYPE STRING,
SCRIPT TYPE STRING,
CONNECTOR TYPE STRING,
SCRIPTCATEGORY TYPE STRING,
SYSTEMTYPE TYPE STRING,
VERSION 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,
CHG_CNTL_IND 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,
GROUPING_NO TYPE STRING,
DEPENDENCY_NO TYPE STRING,
SCHEMA_DESC TYPE STRING,
RULEID_DESC TYPE STRING,
ANALYSIS TYPE STRING,
ABSLOW TYPE STRING,
ABSMEDIUM TYPE STRING,
ABSHIGH TYPE STRING,
AI_TRANS TYPE STRING,
AI_CONFIG TYPE STRING,
ANALYSIS_CONFIG TYPE STRING,
INCLEXCLTEXT TYPE STRING,
ACTION TYPE STRING,
CHECKTYPE TYPE STRING,
DEFIND TYPE STRING,
DEFINDWOCCI TYPE STRING,
RLSETDESC TYPE STRING,
RLCRTYPE TYPE STRING,
RULEVAR_DESC TYPE STRING,
DATATYPE TYPE STRING,
INTTYPE TYPE STRING,
DATELOW TYPE STRING,
DATEMED TYPE STRING,
DATEHIGH TYPE STRING,
ABSVAL_MW_CN TYPE STRING,
ABSVAL_SDEF_CN TYPE STRING,
ABSVAL_DEF_CN TYPE STRING,
RULEVARTECH TYPE STRING,END OF T_EKKO_STR.
DATA: WA_GRPC_S_RLSET_HIER_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_GRPC_S_RLSET_HIER_STR-RULESTEP sy-vline 
WA_GRPC_S_RLSET_HIER_STR-RULEID sy-vline 
WA_GRPC_S_RLSET_HIER_STR-SCHEMANO sy-vline 
WA_GRPC_S_RLSET_HIER_STR-RULESETID sy-vline 
WA_GRPC_S_RLSET_HIER_STR-RULEVAR sy-vline 
WA_GRPC_S_RLSET_HIER_STR-SCRIPT sy-vline 
WA_GRPC_S_RLSET_HIER_STR-CONNECTOR sy-vline 
WA_GRPC_S_RLSET_HIER_STR-SCRIPTCATEGORY sy-vline 
WA_GRPC_S_RLSET_HIER_STR-SYSTEMTYPE sy-vline 
WA_GRPC_S_RLSET_HIER_STR-VERSION sy-vline 
WA_GRPC_S_RLSET_HIER_STR-SCOUNTER sy-vline 
WA_GRPC_S_RLSET_HIER_STR-ANALYSISTYPE sy-vline 
WA_GRPC_S_RLSET_HIER_STR-ANALYSISIND sy-vline 
WA_GRPC_S_RLSET_HIER_STR-RANGE sy-vline 
WA_GRPC_S_RLSET_HIER_STR-ABSVAL_MW sy-vline 
WA_GRPC_S_RLSET_HIER_STR-ABSVAL_SDEF sy-vline 
WA_GRPC_S_RLSET_HIER_STR-ABSVAL_DEF sy-vline 
WA_GRPC_S_RLSET_HIER_STR-PERCNT_MW sy-vline 
WA_GRPC_S_RLSET_HIER_STR-PERCNT_SDEF sy-vline 
WA_GRPC_S_RLSET_HIER_STR-PERCNT_DEF sy-vline 
WA_GRPC_S_RLSET_HIER_STR-CHG_CNTL_IND sy-vline 
WA_GRPC_S_RLSET_HIER_STR-WAERS sy-vline 
WA_GRPC_S_RLSET_HIER_STR-MW_IND sy-vline 
WA_GRPC_S_RLSET_HIER_STR-SD_IND sy-vline 
WA_GRPC_S_RLSET_HIER_STR-DEF_IND sy-vline 
WA_GRPC_S_RLSET_HIER_STR-ABSVAL_MW_CNTL sy-vline 
WA_GRPC_S_RLSET_HIER_STR-ABSVAL_SDEF_CNTL sy-vline 
WA_GRPC_S_RLSET_HIER_STR-ABSVAL_DEF_CNTL sy-vline 
WA_GRPC_S_RLSET_HIER_STR-PERCNT_MW_CNTL sy-vline 
WA_GRPC_S_RLSET_HIER_STR-PERCNT_SDEF_CNTL sy-vline 
WA_GRPC_S_RLSET_HIER_STR-PERCNT_DEF_CNTL sy-vline 
WA_GRPC_S_RLSET_HIER_STR-EXIST_CHK_IND sy-vline 
WA_GRPC_S_RLSET_HIER_STR-BLANK_CHK_IND sy-vline 
WA_GRPC_S_RLSET_HIER_STR-NUM_OF_CHNG_IND sy-vline 
WA_GRPC_S_RLSET_HIER_STR-VALUE_CHK_IND sy-vline 
WA_GRPC_S_RLSET_HIER_STR-CCI sy-vline 
WA_GRPC_S_RLSET_HIER_STR-INCL_EXCL_IND sy-vline 
WA_GRPC_S_RLSET_HIER_STR-GROUPING_NO sy-vline 
WA_GRPC_S_RLSET_HIER_STR-DEPENDENCY_NO sy-vline 
WA_GRPC_S_RLSET_HIER_STR-SCHEMA_DESC sy-vline 
WA_GRPC_S_RLSET_HIER_STR-RULEID_DESC sy-vline 
WA_GRPC_S_RLSET_HIER_STR-ANALYSIS sy-vline 
WA_GRPC_S_RLSET_HIER_STR-ABSLOW sy-vline 
WA_GRPC_S_RLSET_HIER_STR-ABSMEDIUM sy-vline 
WA_GRPC_S_RLSET_HIER_STR-ABSHIGH sy-vline 
WA_GRPC_S_RLSET_HIER_STR-AI_TRANS sy-vline 
WA_GRPC_S_RLSET_HIER_STR-AI_CONFIG sy-vline 
WA_GRPC_S_RLSET_HIER_STR-ANALYSIS_CONFIG sy-vline 
WA_GRPC_S_RLSET_HIER_STR-INCLEXCLTEXT sy-vline 
WA_GRPC_S_RLSET_HIER_STR-ACTION sy-vline 
WA_GRPC_S_RLSET_HIER_STR-CHECKTYPE sy-vline 
WA_GRPC_S_RLSET_HIER_STR-DEFIND sy-vline 
WA_GRPC_S_RLSET_HIER_STR-DEFINDWOCCI sy-vline 
WA_GRPC_S_RLSET_HIER_STR-RLSETDESC sy-vline 
WA_GRPC_S_RLSET_HIER_STR-RLCRTYPE sy-vline 
WA_GRPC_S_RLSET_HIER_STR-RULEVAR_DESC sy-vline 
WA_GRPC_S_RLSET_HIER_STR-DATATYPE sy-vline 
WA_GRPC_S_RLSET_HIER_STR-INTTYPE sy-vline 
WA_GRPC_S_RLSET_HIER_STR-DATELOW sy-vline 
WA_GRPC_S_RLSET_HIER_STR-DATEMED sy-vline 
WA_GRPC_S_RLSET_HIER_STR-DATEHIGH sy-vline 
WA_GRPC_S_RLSET_HIER_STR-ABSVAL_MW_CN sy-vline 
WA_GRPC_S_RLSET_HIER_STR-ABSVAL_SDEF_CN sy-vline 
WA_GRPC_S_RLSET_HIER_STR-ABSVAL_DEF_CN sy-vline 
WA_GRPC_S_RLSET_HIER_STR-RULEVARTECH sy-vline      INTO ld_text SEPARATED BY SPACE.

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