ABAP Select data from SAP table PC23T into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP PC23T 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 PC23T. 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 PC23T 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_PC23T TYPE STANDARD TABLE OF PC23T,
      WA_PC23T TYPE PC23T,
      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: <PC23T> TYPE PC23T.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_PC23T.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM PC23T
  INTO TABLE IT_PC23T.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PC23T
*  INTO TABLE @DATA(IT_PC23T2).
*--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_PC23T INDEX 1 INTO DATA(WA_PC23T2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_PC23T ASSIGNING <PC23T>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PC23T>-NRINT = 1.
<PC23T>-PRIORITE = 1.
<PC23T>-NUMOF = 1.
<PC23T>-MNTSA = 1.
<PC23T>-NBPER = 1.

ENDLOOP.

LOOP AT IT_PC23T INTO WA_PC23T.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PC23T-MLIND, sy-vline,
  WA_PC23T-MLTX1, sy-vline,
  WA_PC23T-MLTX2, sy-vline,
  WA_PC23T-MLTX3, sy-vline,
  WA_PC23T-ZLSCH, sy-vline,
  WA_PC23T-EMFTX, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PC23T 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_PC23T 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_PC23T INTO WA_PC23T.


*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_PC23T_STR, 
NRINT TYPE STRING,
PRIORITE TYPE STRING,
NUMOF TYPE STRING,
MNTSA TYPE STRING,
NBPER TYPE STRING,
MLIND TYPE STRING,
MLTX1 TYPE STRING,
MLTX2 TYPE STRING,
MLTX3 TYPE STRING,
ZLSCH TYPE STRING,
EMFTX TYPE STRING,
BANKS TYPE STRING,
BANKL TYPE STRING,
BANKN TYPE STRING,
BKONT TYPE STRING,
WAERS TYPE STRING,
HSNMR TYPE STRING,
STRAS TYPE STRING,
LOCAT TYPE STRING,
LAND1 TYPE STRING,
PSTLZ TYPE STRING,
ORT01 TYPE STRING,
STRNR TYPE STRING,
IBAN TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PC23T_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_PC23T_STR-NRINT sy-vline 
WA_PC23T_STR-PRIORITE sy-vline 
WA_PC23T_STR-NUMOF sy-vline 
WA_PC23T_STR-MNTSA sy-vline 
WA_PC23T_STR-NBPER sy-vline 
WA_PC23T_STR-MLIND sy-vline 
WA_PC23T_STR-MLTX1 sy-vline 
WA_PC23T_STR-MLTX2 sy-vline 
WA_PC23T_STR-MLTX3 sy-vline 
WA_PC23T_STR-ZLSCH sy-vline 
WA_PC23T_STR-EMFTX sy-vline 
WA_PC23T_STR-BANKS sy-vline 
WA_PC23T_STR-BANKL sy-vline 
WA_PC23T_STR-BANKN sy-vline 
WA_PC23T_STR-BKONT sy-vline 
WA_PC23T_STR-WAERS sy-vline 
WA_PC23T_STR-HSNMR sy-vline 
WA_PC23T_STR-STRAS sy-vline 
WA_PC23T_STR-LOCAT sy-vline 
WA_PC23T_STR-LAND1 sy-vline 
WA_PC23T_STR-PSTLZ sy-vline 
WA_PC23T_STR-ORT01 sy-vline 
WA_PC23T_STR-STRNR sy-vline 
WA_PC23T_STR-IBAN sy-vline      INTO ld_text SEPARATED BY SPACE.

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