ABAP Select data from SAP table PC2PB into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP PC2PB 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 PC2PB. 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 PC2PB 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_PC2PB TYPE STANDARD TABLE OF PC2PB,
      WA_PC2PB TYPE PC2PB,
      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: <PC2PB> TYPE PC2PB.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_PC2PB.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM PC2PB
  INTO TABLE IT_PC2PB.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PC2PB
*  INTO TABLE @DATA(IT_PC2PB2).
*--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_PC2PB INDEX 1 INTO DATA(WA_PC2PB2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_PC2PB ASSIGNING <PC2PB>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PC2PB>-CNTR2 = 1.
<PC2PB>-BEGDA = 1.
<PC2PB>-ENDDA = 1.
<PC2PB>-FINUM = 1.
<PC2PB>-CODRF = 1.

ENDLOOP.

LOOP AT IT_PC2PB INTO WA_PC2PB.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PC2PB-INCAT, sy-vline,
  WA_PC2PB-MSTAT, sy-vline,
  WA_PC2PB-WSPSE, sy-vline,
  WA_PC2PB-HSPSE, sy-vline,
  WA_PC2PB-NRDEP, sy-vline,
  WA_PC2PB-NDEPH, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PC2PB 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_PC2PB 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_PC2PB INTO WA_PC2PB.


*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_PC2PB_STR, 
CNTR2 TYPE STRING,
BEGDA TYPE STRING,
ENDDA TYPE STRING,
FINUM TYPE STRING,
CODRF TYPE STRING,
INCAT TYPE STRING,
MSTAT TYPE STRING,
WSPSE TYPE STRING,
HSPSE TYPE STRING,
NRDEP TYPE STRING,
NDEPH TYPE STRING,
SVRAT TYPE STRING,
RESID TYPE STRING,
SBVAT TYPE STRING,
REDRT TYPE STRING,
FNAME TYPE STRING,
CONGL TYPE STRING,
DICOD TYPE STRING,
REPPY TYPE STRING,
JUPER TYPE STRING,
FLD1 TYPE STRING,
FLD2 TYPE STRING,
FLD3 TYPE STRING,
FLD4 TYPE STRING,
FLD5 TYPE STRING,
LIBEX TYPE STRING,
LIBRT TYPE STRING,
EMIGR TYPE STRING,
NROCP TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PC2PB_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_PC2PB_STR-CNTR2 sy-vline 
WA_PC2PB_STR-BEGDA sy-vline 
WA_PC2PB_STR-ENDDA sy-vline 
WA_PC2PB_STR-FINUM sy-vline 
WA_PC2PB_STR-CODRF sy-vline 
WA_PC2PB_STR-INCAT sy-vline 
WA_PC2PB_STR-MSTAT sy-vline 
WA_PC2PB_STR-WSPSE sy-vline 
WA_PC2PB_STR-HSPSE sy-vline 
WA_PC2PB_STR-NRDEP sy-vline 
WA_PC2PB_STR-NDEPH sy-vline 
WA_PC2PB_STR-SVRAT sy-vline 
WA_PC2PB_STR-RESID sy-vline 
WA_PC2PB_STR-SBVAT sy-vline 
WA_PC2PB_STR-REDRT sy-vline 
WA_PC2PB_STR-FNAME sy-vline 
WA_PC2PB_STR-CONGL sy-vline 
WA_PC2PB_STR-DICOD sy-vline 
WA_PC2PB_STR-REPPY sy-vline 
WA_PC2PB_STR-JUPER sy-vline 
WA_PC2PB_STR-FLD1 sy-vline 
WA_PC2PB_STR-FLD2 sy-vline 
WA_PC2PB_STR-FLD3 sy-vline 
WA_PC2PB_STR-FLD4 sy-vline 
WA_PC2PB_STR-FLD5 sy-vline 
WA_PC2PB_STR-LIBEX sy-vline 
WA_PC2PB_STR-LIBRT sy-vline 
WA_PC2PB_STR-EMIGR sy-vline 
WA_PC2PB_STR-NROCP sy-vline      INTO ld_text SEPARATED BY SPACE.

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