ABAP Select data from SAP table PC26Z into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP PC26Z 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 PC26Z. 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 PC26Z 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_PC26Z TYPE STANDARD TABLE OF PC26Z,
      WA_PC26Z TYPE PC26Z,
      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: <PC26Z> TYPE PC26Z.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_PC26Z.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM PC26Z
  INTO TABLE IT_PC26Z.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PC26Z
*  INTO TABLE @DATA(IT_PC26Z2).
*--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_PC26Z INDEX 1 INTO DATA(WA_PC26Z2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_PC26Z ASSIGNING <PC26Z>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PC26Z>-ABKRS = 1.
<PC26Z>-PERMO = 1.
<PC26Z>-DATMO = 1.
<PC26Z>-JUPER = 1.
<PC26Z>-PAPER_PABRJ = 1.

ENDLOOP.

LOOP AT IT_PC26Z INTO WA_PC26Z.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PC26Z-PAPER_PABRP, sy-vline,
  WA_PC26Z-BEGDA, sy-vline,
  WA_PC26Z-ENDDA, sy-vline,
  WA_PC26Z-PBEGD, sy-vline,
  WA_PC26Z-PENDD, sy-vline,
  WA_PC26Z-CALCD, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PC26Z 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_PC26Z 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_PC26Z INTO WA_PC26Z.


*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 PAPER_PABRJ
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_PC26Z-PAPER_PABRJ
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PC26Z-PAPER_PABRJ.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field IAPER_PABRJ
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_PC26Z-IAPER_PABRJ
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PC26Z-IAPER_PABRJ.
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_PC26Z_STR, 
ABKRS TYPE STRING,
PERMO TYPE STRING,
DATMO TYPE STRING,
JUPER TYPE STRING,
PAPER_PABRJ TYPE STRING,
PAPER_PABRP TYPE STRING,
BEGDA TYPE STRING,
ENDDA TYPE STRING,
PBEGD TYPE STRING,
PENDD TYPE STRING,
CALCD TYPE STRING,
INPTY TYPE STRING,
INPID TYPE STRING,
INOCR TYPE STRING,
INOCC TYPE STRING,
IABKR TYPE STRING,
IAPER_PABRJ TYPE STRING,
IAPER_PABRP TYPE STRING,
IBEGD TYPE STRING,
IENDD TYPE STRING,
PAYTY TYPE STRING,
PAYID TYPE STRING,
OCRSN TYPE STRING,
OCCAT TYPE STRING,
BONDT TYPE STRING,
CHKDT TYPE STRING,
RRDAT TYPE STRING,
SEQNR TYPE STRING,
WAERS TYPE STRING,
OUTOFSEQ TYPE STRING,
OOSDATE TYPE STRING,
BRACKET TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PC26Z_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_PC26Z_STR-ABKRS sy-vline 
WA_PC26Z_STR-PERMO sy-vline 
WA_PC26Z_STR-DATMO sy-vline 
WA_PC26Z_STR-JUPER sy-vline 
WA_PC26Z_STR-PAPER_PABRJ sy-vline 
WA_PC26Z_STR-PAPER_PABRP sy-vline 
WA_PC26Z_STR-BEGDA sy-vline 
WA_PC26Z_STR-ENDDA sy-vline 
WA_PC26Z_STR-PBEGD sy-vline 
WA_PC26Z_STR-PENDD sy-vline 
WA_PC26Z_STR-CALCD sy-vline 
WA_PC26Z_STR-INPTY sy-vline 
WA_PC26Z_STR-INPID sy-vline 
WA_PC26Z_STR-INOCR sy-vline 
WA_PC26Z_STR-INOCC sy-vline 
WA_PC26Z_STR-IABKR sy-vline 
WA_PC26Z_STR-IAPER_PABRJ sy-vline 
WA_PC26Z_STR-IAPER_PABRP sy-vline 
WA_PC26Z_STR-IBEGD sy-vline 
WA_PC26Z_STR-IENDD sy-vline 
WA_PC26Z_STR-PAYTY sy-vline 
WA_PC26Z_STR-PAYID sy-vline 
WA_PC26Z_STR-OCRSN sy-vline 
WA_PC26Z_STR-OCCAT sy-vline 
WA_PC26Z_STR-BONDT sy-vline 
WA_PC26Z_STR-CHKDT sy-vline 
WA_PC26Z_STR-RRDAT sy-vline 
WA_PC26Z_STR-SEQNR sy-vline 
WA_PC26Z_STR-WAERS sy-vline 
WA_PC26Z_STR-OUTOFSEQ sy-vline 
WA_PC26Z_STR-OOSDATE sy-vline 
WA_PC26Z_STR-BRACKET sy-vline      INTO ld_text SEPARATED BY SPACE.

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