ABAP Select data from SAP table PC26D into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP PC26D 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 PC26D. 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 PC26D 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_PC26D TYPE STANDARD TABLE OF PC26D,
      WA_PC26D TYPE PC26D,
      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: <PC26D> TYPE PC26D.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_PC26D.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM PC26D
  INTO TABLE IT_PC26D.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PC26D
*  INTO TABLE @DATA(IT_PC26D2).
*--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_PC26D INDEX 1 INTO DATA(WA_PC26D2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_PC26D ASSIGNING <PC26D>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PC26D>-IDENT81 = 1.
<PC26D>-ANNEE82 = 1.
<PC26D>-NDRDE83 = 1.
<PC26D>-NBRDRE84 = 1.
<PC26D>-NRDRA85 = 1.

ENDLOOP.

LOOP AT IT_PC26D INTO WA_PC26D.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PC26D-NATTVA86, sy-vline,
  WA_PC26D-CENT87, sy-vline,
  WA_PC26D-DIV88, sy-vline,
  WA_PC26D-DIV89, sy-vline,
  WA_PC26D-NBREC810, sy-vline,
  WA_PC26D-CTOT811, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PC26D 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_PC26D 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_PC26D INTO WA_PC26D.


*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 GJAHR, internal->external for field ANNEE82
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_PC26D-ANNEE82
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PC26D-ANNEE82.
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_PC26D_STR, 
IDENT81 TYPE STRING,
ANNEE82 TYPE STRING,
NDRDE83 TYPE STRING,
NBRDRE84 TYPE STRING,
NRDRA85 TYPE STRING,
NATTVA86 TYPE STRING,
CENT87 TYPE STRING,
DIV88 TYPE STRING,
DIV89 TYPE STRING,
NBREC810 TYPE STRING,
CTOT811 TYPE STRING,
CTOT812 TYPE STRING,
CTOT812S TYPE STRING,
TPREC813 TYPE STRING,
TPREC813S TYPE STRING,
BTNUMB TYPE STRING,
BTNUM TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PC26D_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_PC26D_STR-IDENT81 sy-vline 
WA_PC26D_STR-ANNEE82 sy-vline 
WA_PC26D_STR-NDRDE83 sy-vline 
WA_PC26D_STR-NBRDRE84 sy-vline 
WA_PC26D_STR-NRDRA85 sy-vline 
WA_PC26D_STR-NATTVA86 sy-vline 
WA_PC26D_STR-CENT87 sy-vline 
WA_PC26D_STR-DIV88 sy-vline 
WA_PC26D_STR-DIV89 sy-vline 
WA_PC26D_STR-NBREC810 sy-vline 
WA_PC26D_STR-CTOT811 sy-vline 
WA_PC26D_STR-CTOT812 sy-vline 
WA_PC26D_STR-CTOT812S sy-vline 
WA_PC26D_STR-TPREC813 sy-vline 
WA_PC26D_STR-TPREC813S sy-vline 
WA_PC26D_STR-BTNUMB sy-vline 
WA_PC26D_STR-BTNUM sy-vline      INTO ld_text SEPARATED BY SPACE.

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