ABAP Select data from SAP table TCGRULPOSMREST into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM TCGRULPOSMREST
*  INTO TABLE @DATA(IT_TCGRULPOSMREST2).
*--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_TCGRULPOSMREST INDEX 1 INTO DATA(WA_TCGRULPOSMREST2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<TCGRULPOSMREST>-MANDT = 1.
<TCGRULPOSMREST>-RECN_GRP = 1.
<TCGRULPOSMREST>-POSNR = 1.
<TCGRULPOSMREST>-COMWPOS = 1.
<TCGRULPOSMREST>-ESTCAT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_TCGRULPOSMREST-ESTNAM, sy-vline,
  WA_TCGRULPOSMREST-CLINT, sy-vline,
  WA_TCGRULPOSMREST-KLART, sy-vline,
  WA_TCGRULPOSMREST-CLASS, sy-vline,
  WA_TCGRULPOSMREST-KLAGR, sy-vline,
  WA_TCGRULPOSMREST-BGRSE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_TCGRULPOSMREST 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_TCGRULPOSMREST 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_TCGRULPOSMREST INTO WA_TCGRULPOSMREST.


*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 ALPHA, internal->external for field RECN_GRP
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_TCGRULPOSMREST-RECN_GRP
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_TCGRULPOSMREST-RECN_GRP.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field DOKNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_TCGRULPOSMREST-DOKNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_TCGRULPOSMREST-DOKNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field MEINS
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_TCGRULPOSMREST-MEINS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_TCGRULPOSMREST-MEINS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ATINN, internal->external for field ATINN
CALL FUNCTION 'CONVERSION_EXIT_ATINN_OUTPUT'
  EXPORTING
    input =                      WA_TCGRULPOSMREST-ATINN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_TCGRULPOSMREST-ATINN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field ATAWE
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_TCGRULPOSMREST-ATAWE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_TCGRULPOSMREST-ATAWE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field ATAW1
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_TCGRULPOSMREST-ATAW1
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_TCGRULPOSMREST-ATAW1.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field AENNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_TCGRULPOSMREST-AENNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_TCGRULPOSMREST-AENNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ATINN, internal->external for field ATIMB
CALL FUNCTION 'CONVERSION_EXIT_ATINN_OUTPUT'
  EXPORTING
    input =                      WA_TCGRULPOSMREST-ATIMB
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_TCGRULPOSMREST-ATIMB.
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_TCGRULPOSMREST_STR, 
MANDT TYPE STRING,
RECN_GRP TYPE STRING,
POSNR TYPE STRING,
COMWPOS TYPE STRING,
ESTCAT TYPE STRING,
ESTNAM TYPE STRING,
CLINT TYPE STRING,
KLART TYPE STRING,
CLASS TYPE STRING,
KLAGR TYPE STRING,
BGRSE TYPE STRING,
BGRKL TYPE STRING,
BGRKP TYPE STRING,
ANAME TYPE STRING,
ADATU TYPE STRING,
VNAME TYPE STRING,
VDATU TYPE STRING,
VONDT TYPE STRING,
BISDT TYPE STRING,
ANZUO TYPE STRING,
PRAUS TYPE STRING,
SICHT TYPE STRING,
DOKNR TYPE STRING,
DOKAR TYPE STRING,
DOKTL TYPE STRING,
DOKVR TYPE STRING,
DINKZ TYPE STRING,
NNORM TYPE STRING,
NORMN TYPE STRING,
NORMB TYPE STRING,
NRMT1 TYPE STRING,
NRMT2 TYPE STRING,
AUSGD TYPE STRING,
VERSD TYPE STRING,
VERSI TYPE STRING,
LEIST TYPE STRING,
VERWE TYPE STRING,
SPART TYPE STRING,
LREF3 TYPE STRING,
WWSKZ TYPE STRING,
WWSSI TYPE STRING,
POTPR TYPE STRING,
CLOBK TYPE STRING,
CLMUL TYPE STRING,
CVIEW TYPE STRING,
DISST TYPE STRING,
MEINS TYPE STRING,
CLMOD TYPE STRING,
VWSTL TYPE STRING,
VWPLA TYPE STRING,
CLALT TYPE STRING,
LBREI TYPE STRING,
BNAME TYPE STRING,
MAXBL TYPE STRING,
KNOBJ TYPE STRING,
LOCLA TYPE STRING,
ATNAM TYPE STRING,
FLG_IS_PHR TYPE STRING,
ATINN TYPE STRING,
ATZHL TYPE STRING,
ATWRT TYPE STRING,
ATFLV TYPE STRING,
ATAWE TYPE STRING,
ATFLB TYPE STRING,
ATAW1 TYPE STRING,
ATCOD TYPE STRING,
ATTLV TYPE STRING,
ATTLB TYPE STRING,
ATPRZ TYPE STRING,
ATINC TYPE STRING,
ATAUT TYPE STRING,
STATU TYPE STRING,
ATFOR TYPE STRING,
SLWRT TYPE STRING,
SLFLV TYPE STRING,
SLFLB TYPE STRING,
SLCOD TYPE STRING,
ATTAB TYPE STRING,
ATFEL TYPE STRING,
KZRED TYPE STRING,
OMADD TYPE STRING,
MMERB TYPE STRING,
ATEIN TYPE STRING,
AENNR TYPE STRING,
DATUV TYPE STRING,
CATWRT TYPE STRING,
CATFLV TYPE STRING,
ATIMB TYPE STRING,
ATZIS TYPE STRING,
ATSRT TYPE STRING,
ATVGLART TYPE STRING,
ADZHL TYPE STRING,
EST_ATWRT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_TCGRULPOSMREST_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_TCGRULPOSMREST_STR-MANDT sy-vline 
WA_TCGRULPOSMREST_STR-RECN_GRP sy-vline 
WA_TCGRULPOSMREST_STR-POSNR sy-vline 
WA_TCGRULPOSMREST_STR-COMWPOS sy-vline 
WA_TCGRULPOSMREST_STR-ESTCAT sy-vline 
WA_TCGRULPOSMREST_STR-ESTNAM sy-vline 
WA_TCGRULPOSMREST_STR-CLINT sy-vline 
WA_TCGRULPOSMREST_STR-KLART sy-vline 
WA_TCGRULPOSMREST_STR-CLASS sy-vline 
WA_TCGRULPOSMREST_STR-KLAGR sy-vline 
WA_TCGRULPOSMREST_STR-BGRSE sy-vline 
WA_TCGRULPOSMREST_STR-BGRKL sy-vline 
WA_TCGRULPOSMREST_STR-BGRKP sy-vline 
WA_TCGRULPOSMREST_STR-ANAME sy-vline 
WA_TCGRULPOSMREST_STR-ADATU sy-vline 
WA_TCGRULPOSMREST_STR-VNAME sy-vline 
WA_TCGRULPOSMREST_STR-VDATU sy-vline 
WA_TCGRULPOSMREST_STR-VONDT sy-vline 
WA_TCGRULPOSMREST_STR-BISDT sy-vline 
WA_TCGRULPOSMREST_STR-ANZUO sy-vline 
WA_TCGRULPOSMREST_STR-PRAUS sy-vline 
WA_TCGRULPOSMREST_STR-SICHT sy-vline 
WA_TCGRULPOSMREST_STR-DOKNR sy-vline 
WA_TCGRULPOSMREST_STR-DOKAR sy-vline 
WA_TCGRULPOSMREST_STR-DOKTL sy-vline 
WA_TCGRULPOSMREST_STR-DOKVR sy-vline 
WA_TCGRULPOSMREST_STR-DINKZ sy-vline 
WA_TCGRULPOSMREST_STR-NNORM sy-vline 
WA_TCGRULPOSMREST_STR-NORMN sy-vline 
WA_TCGRULPOSMREST_STR-NORMB sy-vline 
WA_TCGRULPOSMREST_STR-NRMT1 sy-vline 
WA_TCGRULPOSMREST_STR-NRMT2 sy-vline 
WA_TCGRULPOSMREST_STR-AUSGD sy-vline 
WA_TCGRULPOSMREST_STR-VERSD sy-vline 
WA_TCGRULPOSMREST_STR-VERSI sy-vline 
WA_TCGRULPOSMREST_STR-LEIST sy-vline 
WA_TCGRULPOSMREST_STR-VERWE sy-vline 
WA_TCGRULPOSMREST_STR-SPART sy-vline 
WA_TCGRULPOSMREST_STR-LREF3 sy-vline 
WA_TCGRULPOSMREST_STR-WWSKZ sy-vline 
WA_TCGRULPOSMREST_STR-WWSSI sy-vline 
WA_TCGRULPOSMREST_STR-POTPR sy-vline 
WA_TCGRULPOSMREST_STR-CLOBK sy-vline 
WA_TCGRULPOSMREST_STR-CLMUL sy-vline 
WA_TCGRULPOSMREST_STR-CVIEW sy-vline 
WA_TCGRULPOSMREST_STR-DISST sy-vline 
WA_TCGRULPOSMREST_STR-MEINS sy-vline 
WA_TCGRULPOSMREST_STR-CLMOD sy-vline 
WA_TCGRULPOSMREST_STR-VWSTL sy-vline 
WA_TCGRULPOSMREST_STR-VWPLA sy-vline 
WA_TCGRULPOSMREST_STR-CLALT sy-vline 
WA_TCGRULPOSMREST_STR-LBREI sy-vline 
WA_TCGRULPOSMREST_STR-BNAME sy-vline 
WA_TCGRULPOSMREST_STR-MAXBL sy-vline 
WA_TCGRULPOSMREST_STR-KNOBJ sy-vline 
WA_TCGRULPOSMREST_STR-LOCLA sy-vline 
WA_TCGRULPOSMREST_STR-ATNAM sy-vline 
WA_TCGRULPOSMREST_STR-FLG_IS_PHR sy-vline 
WA_TCGRULPOSMREST_STR-ATINN sy-vline 
WA_TCGRULPOSMREST_STR-ATZHL sy-vline 
WA_TCGRULPOSMREST_STR-ATWRT sy-vline 
WA_TCGRULPOSMREST_STR-ATFLV sy-vline 
WA_TCGRULPOSMREST_STR-ATAWE sy-vline 
WA_TCGRULPOSMREST_STR-ATFLB sy-vline 
WA_TCGRULPOSMREST_STR-ATAW1 sy-vline 
WA_TCGRULPOSMREST_STR-ATCOD sy-vline 
WA_TCGRULPOSMREST_STR-ATTLV sy-vline 
WA_TCGRULPOSMREST_STR-ATTLB sy-vline 
WA_TCGRULPOSMREST_STR-ATPRZ sy-vline 
WA_TCGRULPOSMREST_STR-ATINC sy-vline 
WA_TCGRULPOSMREST_STR-ATAUT sy-vline 
WA_TCGRULPOSMREST_STR-STATU sy-vline 
WA_TCGRULPOSMREST_STR-ATFOR sy-vline 
WA_TCGRULPOSMREST_STR-SLWRT sy-vline 
WA_TCGRULPOSMREST_STR-SLFLV sy-vline 
WA_TCGRULPOSMREST_STR-SLFLB sy-vline 
WA_TCGRULPOSMREST_STR-SLCOD sy-vline 
WA_TCGRULPOSMREST_STR-ATTAB sy-vline 
WA_TCGRULPOSMREST_STR-ATFEL sy-vline 
WA_TCGRULPOSMREST_STR-KZRED sy-vline 
WA_TCGRULPOSMREST_STR-OMADD sy-vline 
WA_TCGRULPOSMREST_STR-MMERB sy-vline 
WA_TCGRULPOSMREST_STR-ATEIN sy-vline 
WA_TCGRULPOSMREST_STR-AENNR sy-vline 
WA_TCGRULPOSMREST_STR-DATUV sy-vline 
WA_TCGRULPOSMREST_STR-CATWRT sy-vline 
WA_TCGRULPOSMREST_STR-CATFLV sy-vline 
WA_TCGRULPOSMREST_STR-ATIMB sy-vline 
WA_TCGRULPOSMREST_STR-ATZIS sy-vline 
WA_TCGRULPOSMREST_STR-ATSRT sy-vline 
WA_TCGRULPOSMREST_STR-ATVGLART sy-vline 
WA_TCGRULPOSMREST_STR-ADZHL sy-vline 
WA_TCGRULPOSMREST_STR-EST_ATWRT sy-vline      INTO ld_text SEPARATED BY SPACE.

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