ABAP Select data from SAP table PC26A into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP PC26A 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 PC26A. 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 PC26A 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_PC26A TYPE STANDARD TABLE OF PC26A,
      WA_PC26A TYPE PC26A,
      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: <PC26A> TYPE PC26A.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_PC26A.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM PC26A
  INTO TABLE IT_PC26A.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PC26A
*  INTO TABLE @DATA(IT_PC26A2).
*--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_PC26A INDEX 1 INTO DATA(WA_PC26A2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_PC26A ASSIGNING <PC26A>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PC26A>-IDENT01 = 1.
<PC26A>-ANNEE02 = 1.
<PC26A>-DIV03 = 1.
<PC26A>-DIV04 = 1.
<PC26A>-DIV05 = 1.

ENDLOOP.

LOOP AT IT_PC26A INTO WA_PC26A.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PC26A-DIV06, sy-vline,
  WA_PC26A-DIV07, sy-vline,
  WA_PC26A-DIV08, sy-vline,
  WA_PC26A-DIV09, sy-vline,
  WA_PC26A-APP010, sy-vline,
  WA_PC26A-CRE011, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PC26A 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_PC26A 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_PC26A INTO WA_PC26A.


*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 ANNEE02
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_PC26A-ANNEE02
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PC26A-ANNEE02.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ISOLA, internal->external for field SPR022
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_PC26A-SPR022
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PC26A-SPR022.
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_PC26A_STR, 
IDENT01 TYPE STRING,
ANNEE02 TYPE STRING,
DIV03 TYPE STRING,
DIV04 TYPE STRING,
DIV05 TYPE STRING,
DIV06 TYPE STRING,
DIV07 TYPE STRING,
DIV08 TYPE STRING,
DIV09 TYPE STRING,
APP010 TYPE STRING,
CRE011 TYPE STRING,
SEQ012 TYPE STRING,
SEC013 TYPE STRING,
NOM014 TYPE STRING,
ADR015 TYPE STRING,
CPT016 TYPE STRING,
LOC017 TYPE STRING,
TEL018 TYPE STRING,
FAX019 TYPE STRING,
SUP020 TYPE STRING,
PER021 TYPE STRING,
SPR022 TYPE STRING,
EML023 TYPE STRING,
CID024 TYPE STRING,
BSNAN TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PC26A_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_PC26A_STR-IDENT01 sy-vline 
WA_PC26A_STR-ANNEE02 sy-vline 
WA_PC26A_STR-DIV03 sy-vline 
WA_PC26A_STR-DIV04 sy-vline 
WA_PC26A_STR-DIV05 sy-vline 
WA_PC26A_STR-DIV06 sy-vline 
WA_PC26A_STR-DIV07 sy-vline 
WA_PC26A_STR-DIV08 sy-vline 
WA_PC26A_STR-DIV09 sy-vline 
WA_PC26A_STR-APP010 sy-vline 
WA_PC26A_STR-CRE011 sy-vline 
WA_PC26A_STR-SEQ012 sy-vline 
WA_PC26A_STR-SEC013 sy-vline 
WA_PC26A_STR-NOM014 sy-vline 
WA_PC26A_STR-ADR015 sy-vline 
WA_PC26A_STR-CPT016 sy-vline 
WA_PC26A_STR-LOC017 sy-vline 
WA_PC26A_STR-TEL018 sy-vline 
WA_PC26A_STR-FAX019 sy-vline 
WA_PC26A_STR-SUP020 sy-vline 
WA_PC26A_STR-PER021 sy-vline 
WA_PC26A_STR-SPR022 sy-vline 
WA_PC26A_STR-EML023 sy-vline 
WA_PC26A_STR-CID024 sy-vline 
WA_PC26A_STR-BSNAN sy-vline      INTO ld_text SEPARATED BY SPACE.

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