ABAP Select data from SAP table WB2_PAPER_POS_MGMT into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP WB2_PAPER_POS_MGMT 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 WB2_PAPER_POS_MGMT. 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 WB2_PAPER_POS_MGMT 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_WB2_PAPER_POS_MGMT TYPE STANDARD TABLE OF WB2_PAPER_POS_MGMT,
      WA_WB2_PAPER_POS_MGMT TYPE WB2_PAPER_POS_MGMT,
      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: <WB2_PAPER_POS_MGMT> TYPE WB2_PAPER_POS_MGMT.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_WB2_PAPER_POS_MGMT.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM WB2_PAPER_POS_MGMT
  INTO TABLE IT_WB2_PAPER_POS_MGMT.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM WB2_PAPER_POS_MGMT
*  INTO TABLE @DATA(IT_WB2_PAPER_POS_MGMT2).
*--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_WB2_PAPER_POS_MGMT INDEX 1 INTO DATA(WA_WB2_PAPER_POS_MGMT2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_WB2_PAPER_POS_MGMT ASSIGNING <WB2_PAPER_POS_MGMT>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<WB2_PAPER_POS_MGMT>-BUKRS = 1.
<WB2_PAPER_POS_MGMT>-RFHA = 1.
<WB2_PAPER_POS_MGMT>-CRUSER = 1.
<WB2_PAPER_POS_MGMT>-DCRDAT = 1.
<WB2_PAPER_POS_MGMT>-TCRTIM = 1.

ENDLOOP.

LOOP AT IT_WB2_PAPER_POS_MGMT INTO WA_WB2_PAPER_POS_MGMT.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_WB2_PAPER_POS_MGMT-UPUSER, sy-vline,
  WA_WB2_PAPER_POS_MGMT-DUPDAT, sy-vline,
  WA_WB2_PAPER_POS_MGMT-TUPTIM, sy-vline,
  WA_WB2_PAPER_POS_MGMT-RANTYP, sy-vline,
  WA_WB2_PAPER_POS_MGMT-SANLF, sy-vline,
  WA_WB2_PAPER_POS_MGMT-SFGTYP, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_WB2_PAPER_POS_MGMT 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_WB2_PAPER_POS_MGMT 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_WB2_PAPER_POS_MGMT INTO WA_WB2_PAPER_POS_MGMT.


*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 RFHA
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_WB2_PAPER_POS_MGMT-RFHA
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WB2_PAPER_POS_MGMT-RFHA.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field RGATT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_WB2_PAPER_POS_MGMT-RGATT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WB2_PAPER_POS_MGMT-RGATT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field KONTRH
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_WB2_PAPER_POS_MGMT-KONTRH
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WB2_PAPER_POS_MGMT-KONTRH.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field VRFHA
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_WB2_PAPER_POS_MGMT-VRFHA
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WB2_PAPER_POS_MGMT-VRFHA.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field RANL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_WB2_PAPER_POS_MGMT-RANL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WB2_PAPER_POS_MGMT-RANL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field FACILITYNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_WB2_PAPER_POS_MGMT-FACILITYNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WB2_PAPER_POS_MGMT-FACILITYNR.
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_WB2_PAPER_POS_MGMT_STR, 
BUKRS TYPE STRING,
RFHA TYPE STRING,
CRUSER TYPE STRING,
DCRDAT TYPE STRING,
TCRTIM TYPE STRING,
UPUSER TYPE STRING,
DUPDAT TYPE STRING,
TUPTIM TYPE STRING,
RANTYP TYPE STRING,
SANLF TYPE STRING,
SFGTYP TYPE STRING,
SGSART TYPE STRING,
SFHAART TYPE STRING,
RGATT TYPE STRING,
KONTRH TYPE STRING,
RREFKONT TYPE STRING,
RREFKONT2 TYPE STRING,
SROLEXT TYPE STRING,
RPORTB TYPE STRING,
WGSCHFT TYPE STRING,
WGSCHFT1 TYPE STRING,
WGSCHFT2 TYPE STRING,
DBLFZ TYPE STRING,
SKALID TYPE STRING,
SKALID2 TYPE STRING,
OBJNR TYPE STRING,
RLDEPO TYPE STRING,
ZUONR TYPE STRING,
DELFZ TYPE STRING,
ABWTYP TYPE STRING,
TBEGRU TYPE STRING,
VRFHA TYPE STRING,
ZUOND TYPE STRING,
REFER TYPE STRING,
MERKM TYPE STRING,
SFRGZUST TYPE STRING,
RANL TYPE STRING,
RCOMVALCL TYPE STRING,
FACILITYNR TYPE STRING,
FACILITYBUKRS TYPE STRING,
POSACC TYPE STRING,END OF T_EKKO_STR.
DATA: WA_WB2_PAPER_POS_MGMT_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_WB2_PAPER_POS_MGMT_STR-BUKRS sy-vline 
WA_WB2_PAPER_POS_MGMT_STR-RFHA sy-vline 
WA_WB2_PAPER_POS_MGMT_STR-CRUSER sy-vline 
WA_WB2_PAPER_POS_MGMT_STR-DCRDAT sy-vline 
WA_WB2_PAPER_POS_MGMT_STR-TCRTIM sy-vline 
WA_WB2_PAPER_POS_MGMT_STR-UPUSER sy-vline 
WA_WB2_PAPER_POS_MGMT_STR-DUPDAT sy-vline 
WA_WB2_PAPER_POS_MGMT_STR-TUPTIM sy-vline 
WA_WB2_PAPER_POS_MGMT_STR-RANTYP sy-vline 
WA_WB2_PAPER_POS_MGMT_STR-SANLF sy-vline 
WA_WB2_PAPER_POS_MGMT_STR-SFGTYP sy-vline 
WA_WB2_PAPER_POS_MGMT_STR-SGSART sy-vline 
WA_WB2_PAPER_POS_MGMT_STR-SFHAART sy-vline 
WA_WB2_PAPER_POS_MGMT_STR-RGATT sy-vline 
WA_WB2_PAPER_POS_MGMT_STR-KONTRH sy-vline 
WA_WB2_PAPER_POS_MGMT_STR-RREFKONT sy-vline 
WA_WB2_PAPER_POS_MGMT_STR-RREFKONT2 sy-vline 
WA_WB2_PAPER_POS_MGMT_STR-SROLEXT sy-vline 
WA_WB2_PAPER_POS_MGMT_STR-RPORTB sy-vline 
WA_WB2_PAPER_POS_MGMT_STR-WGSCHFT sy-vline 
WA_WB2_PAPER_POS_MGMT_STR-WGSCHFT1 sy-vline 
WA_WB2_PAPER_POS_MGMT_STR-WGSCHFT2 sy-vline 
WA_WB2_PAPER_POS_MGMT_STR-DBLFZ sy-vline 
WA_WB2_PAPER_POS_MGMT_STR-SKALID sy-vline 
WA_WB2_PAPER_POS_MGMT_STR-SKALID2 sy-vline 
WA_WB2_PAPER_POS_MGMT_STR-OBJNR sy-vline 
WA_WB2_PAPER_POS_MGMT_STR-RLDEPO sy-vline 
WA_WB2_PAPER_POS_MGMT_STR-ZUONR sy-vline 
WA_WB2_PAPER_POS_MGMT_STR-DELFZ sy-vline 
WA_WB2_PAPER_POS_MGMT_STR-ABWTYP sy-vline 
WA_WB2_PAPER_POS_MGMT_STR-TBEGRU sy-vline 
WA_WB2_PAPER_POS_MGMT_STR-VRFHA sy-vline 
WA_WB2_PAPER_POS_MGMT_STR-ZUOND sy-vline 
WA_WB2_PAPER_POS_MGMT_STR-REFER sy-vline 
WA_WB2_PAPER_POS_MGMT_STR-MERKM sy-vline 
WA_WB2_PAPER_POS_MGMT_STR-SFRGZUST sy-vline 
WA_WB2_PAPER_POS_MGMT_STR-RANL sy-vline 
WA_WB2_PAPER_POS_MGMT_STR-RCOMVALCL sy-vline 
WA_WB2_PAPER_POS_MGMT_STR-FACILITYNR sy-vline 
WA_WB2_PAPER_POS_MGMT_STR-FACILITYBUKRS sy-vline 
WA_WB2_PAPER_POS_MGMT_STR-POSACC sy-vline      INTO ld_text SEPARATED BY SPACE.

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