ABAP Select data from SAP table DPAYCHKH into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM DPAYCHKH
*  INTO TABLE @DATA(IT_DPAYCHKH2).
*--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_DPAYCHKH INDEX 1 INTO DATA(WA_DPAYCHKH2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<DPAYCHKH>-MANDT = 1.
<DPAYCHKH>-BUKRS = 1.
<DPAYCHKH>-LAUFD = 1.
<DPAYCHKH>-LAUFI = 1.
<DPAYCHKH>-HBKID = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_DPAYCHKH-HKTID, sy-vline,
  WA_DPAYCHKH-RZAWE, sy-vline,
  WA_DPAYCHKH-DLFNR, sy-vline,
  WA_DPAYCHKH-ERDAT, sy-vline,
  WA_DPAYCHKH-ERTIM, sy-vline,
  WA_DPAYCHKH-ERNAM, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_DPAYCHKH 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_DPAYCHKH 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_DPAYCHKH INTO WA_DPAYCHKH.


*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 ALPHA, internal->external for field ZTNUMSTART
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_DPAYCHKH-ZTNUMSTART
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_DPAYCHKH-ZTNUMSTART.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field ZTNUMENDE
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_DPAYCHKH-ZTNUMENDE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_DPAYCHKH-ZTNUMENDE.
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_DPAYCHKH_STR, 
MANDT TYPE STRING,
BUKRS TYPE STRING,
LAUFD TYPE STRING,
LAUFI TYPE STRING,
HBKID TYPE STRING,
HKTID TYPE STRING,
RZAWE TYPE STRING,
DLFNR TYPE STRING,
ERDAT TYPE STRING,
ERTIM TYPE STRING,
ERNAM TYPE STRING,
ASDAT TYPE STRING,
ASTIM TYPE STRING,
ASNAM TYPE STRING,
STATUS TYPE STRING,
ANZFO TYPE STRING,
ZTNUMSTART TYPE STRING,
ZTNUMENDE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_DPAYCHKH_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_DPAYCHKH_STR-MANDT sy-vline 
WA_DPAYCHKH_STR-BUKRS sy-vline 
WA_DPAYCHKH_STR-LAUFD sy-vline 
WA_DPAYCHKH_STR-LAUFI sy-vline 
WA_DPAYCHKH_STR-HBKID sy-vline 
WA_DPAYCHKH_STR-HKTID sy-vline 
WA_DPAYCHKH_STR-RZAWE sy-vline 
WA_DPAYCHKH_STR-DLFNR sy-vline 
WA_DPAYCHKH_STR-ERDAT sy-vline 
WA_DPAYCHKH_STR-ERTIM sy-vline 
WA_DPAYCHKH_STR-ERNAM sy-vline 
WA_DPAYCHKH_STR-ASDAT sy-vline 
WA_DPAYCHKH_STR-ASTIM sy-vline 
WA_DPAYCHKH_STR-ASNAM sy-vline 
WA_DPAYCHKH_STR-STATUS sy-vline 
WA_DPAYCHKH_STR-ANZFO sy-vline 
WA_DPAYCHKH_STR-ZTNUMSTART sy-vline 
WA_DPAYCHKH_STR-ZTNUMENDE sy-vline      INTO ld_text SEPARATED BY SPACE.

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